University of California Cooperative Extension – September...
Transcript of University of California Cooperative Extension – September...
University of California Cooperative Extension – September, 2010 (S.D. Wright, et al) 1
COTTON HARVEST AID Acala and Pima
Preliminary Research Progress Report 2009
Cotton Inc. and Cotton Alliance
Advisors and Specialists – University of
California Cooperative Extension:
Steve Wright, UCCE Farm Advisor, Tulare and
Kings Co.
Bob Hutmacher, Cotton Specialist, UC Davis
Plant Sciences Dept., West Side REC
Dan Munk, UCCE Farm Advisor, Fresno Co.
Staff Research Associates:
Lalo Banuelos, UCCE Tulare/Kings County
Mark Keeley, UC Davis Plant Science Dept.
Jon Wroble, UCCE Fresno County
Laboratory Assistants
Sara Avila, Tulare/Kings County
Agricultural Technicians:
Matt Mills, Tulare County
Craig Yancy, Tulare County
Tony Garcia, Kings County
UC West Side Research and
Extension Center:
Ed Scott
Merf Solorio
University of California Cooperative Extension – September, 2010 (S.D. Wright, et al) 2
2009 Cotton Harvest Aid Research Summary
This report summarizes the applied defoliation research studies conducted during 2009. All projects were
conducted at the West Side Research and Extension Center. Five studies were conducted on Acala cotton.
Although it is one of the last management decisions in the cotton production cycle, defoliation timing and
application are critical to producing a profitable crop. Improper timing will compromise both seed cotton yield and
quality. In light of the premium and discounts for fiber quality brought about by High Volume Instrumentation (HVI),
proper choice and timing of harvest aid chemicals are of paramount importance. Ideally, the proper harvest aid materials
should defoliate the entire plant within 14 days after application with minimal desiccation. However, plant maturity,
moisture status, nitrogen status, and environmental conditions dictate this response.
The objective of these studies was to define the most appropriate conditions for ideal defoliation and crop
termination. In addition, it is necessary to evaluate alternative, as well as new materials, to current defoliation programs
in a manner to insure optimum performance and minimum impact on fiber quality.
ACKNOWLEDGMENTS
We gratefully acknowledge the assistance and support provided by the West Side Research and Extension Center
in supplying land, labor, and equipment to conduct these studies.
Support to conduct these studies was provided by Cotton Incorporated
Arysta LifeScience Bayer Crop Science
FBScience FMC
Syngenta Nichino America
HARVEST AIDS TESTED IN THESE STUDIES
Brand Name Common Chemical Name/Formulation Company
Adios 1.5 EC Thiduazuron & Diuron Arysta LifeScience
Agridex Crop Oil Concentrate Helena
CottonQuik 2.25 lb/G Ethephon Dupont
Def 6 6 lb/G Tribufos Bayer
Defol 7 6 lb/G Sodium Chlorate Monterey
ET Herbicide/Defoliant 0.2 EC Pyraflufen-ethyl Nichino
Finish 6 6.75 lb/G Ethephon & Cyclanilide Bayer
Ginstar 1.5 EC Thiduazuron & Diuron Bayer
Gramoxone Inteon Paraquat Syngenta
Induce Nonionic Surfactants Helena
Kafe FBScience
Prep 6 lb/G Ethephon Bayer
Shark Carfentrazone-ethyl FMC
University of California Cooperative Extension – September, 2010 (S.D. Wright, et al) 3
Cotton Harvest Aid Management 2009 Trial 1 - In previous years Ginstar treatments at 4-6oz rate applied at the 4 nodes above cracked boll followed by a
secondary treatment of 6-8 oz of Ginstar gave 20 percent higher defoliation, no difference in desiccation, and 10 percent
improved open boll compared to similar treatments with a two shot approach applied at the standard 6 NACB stage. In
2009, 4 NACB treatments had improved defoliation, open boll, and desiccation, with slight significant differences in the
yield. Though 6 NACB has potential for late fields to bring about an earlier harvest, 4 NACB produced a more desirable
outcome.
Trial 2 – In the 2-Step Approach in Acala cotton, application timings made significant differences in defoliation,
desiccation, and open boll. Applying treatments at 15% OB followed by 70% OB produced less desirable results
compared to treatments applied at 15% OB followed by 50% OB followed by 70% OB and 50% OB followed by 70% OB
which gave two times better results.
Trial 3 – Similiarities and differences were observed when comparing Ginstar + Finish herbicides versus Adios + Prep
herbicides in Acala cotton. Treatments consisting of Ginstar + Finish produced higher percents compared to Adios + Prep
treatments, 21 DAT in defoliation and desiccation. Both herbicide mixtures gave similar percentages in open boll.
Trial 4 – The defoliation screening study in Acala cotton showed which herbicides applied at certain rates produced the
best results. In defoliation, ET 2 floz + Ginstar 6 floz +CottonQuik 3 pts + Agridex 1 pt followed by ET 2.75 floz +
Gramaxone Inteon 16 floz + Induce 1 pt gave the best 21 DAT. In desiccation, Shark 0.5 floz + Ginstar 6 floz +
CottonQuik 3 pts + Agridex 1 pt followed by Shark 1 floz + Gramaxone Inteon 18 floz + Induce 1 pt gave best results 21
DAT. And in open boll, Ginstar 6 oz + Prep 2 pt + Agridex 1 pt followed by Defol 7 1.6 qts + Gramaxone Inteon 16 floz
+ Induce 1 pt produced highest results 21 DAT. Overall treatment 12 performed extremely well in defoliation,
desiccation, and open boll.
Trial 5 – The defoliation study was conducted to observe the differences between the combinations of Kafe with Adios +
Prep and Kafe with Ginstar + Finish. Identical results were produced 8, 14, and 21 DAT with the two treatments in
defoliation, desiccation, and open boll when applied at the same timings. No differences were observed.
Defoliation Studies in Acala Cotton (photos 2009)
University of California Cooperative Extension – September, 2010 (S.D. Wright, et al) 4
Acala Defoliation (Pre-Treatment Approach) UCCE--WSREC—2009
Steve Wright, Bob Hutmacher, Lalo Banuelos, Dan Munk,
Jon Wrobles, Mark Keeley, Matt Mills, Craig Yancy, Tony Garcia,
Sara Jo Avila, Ed Scott, Merf Solorio, WSREC Staff
The trial was conducted at the Westside Research Center in Five Points. This field was planted with Roundup
Ready Flex Phytogen 725RF on April 20, 2009 with seed rate of 18 lbs/A. The field was irrigated three times using
pressure bomb readings of 18-20 bars to better manage plant vigor. In addition, the field received 16 ounces of Pix Ultra
on July 2, 15 ounces of Pix Ultra on July 22. The plot size was 4-40” rows x 65’, 4 replications, with a volume of 15 gpa,
pressure of 40 psi, speed of 3.5 mph and 8002 flat fan nozzles.
The first application was applied on September 10, 2009, using a High Clearance Spider sprayer when the cotton
was at 6 nodes above cracked boll (NACB), with temperature of 87oF and wind factor of 0-1 mph. The second
application was applied on September 15, 2009, using a High Clearance Spider when the cotton was at 4NACB, with
temperature of 81oF and wind factor of 2-4 mph. The third application was applied on September 22, 2009, using a High
Clearance Spider, with temperature of 84oF and wind factor of 0-1 mph. The last application was applied on September
24, 2009, using a High Clearance Spider with temperature of 94°F with wind factor of 0-2 mph. Defoliation, desiccation,
and open boll percentages were visually recorded at 7, 14, and 21 days after treatment (DAT).
At 7 DAT, all treatments displayed various defoliation percentages, averaging approximately 30 percent.
Treatment 1 (Ginstar 4 oz + Agridex 1 pt followed by Ginstar 6 oz + Finish 20 oz + Agridex 1 pt) exhibited the lowest
average defoliation percent, 11 percent, and treatment 8 (Ginstar 4 oz + Finish 12 oz + Agridex 1 pt followed by Ginstar 6
oz + Finish 20 oz + Agridex 1 pt) exhibited the highest, 50 percent (Table 1). Desiccation averaged approximately 10
percent. Treatment 1 (Ginstar 4 oz + Agridex 1 pt followed by Ginstar 6 oz + Finish 20 oz + Agridex 1 pt) exhibited the
lowest, 3 percent, and treatment 8 (Ginstar 4 oz + Finish 12 oz + Agridex 1 pt followed by Ginstar 6 oz + Finish 20 oz +
Agridex 1 pt) exhibited the highest, 18 percent (Table 2). Open boll averaged approximately 65 percent and treatment 8
(Ginstar 4 oz + Finish 12 oz + Agridex 1 pt followed by Ginstar 6 oz + Finish 20 oz + Agridex 1 pt) showed the highest
with 76 percent (Table 3).
At 14 DAT, all treatments showed a range of defoliation percentages, with treatment 9 (Ginstar 6 oz + Finish 12
oz + Agridex 1 pt followed by Ginstar 6 oz + Finish 20 oz + Agridex 1 pt) being the highest, 69 percent, and treatment 1
(Ginstar 4 oz + Agridex 1 pt followed by Ginstar 6 oz + Finish 20 oz + Agridex 1 pt) being the lowest at 21 percent (Table
1). Desiccation was still fairly low for most treatments, but treatment 9 (Ginstar 6 oz + Finish 12 oz + Agridex 1 pt
followed by Ginstar 6 oz + Finish 20 oz + Agridex 1 pt) had the highest rating, 48 percent and treatments 1 (Ginstar 4 oz
+ Agridex 1 pt followed by Ginstar 6 oz + Finish 20 oz + Agridex 1 pt) and 2 (Ginstar 6 oz + Agridex 1 pt followed by
Ginstar 6 oz + Finish 20 oz + Agridex 1 pt) showing the lowest, 10 percent (Table 2). Open boll ratings were in the mid
70 to mid 80 percent range for most treatments with treatments 6 (Ginstar 4 oz + Agridex 1 pt followed by Ginstar 6 oz +
Finish 20 oz + Agridex 1 pt) and 9 (Ginstar 6 oz + Finish 12 oz + Agridex 1 pt followed by Ginstar 6 oz + Finish 20 oz +
Agridex 1 pt) at the highest, 84 percent, and treatments 1 (Ginstar 4 oz + Agridex 1 pt followed by Ginstar 6 oz + Finish
20 oz + Agridex 1 pt) and 5 (Ginstar 6 oz + Agridex 1 pt followed by Ginstar 8 oz + Finish 20 oz + Agridex 1 pt) at the
lowest, 75 percent (Table 3).
At 21 DAT, treatment 9 (Ginstar 6 oz + Finish 12 oz + Agridex 1 pt followed by Ginstar 6 oz + Finish 20 oz +
Agridex 1 pt) had the highest defoliation ratings at 95 percent, and treatment 1 (Ginstar 4 oz + Agridex 1 pt followed by
Ginstar 6 oz + Finish 20 oz + Agridex 1 pt) having the lowest ratings at 73 percent (Table 1). Treatment 10 (Ginstar 6 oz
+ Agridex 1 pt followed by Ginstar 8 oz + Finish 20 oz + Agridex 1 pt) also had the highest desiccation at 85 percent, and
treatment 7 (Ginstar 6 oz + Agridex 1 pt followed by Ginstar 6 oz + Finish 20 oz + Agridex 1 pt) having the lowest rating
at 35 percent (Table 2). Open boll ratings, with treatment 7 (Ginstar 6 oz + Agridex 1 pt followed by Ginstar 6 oz +
Finish 20 oz + Agridex 1 pt) showing the highest at 95 percent and treatment 2 (Ginstar 6 oz + Agridex 1 pt followed by
Ginstar 6 oz + Finish 20 oz + Agridex 1 pt) having the lowest at 87 percent (Table 3).
University of California Cooperative Extension – September, 2010 (S.D. Wright, et al) 5
Table 1.
Percent Defoliation
Treatments
Rate pr/A
Timing Sept. 24 Sept. 29 Oct. 6
9 DAT 14 DAT 21 DAT
1. Ginstar + Agridex
B. Ginstar + Finish + Agridex
4oz + 1pt
6oz + 20oz + 1pt
6NACB 11 21 73
2. Ginstar + Agridex
B. Ginstar + Finish + Agridex
6oz + 1pt
6oz + 20oz + 1pt
6NACB 15 31 76
3. Ginstar + Finish + Agridex
B. Ginstar + Finish + Agridex
4oz + 12oz + 1pt
6oz + 20oz + 1pt
6NACB 43 61 84
4. Ginstar + Finish + Agridex
B. Ginstar + Finish + Agridex
6oz + 12oz + 1pt
6oz + 20oz + 1pt
6NACB 43 68 81
5. Ginstar + Agridex
B. Ginstar + Finish + Agridex
6oz + 1pt
8oz + 20oz + 1pt
6NACB 15 48 76
9 DAT 14 DAT 21 DAT
6. Ginstar + Agridex
B. Ginstar + Finish + Agridex
4oz + 1pt
6oz + 20oz + 1pt
4NACB 24 66 90
7. Ginstar + Agridex
B. Ginstar + Finish + Agridex
6oz + 1pt
6oz + 20oz + 1pt
4NACB 28 60 86
8. Ginstar + Finish + Agridex
B. Ginstar + Finish + Agridex
4oz + 12oz + 1pt
6oz + 20oz + 1pt
4NACB 50 66 91
9. Ginstar + Finish + Agridex
B. Ginstar + Finish + Agridex
6oz + 12oz + 1pt
6oz + 20oz + 1pt
4NACB 46 69 95
10. Ginstar + Agridex
B. Ginstar + Finish + Agridex
6oz + 1pt
8oz + 20oz + 1pt
4NACB 25 54 90
11. Untreated --- --- 10 23 31
Table 2.
Percent Desiccation
Treatments
Rate pr/A
Timing
Sept. 24 Sept. 24 Oct. 1
9 DAT 14 DAT 21 DAT
1. Ginstar + Agridex
B. Ginstar + Finish + Agridex
4oz + 1pt
6oz + 20oz + 1pt
6NACB 3 10 53
2. Ginstar + Agridex
B. Ginstar + Finish + Agridex
6oz + 1pt
6oz + 20oz + 1pt
6NACB 7 10 53
3. Ginstar + Finish + Agridex
B. Ginstar + Finish + Agridex
4oz + 12oz + 1pt
6oz + 20oz + 1pt
6NACB 9 19 59
4. Ginstar + Finish + Agridex
B. Ginstar + Finish + Agridex
6oz + 12oz + 1pt
6oz + 20oz + 1pt
6NACB 11 16 60
5. Ginstar + Agridex
B. Ginstar + Finish + Agridex
6oz + 1pt
8oz + 20oz + 1pt
6NACB 5 13 53
9 DAT 14 DAT 21 DAT
6. Ginstar + Agridex
B. Ginstar + Finish + Agridex
4oz + 1pt
6oz + 20oz + 1pt
4NACB 10 40 69
7. Ginstar + Agridex
B. Ginstar + Finish + Agridex
6oz + 1pt
6oz + 20oz + 1pt
4NACB 14 33 35
8. Ginstar + Finish + Agridex
B. Ginstar + Finish + Agridex
4oz + 12oz + 1pt
6oz + 20oz + 1pt
4NACB 16 36 63
9. Ginstar + Finish + Agridex
B. Ginstar + Finish + Agridex
6oz + 12oz + 1pt
6oz + 20oz + 1pt
4NACB 18 48 63
10. Ginstar + Agridex
B. Ginstar + Finish + Agridex
6oz + 1pt
8oz + 20oz + 1pt
4NACB 10 33 85
11. Untreated --- --- 5 8 10
University of California Cooperative Extension – September, 2010 (S.D. Wright, et al) 6
Table 3.
Percent Open Boll
Treatments
Rate pr/A
Timing
Sept. 24 Sept. 24 Oct. 1
9 DAT 14 DAT 21 DAT
1. Ginstar + Agridex
B. Ginstar + Finish + Agridex
4oz + 1pt
6oz + 20oz + 1pt
6NACB 54 75 88
2. Ginstar + Agridex
B. Ginstar + Finish + Agridex
6oz + 1pt
6oz + 20oz + 1pt
6NACB 53 78 87
3. Ginstar + Finish + Agridex
B. Ginstar + Finish + Agridex
4oz + 12oz + 1pt
6oz + 20oz + 1pt
6NACB 60 78 90
4. Ginstar + Finish + Agridex
B. Ginstar + Finish + Agridex
6oz + 12oz + 1pt
6oz + 20oz + 1pt
6NACB 59 76 90
5. Ginstar + Agridex
B. Ginstar + Finish + Agridex
6oz + 1pt
8oz + 20oz + 1pt
6NACB 54 75 88
9 DAT 14 DAT 21 DAT
6. Ginstar + Agridex
B. Ginstar + Finish + Agridex
4oz + 1pt
6oz + 20oz + 1pt
4NACB 74 84 93
7. Ginstar + Agridex
B. Ginstar + Finish + Agridex
6oz + 1pt
6oz + 20oz + 1pt
4NACB 74 81 95
8. Ginstar + Finish + Agridex
B. Ginstar + Finish + Agridex
4oz + 12oz + 1pt
6oz + 20oz + 1pt
4NACB 76 83 93
9. Ginstar + Finish + Agridex
B. Ginstar + Finish + Agridex
6oz + 12oz + 1pt
6oz + 20oz + 1pt
4NACB 75 84 94
10. Ginstar + Agridex
B. Ginstar + Finish + Agridex
6oz + 1pt
8oz + 20oz + 1pt
4NACB 73 80 89
11. Untreated --- --- 71 78 89
Table 4.
Treatment Rate pr/A
Timing Lint %
Gin
T.O. %
Lint Yield
Lbs/A
1. Ginstar + Agridex
B. Ginstar + Finish + Agridex
4oz + 1pt
6oz + 20oz + 1pt
6NACB 36.9 32.7 1776
2. Ginstar + Agridex
B. Ginstar + Finish + Agridex
6oz + 1pt
6oz + 20oz + 1pt
6NACB 37.0 32.8 1813
3. Ginstar + Finish + Agridex
B. Ginstar + Finish + Agridex
4oz + 12oz + 1pt
6oz + 20oz + 1pt
6NACB 36.8 32.9 1807
4. Ginstar + Finish + Agridex
B. Ginstar + Finish + Agridex
6oz + 12oz + 1pt
6oz + 20oz + 1pt
6NACB 36.9 33.0 1756
5. Ginstar + Agridex
B. Ginstar + Finish + Agridex
6oz + 1pt
8oz + 20oz + 1pt
6NACB 36.6 32.6 1764
6. Ginstar + Agridex
B. Ginstar + Finish + Agridex
4oz + 1pt
6oz + 20oz + 1pt
4NACB 36.9 32.8 1848
7. Ginstar + Agridex
B. Ginstar + Finish + Agridex
6oz + 1pt
6oz + 20oz + 1pt
4NACB 37.1 33.3 1834
8. Ginstar + Finish + Agridex
B. Ginstar + Finish + Agridex
4oz + 12oz + 1pt
6oz + 20oz + 1pt
4NACB 37.0 32.8 1858
9. Ginstar + Finish + Agridex
B. Ginstar + Finish + Agridex
6oz + 12oz + 1pt
6oz + 20oz + 1pt
4NACB 36.8 32.6 1803
10. Ginstar + Agridex
B. Ginstar + Finish + Agridex
6oz + 1pt
8oz + 20oz + 1pt
4NACB 37.0 32.5 1798
11. Untreated --- --- 34.4 28.9 1665
University of California Cooperative Extension – September, 2010 (S.D. Wright, et al) 7
Acala Defoliation - Shark (2 Step-Approach) UCCE--WSREC—2009
Steve Wright, Bob Hutmacher, Lalo Banuelos, Dan Munk,
Jon Wrobles, Mark Keeley, Matt Mills, Craig Yancy, Tony Garcia,
Sara Jo Avila, Ed Scott, Merf Solorio, WSREC Staff
The trial was conducted at the Westside Research Center in Five Points. This field was planted with Roundup
Ready Flex Phytogen 725RF on April 20, 2009 with seed rate of 18 lbs/A. The field was irrigated three times using
pressure bomb readings of 18-20 bars to better manage plant vigor. In addition, the field received 16 ounces of Pix Ultra
on July 2, 15 ounces of Pix Ultra on July 22. The plot size was 4-40” rows x 70’, 4 replications, with a volume of 15 gpa,
pressure of 30 psi at first application, pressure of 40 psi at second and third application, speed of 3.6 mph, 8003 flat fan
nozzles at first application, and 8002 flat fan nozzles at second and third applications.
The first application was applied on September 4, 2009, using a John Deere 6100 with temperatures of 82oF and a
wind factor of 2-5 mph. The second application was disbursed on September 15, 2009, using a High Cycle Spider with an
exterior temperature of 71oF and a wind factor of 2-4 mph. The third and last application was applied on September 22,
2009, using a High Cycle Spider with temperature of 75°F with wind factor of 0-3 mph. Defoliation, desiccation, and
open boll percentages were visually recorded at 13, 18, and 27 days after treatment (DAT).
At 13 DAT, all treatments displayed average defoliation percentages, averaging approximately 2 percent.
Treatment 4 (Finish 12oz + Agridex 1 pt followed by Ginstar 6oz + Finish 12oz + Agridex 1 pt) exhibited the lowest
average defoliation percent, 0 percent, and treatments 1 (Shark 1floz + Agridex 1 pt followed by Ginstar 6oz + Finish
20oz + Agridex 1 pt), 2 (Shark 1floz + Agridex 1pt followed by Ginstar 6oz + Agridex 1pt followed by Ginstar 6oz +
Finish 20oz + 1pt), and 3 (Shark 1floz + Agridex 1pt followed by Ginstar 6 oz + Finish 12oz + Agridex 1pt followed by
Ginstar 6oz + Finish 20oz + Agridex 1pt) showed highest average defoliation percent, 2 percent. Desiccation averaged
approximately 4 percent. Treatment 4 (Finish 12oz + Agridex 1 pt followed by Ginstar 6oz + Finish 12oz + Agridex 1 pt)
exhibited the lowest at 0 percent, and treatment 2 (Shark 1floz + Agridex 1pt followed by Ginstar 6oz + Agridex 1pt
followed by Ginstar 6oz + Finish 20oz + 1pt) the highest, 6 percent (Table 2). Open boll averaged 52 percent. Treatment
2 (Shark 1floz + Agridex 1pt followed by Ginstar 6oz + Agridex 1pt followed by Ginstar 6oz + Finish 20oz + 1pt)
showing the highest with 54 percent (Table 3).
At 18 DAT, all treatments displayed average defoliation percentages, averaging approximately 25 percent.
Treatments 1 (Shark 1floz + Agridex 1 pt followed by Ginstar 6oz + Finish 20oz + Agridex 1 pt) and 4 (Finish 12oz +
Agridex 1 pt followed by Ginstar 6oz + Finish 12oz + Agridex 1 pt) exhibited the lowest average defoliation percents, 19
percent, and treatment 3 (Shark 1floz + Agridex 1pt followed by Ginstar 6 oz + Finish 12oz + Agridex 1pt followed by
Ginstar 6oz + Finish 20oz + Agridex 1pt) the highest, 33 percent (Table 1). Desiccation averaged approximately 28
percent. Treatment 1 (Shark 1floz + Agridex 1 pt followed by Ginstar 6oz + Finish 20oz + Agridex 1 pt) exhibited the
lowest, 13 percent, and treatment 3 (Shark 1floz + Agridex 1pt followed by Ginstar 6 oz + Finish 12oz + Agridex 1pt
followed by Ginstar 6oz + Finish 20oz + Agridex 1pt) the highest, 39 percent (Table 2). Open boll averaged
approximately 73 percent. Treatment 3 (Shark 1floz + Agridex 1pt followed by Ginstar 6 oz + Finish 12oz + Agridex 1pt
followed by Ginstar 6oz + Finish 20oz + Agridex 1pt) showing the highest with 78 percent (Table 3).
At 27 DAT, all treatments displayed average defoliation percentages, averaging approximately 73 percent.
Treatment 1 (Shark 1floz + Agridex 1 pt followed by Ginstar 6oz + Finish 20oz + Agridex 1 pt) exhibited the lowest
average defoliation percent, 49 percent, and treatment 2 (Shark 1floz + Agridex 1pt followed by Ginstar 6oz + Agridex
1pt followed by Ginstar 6oz + Finish 20oz + 1pt) and treatment 3 (Shark 1floz + Agridex 1pt followed by Ginstar 6 oz +
Finish 12oz + Agridex 1pt followed by Ginstar 6oz + Finish 20oz + Agridex 1pt) the highest, 83 percent (Table 1).
Desiccation averaged approximately 49 percent. Treatment 1 (Shark 1floz + Agridex 1 pt followed by Ginstar 6oz +
Finish 20oz + Agridex 1 pt) exhibited the lowest, 29 percent, and treatment 2 (Shark 1floz + Agridex 1pt followed by
Ginstar 6oz + Agridex 1pt followed by Ginstar 6oz + Finish 20oz + 1pt) the highest, 64 percent (Table 2). Open boll
averaged approximately 89 percent and treatment 2 (Shark 1floz + Agridex 1pt followed by Ginstar 6oz + Agridex 1pt
followed by Ginstar 6oz + Finish 20oz + 1pt) showing the highest with 91 percent (Table 3).
University of California Cooperative Extension – September, 2010 (S.D. Wright, et al) 8
Table 1.
Percent Defoliation
Treatment Rate /A Timing
Sept. 17 Sept. 22 Oct. 1
13 DAT 18 DAT 27 DAT
1. Shark + Agridex
B. Ginstar + Finish + Agridex
1floz +1pt
6oz + 20oz + 1pt
8 NACB
4 NACB
15% OB
70% OB 2 19 49
2. Shark + Agridex
B. Ginstar + Agridex
C. Ginstar + Finish + Agridex
1floz + 1pt
6oz + 1pt
6oz + 20oz + 1 pt
8 NACB
6 NACB
4 NACB
15% OB
50% OB
70% OB
2 30 83
3. Shark + Agridex
B. Ginstar + Finish + Agridex
C. Ginstar + Finish + Agridex
1 floz + 1pt
6oz + 12 oz + 1pt
6 oz + 20oz + 1 pt
8 NACB
6 NACB
4 NACB
15% OB
50% OB
70% OB
2 33 83
4. Finish + Agridex
B. Ginstar + Finish + Agridex
12oz + 1pt
6oz + 12oz + 1pt
6 NACB
4 NACB
50% OB
70% OB 0 19 76
5. Untreated --- --- 0 15 20
Table 2.
Percent Dessication
Treatment Rate /A Timing
Sept. 17 Sept. 22 Oct. 1
13 DAT 18 DAT 27 DAT
1. Shark + Agridex
B. Ginstar + Finish + Agridex
1floz +1pt
6oz + 20oz + 1pt
8 NACB
4 NACB
15% OB
70% OB 5 13 29
2. Shark + Agridex
B. Ginstar + Agridex
C. Ginstar + Finish + Agridex
1floz + 1pt
6oz + 1pt
6oz + 20oz + 1 pt
8 NACB
6 NACB
4 NACB
15% OB
50% OB
70% OB
6 38 64
3. Shark + Agridex
B. Ginstar + Finish + Agridex
C. Ginstar + Finish + Agridex
1 floz + 1pt
6oz + 12 oz + 1pt
6 oz + 20oz + 1 pt
8 NACB
6 NACB
4 NACB
15% OB
50% OB
70% OB
5 39 56
4. Finish + Agridex
B. Ginstar + Finish + Agridex
12oz + 1pt
6oz + 12oz + 1pt
6 NACB
4 NACB
50% OB
70% OB 0 23 46
5. Untreated --- --- 0 2 9
Table 3.
Open Boll
Treatment Rate /A Timing
Sept. 17 Sept. 22 Oct. 1
13 DAT 18 DAT 27 DAT
1. Shark + Agridex
B. Ginstar + Finish + Agridex
1floz +1pt
6oz + 20oz + 1pt
8 NACB
4 NACB
15% OB
70% OB 53 61 83
2. Shark + Agridex
B. Ginstar + Agridex
C. Ginstar + Finish + Agridex
1floz + 1pt
6oz + 1pt
6oz + 20oz + 1 pt
8 NACB
6 NACB
4 NACB
15% OB
50% OB
70% OB
54 75 91
3. Shark + Agridex
B. Ginstar + Finish + Agridex
C. Ginstar + Finish + Agridex
1 floz + 1pt
6oz + 12 oz + 1pt
6 oz + 20oz + 1 pt
8 NACB
6 NACB
4 NACB
15% OB
50% OB
70% OB
53 78 90
4. Finish + Agridex
B. Ginstar + Finish + Agridex
12oz + 1pt
6oz + 12oz + 1pt
6 NACB
4 NACB
50% OB
70% OB 48 76 90
5. Untreated --- --- 48 59 76
University of California Cooperative Extension – September, 2010 (S.D. Wright, et al) 9
Table 4.
Treatment Rate /A Timing Lint %
Gin
T.O. %
Lint
Yield
1. Shark + Agridex
B. Ginstar + Finish + Agridex
1floz +1pt
6oz + 20oz + 1pt
8 NACB
4 NACB
15% OB
70% OB 37.1 32.6 1922
2. Shark + Agridex
B. Ginstar + Agridex
C. Ginstar + Finish + Agridex
1floz + 1pt
6oz + 1pt
6oz + 20oz + 1 pt
8 NACB
6 NACB
4 NACB
15% OB
50% OB
70% OB
37.5 33.4 1898
3. Shark + Agridex
B. Ginstar + Finish + Agridex
C. Ginstar + Finish + Agridex
1 floz + 1pt
6oz + 12 oz + 1pt
6 oz + 20oz + 1 pt
8 NACB
6 NACB
4 NACB
15% OB
50% OB
70% OB
37.1 32.9 1880
4. Finish + Agridex
B. Ginstar + Finish + Agridex
12oz + 1pt
6oz + 12oz + 1pt
6 NACB
4 NACB
50% OB
70% OB 37.2 32.7 1927
5. Untreated --- --- 34.8 29.6 1833
University of California Cooperative Extension – September, 2010 (S.D. Wright, et al) 10
Acala Defoliation 3 – Ginstar vs Adios UCCE--WSREC—2009
Steve Wright, Bob Hutmacher, Lalo Banuelos, Dan Munk,
Jon Wrobles, Mark Keeley, Matt Mills, Craig Yancy, Tony Garcia,
Sara Jo Avila, Ed Scott, Merf Solorio, WSREC Staff
The trial was conducted at the Westside Research Center in Five Points. This field was planted with Roundup
Ready Flex Phytogen 725RF on April 20, 2009 with seed rate of 18 lbs/A. The field was irrigated three times using
pressure bomb readings of 18-20 bars to better manage plant vigor. In addition, the field received 16 ounces of Pix Ultra
on July 2, 15 ounces of Pix Ultra on July 22. The plot size was 4-40” rows x 65’, 3 replications, with a volume of 15 gpa,
pressure of 40 psi, speed of 4 mph and 8002 flat fan nozzles.
The first application was applied on September 15, using a High Clearance Spider with temperature of 73oF and
wind factor of 3-5 mph. The last application was applied on September 24, 2009, using a High Clearance Spider with
temperature of 89°F with wind factor of 0-2 mph. Defoliation, desiccation, and open boll percentages were visually
recorded at 7, 14, and 21days after treatment (DAT).
At 7 DAT, all treatments displayed average defoliation percentages, averaging approximately 27 percent.
Treatment 12 (Adios 6oz + Prep 2pt + Agridex 1pt followed by Defol 7 1.6qt + ET 2.75oz + Agridex 1pt) exhibited the
lowest average defoliation percent, 18 percent, and treatments 3 (Ginstar 6oz + Finish 20oz + Agridex 1 pt followed by
ET 2.75oz + Agridex 1 pt) and 5 (Ginstar 6oz + Finish 20 oz + Agridex 1pt followed by Defol 7 1.6qt + ET 2.75oz +
Agridex 1pt) the highest, 38 percent (Table 1). Desiccation averaged approximately 23 percent. Treatment 10 (Adios 6oz
+ Prep 2pt + Agridex 1pt followed by ET 2.75oz + Agridex 1pt) exhibited the lowest, 12 percent, and treatments 3
(Ginstar 6oz + Finish 20oz + Agridex 1 pt followed by ET 2.75oz + Agridex 1 pt) and 4 (Ginstar 6oz + Finish 20oz +
Agridex 1 pt followed by Shark 1.6oz + Agridex 1 pt) the highest, 37 percent (Table 2). Open boll averaged
approximately 89 percent and treatment 1 (Ginstar 6oz + Finish 20 oz + Agridex 1pt followed by Defol 7 1.6qt +
Gramoxone Inteon 16oz + Induce 1pt) showing the highest with 93 percent (Table 3).
At 14 DAT, all treatments displayed average defoliation percentages, averaging approximately 56 percent.
Treatment 13 (Adios 6oz + Prep 2pt + Agridex 1pt followed by Defol 7 1.6qt + Shark 1.6oz + Agridex 1pt) exhibited the
lowest average defoliation percent, 38 percent, and treatments 2 (Ginstar 6 oz + Finish 20 oz + Agridex 1 pt followed by
Gramoxone Inteon 16oz + Agridex 1pt), 3 (Ginstar 6oz + Finish 20oz + Agridex 1 pt followed by ET 2.75oz + Agridex 1
pt), 5 (Ginstar 6oz + Finish 20 oz + Agridex 1pt followed by Defol 7 1.6qt + ET 2.75oz + Agridex 1pt), and 6 (Ginstar
6oz + Finish 20 oz + Agridex 1pt followed by Defol 7 1.6qt + Shark 1.6oz + Agridex 1pt) the highest, 68 percent (Table
1). Desiccation averaged approximately 36 percent. Treatment 13 (Adios 6oz + Prep 2pt + Agridex 1pt followed by
Defol 7 1.6qt + Shark 1.6oz + Agridex 1pt) exhibited the lowest, 17 percent, and treatment 6 (Ginstar 6oz + Finish 20 oz
+ Agridex 1pt followed by Defol 7 1.6qt + Shark 1.6oz + Agridex 1pt) the highest, 55 percent (Table 2). Open boll
averaged approximately 94 percent with treatments 1 (Ginstar 6oz + Finish 20 oz + Agridex 1pt followed by Defol 7 1.6qt
+ Gramoxone Inteon 16oz + Induce 1pt) showing the highest with 98 percent (Table 3).
At 21 DAT, all treatments displayed average defoliation percentages, averaging approximately 80 percent.
Treatment 13 (Adios 6oz + Prep 2pt + Agridex 1pt followed by Defol 7 1.6qt + Shark 1.6oz + Agridex 1pt) exhibited the
lowest average defoliation percent, 60 percent, and treatment 4 (Ginstar 6oz + Finish 20oz + Agridex 1 pt followed by
Shark 1.6oz + Agridex 1 pt) and treatment 6 (Ginstar 6oz + Finish 20 oz + Agridex 1pt followed by Defol 7 1.6qt + Shark
1.6oz + Agridex 1pt) having the highest, 92 percent (Table 1). Desiccation averaged approximately 27 percent.
Treatment 11 (Adios 6oz + Prep 2pt + Agridex 1pt followed by Shark 1.6oz + Agridex 1pt) exhibited the lowest, 10
percent, and treatment 7 (Ginstar 6oz + Finish 20oz + Agridex 1pt followed by Ginstar 8 oz + Agridex 1pt) the highest, 62
percent (Table 2). Open boll averaged approximately 96 percent with treatments 1 (Ginstar 6oz + Finish 20 oz + Agridex
1pt followed by Defol 7 1.6qt + Gramoxone Inteon 16oz + Induce 1pt), 2 (Ginstar 6 oz + Finish 20 oz + Agridex 1 pt
followed by Gramoxone Inteon 16oz + Agridex 1pt), 3 (Ginstar 6oz + Finish 20oz + Agridex 1 pt followed by ET 2.75oz
+ Agridex 1 pt), and 4 (Ginstar 6oz + Finish 20oz + Agridex 1 pt followed by Shark 1.6oz + Agridex 1 pt) showing the
highest with 98 percent (Table 3).
University of California Cooperative Extension – September, 2010 (S.D. Wright, et al) 11
Table 1.
Percent Defoliation
Treatments Rate/A
Sept. 22 Sept. 29 Oct. 6
7 DAT 14 DAT 21 DAT
1. Ginstar + Finish + Agridex
B. Defol 7 + Gramoxone Inteon + Induce
6oz + 20oz + 1pt
1.6qt + 16 oz + 1pt 32 55 82
2. Ginstar + Finish + Agridex
B. Gramoxone Inteon + Induce
6oz + 20oz + 1pt
16oz + 1.6pt 32 68 90
3. Ginstar + Finish + Agridex
B. ET + Agridex
6oz + 20oz + 1pt
2.75oz + 1pt 38 68 88
4. Ginstar + Finish + Agridex
B. Shark + Agridex
6oz + 20oz + 1pt
1.6oz + 1pt 32 62 92
5. Ginstar + Finish + Agridex
B. Defol 7 + ET + Agridex
6oz + 20oz + 1pt
1.6qt + 2.75oz + 1pt 38 68 88
6. Ginstar + Finish + Agridex
B. Defol 7 + Shark + Agridex
6oz + 20oz + 1pt
1.6qt + 1.6oz + 1pt 30 68 92
7. Ginstar + Finish + Agridex
B. Ginstar + Agridex
6oz + 20oz + 1pt
8oz + 1pt 32 65 90
8. Adios + Prep + Agridex
B. Defol 7 + Gramoxone Inteon + Induce
6oz + 2pt + 1pt
1.6qt + 16oz + 1.6pt 22 53 67
9. Adios + Prep + Agridex
B. Gramoxone Inteon + Induce
6oz + 2pt + 1pt
16oz + 1.6pt 20 48 68
10. Adios + Prep + Agridex
B. ET + Agridex
6oz + 2pt + 1pt
2.75floz + 1pt 25 50 70
11. Adios + Prep + Agridex
B. Shark + Agridex
6oz + 2pt + 1pt
1.6oz + 1pt 22 45 68
12. Adios + Prep + Agridex
B. Defol 7 + ET + Agridex
6oz + 2pt + 1pt
1.6qt + 2.75oz + 1pt 18 42 83
13. Adios + Prep + Agridex
B. Defol 7 + Shark + Agridex
6oz + 2pt + 1pt
1.6qt + 1.6oz + 1pt 22 38 60
14. Adios + Prep + Agridex
B. Adios + Agridex
6oz + 2pt + 1pt
8oz + 1pt 27 53 78
15. Untreated ----- 15 23 45
University of California Cooperative Extension – September, 2010 (S.D. Wright, et al) 12
Table 2.
Percent Desiccation
Treatments Rate/A
Sept. 22 Sept. 29 Oct. 6
7 DAT 14 DAT 21 DAT
1. Ginstar + Finish + Agridex
B. Defol 7 + Gramoxone Inteon + Induce
6oz + 20oz + 1pt
1.6qt + 16 oz + 1pt 33 43 32
2. Ginstar + Finish + Agridex
B. Gramoxone Inteon + Induce
6oz + 20oz + 1pt
16oz + 1.6pt 28 52 38
3. Ginstar + Finish + Agridex
B. ET + Agridex
6oz + 20oz + 1pt
2.75oz + 1pt 37 47 35
4. Ginstar + Finish + Agridex
B. Shark + Agridex
6oz + 20oz + 1pt
1.6oz + 1pt 37 50 22
5. Ginstar + Finish + Agridex
B. Defol 7 + ET + Agridex
6oz + 20oz + 1pt
1.6qt + 2.75oz + 1pt 30 50 52
6. Ginstar + Finish + Agridex
B. Defol 7 + Shark + Agridex
6oz + 20oz + 1pt
1.6qt + 1.6oz + 1pt 23 55 20
7. Ginstar + Finish + Agridex
B. Ginstar + Agridex
6oz + 20oz + 1pt
8oz + 1pt 32 47 62
8. Adios + Prep + Agridex
B. Defol 7 + Gramoxone Inteon + Induce
6oz + 2pt + 1pt
1.6qt + 16oz + 1.6pt 13 22 12
9. Adios + Prep + Agridex
B. Gramoxone Inteon + Induce
6oz + 2pt + 1pt
16oz + 1.6pt 18 25 20
10. Adios + Prep + Agridex
B. ET + Agridex
6oz + 2pt + 1pt
2.75floz + 1pt 12 30 17
11. Adios + Prep + Agridex
B. Shark + Agridex
6oz + 2pt + 1pt
1.6oz + 1pt 13 20 10
12. Adios + Prep + Agridex
B. Defol 7 + ET + Agridex
6oz + 2pt + 1pt
1.6qt + 2.75oz + 1pt 17 25 18
13. Adios + Prep + Agridex
B. Defol 7 + Shark + Agridex
6oz + 2pt + 1pt
1.6qt + 1.6oz + 1pt 13 17 13
14. Adios + Prep + Agridex
B. Adios + Agridex
6oz + 2pt + 1pt
8oz + 1pt 17 20 18
15. Untreated ----- 3 5 8
University of California Cooperative Extension – September, 2010 (S.D. Wright, et al) 13
Table 3.
Percent Open Boll
Treatments Rate/A
Sept. 22 Sept. 29 Oct. 6
7 DAT 14 DAT 21 DAT
1. Ginstar + Finish + Agridex
B. Defol 7 + Gramoxone Inteon + Induce
6oz + 20oz + 1pt
1.6qt + 16 oz + 1pt 93 98 98
2. Ginstar + Finish + Agridex
B. Gramoxone Inteon + Induce
6oz + 20oz + 1pt
16oz + 1.6pt 92 97 98
3. Ginstar + Finish + Agridex
B. ET + Agridex
6oz + 20oz + 1pt
2.75oz + 1pt 92 97 98
4. Ginstar + Finish + Agridex
B. Shark + Agridex
6oz + 20oz + 1pt
1.6oz + 1pt 92 96 98
5. Ginstar + Finish + Agridex
B. Defol 7 + ET + Agridex
6oz + 20oz + 1pt
1.6qt + 2.75oz + 1pt 90 95 96
6. Ginstar + Finish + Agridex
B. Defol 7 + Shark + Agridex
6oz + 20oz + 1pt
1.6qt + 1.6oz + 1pt 88 97 97
7. Ginstar + Finish + Agridex
B. Ginstar + Agridex
6oz + 20oz + 1pt
8oz + 1pt 90 95 96
8. Adios + Prep + Agridex
B. Defol 7 + Gramoxone Inteon + Induce
6oz + 2pt + 1pt
1.6qt + 16oz + 1.6pt 87 92 94
9. Adios + Prep + Agridex
B. Gramoxone Inteon + Induce
6oz + 2pt + 1pt
16oz + 1.6pt 85 92 92
10. Adios + Prep + Agridex
B. ET + Agridex
6oz + 2pt + 1pt
2.75floz + 1pt 85 93 95
11. Adios + Prep + Agridex
B. Shark + Agridex
6oz + 2pt + 1pt
1.6oz + 1pt 85 92 93
12. Adios + Prep + Agridex
B. Defol 7 + ET + Agridex
6oz + 2pt + 1pt
1.6qt + 2.75oz + 1pt 88 95 95
13. Adios + Prep + Agridex
B. Defol 7 + Shark + Agridex
6oz + 2pt + 1pt
1.6qt + 1.6oz + 1pt 87 92 95
14. Adios + Prep + Agridex
B. Adios + Agridex
6oz + 2pt + 1pt
8oz + 1pt 85 92 96
15. Untreated ----- 83 88 94
University of California Cooperative Extension – September, 2010 (S.D. Wright, et al) 14
Defoliation Screening Study in Acala Cotton - 4 UCCE - WSREC - 2009
Steve Wright, Bob Hutmacher, Lalo Banuelos, Dan Munk,
Jon Wrobles, Mark Keeley, Matt Mills, Craig Yancy, Tony Garcia,
Sara Jo Avila, Ed Scott, Merf Solorio, WSREC Staff
The trial was conducted at the Westside Research Center in Five Points. This field was planted with Roundup
Ready Flex Phytogen 725RF on April 20, 2009 with seed rate of 18 lbs/A. The field was irrigated three times using
pressure bomb readings of 18-20 bars to better manage plant vigor. In addition, the field received 16 ounces of Pix Ultra
on July 2, 15 ounces of Pix Ultra on July 22. The plot size was 4-40” rows x 65’, 4 replications, with a volume of 15 gpa,
pressure of 40 psi, speed of 4 mph and 8002 flat fan nozzles.
The first application was applied on September 15, 2009, using a High Clearance Spider when the cotton was at
60% open boll, with temperature of 84oF and wind factor of 2-4 mph. The second application was applied on September
24, 2009, using a High Clearance Spider when the cotton was at 80% open boll, with temperature of 89°F with wind
factor of 0-2 mph. Defoliation, desiccation, and open boll percentages were visually recorded at 7, 14, and 21 days after
treatment (DAT).
At 7 DAT, all treatments which were sprayed at 60% OB displayed average defoliation percentages of 43 percent
(Table 1). On the treatment 9 (Shark 2.75floz + Ginstar 8oz + Agridex 1pt) showed percentages of 55 at 7 DAT.
Desiccation averaged approximately 37 percent on all treatments sprayed at 60% OB (Table 2). On treatment 11 (Def 2pt
+ CottonQuik 3pt + Agridex 1pt) the percentages showed 55. Open boll averaged approximately 81 percent on all
treatments at 60% OB. On treatment 8 (Shark 0.5 + Ginstar 6 floz + CottonQuik 3pt + Agridex 1pt) it showed a 85
percent open boll (Table 3).
At 14 DAT, all treatments sprayed with one application at 60 % OB and a second application at 80% OB
displayed average defoliation percentages, averaging approximately 62 percent (Table 1). Treatment 3 (Ginstar 6floz +
CottonQuik 3pt + Agridex 1pt followed by Gramoxone Inteon 16floz + Defol 7 1.6qt + Induce 1pt) and treatment 6 (Prep
2pt + Def 2pt + Gramoxone Inteon 8oz + Induce 1.6pt followed by Defol 7 1.6qt + Gramoxone Inteon 16oz + Induce 1.6
pt) exhibited the lowest average defoliation percent, 53 percent, and treatment 4 (ET 2.75floz + Ginstar 8oz + Agridex 1pt
followed by ET 2.75floz + Gramoxone Inteon 16floz + Induce 1.6pt) exhibited the highest, 68 percent. Desiccation
averaged approximately 49 percent. Treatment 6 (Prep 2pt + Def 2pt + Gramoxone Inteon 8oz + Induce 1.6pt followed
by Defol 7 1.6qt + Gramoxone Inteon 16oz + Induce 1.6 pt) exhibited the lowest, 32 percent, and treatment 4 (ET 2.75floz
+ Ginstar 8oz + Agridex 1pt followed by ET 2.75floz + Gramoxone Inteon 16floz + Induce 1.6pt) the highest, 62 percent
(Table 2). Open boll averaged approximately 87 percent on all treatments and treatment 13 (Ginstar 6oz + Prep 2pt +
Agridex 1pt followed by Defol 7 1.6qt + Gramoxone Inteon 16oz + Induce 1pt) showing the highest with 91 percent
(Table 3).
At 21 DAT, treatment 6 (Prep 2pt + Def 2pt + Gramoxone Inteon 8oz + Induce 1.6pt followed by Defol 7 1.6qt +
Gramoxone Inteon 16oz + Induce 1.6 pt) exhibited the lowest average defoliation percent, 72 percent, and treatment 2 (
ET 2floz + Ginstar 6floz + CottonQuik 3pt + Agridex 1pt followed by ET 2.75floz + Gramoxone Inteon 16floz + Induce
1pt)the highest, 95 percent (Table 1). Desiccation averaged approximately 35 percent. Treatment 6 (Prep 2pt + Def 2pt +
Gramoxone Inteon 8oz + Induce 1.6pt followed by Defol 7 1.6qt + Gramoxone Inteon 16oz + Induce 1.6 pt) and treatment
10 ( Def 2pt + Prep 2pt + Agridex 1pt followed by Defol 71.6qt + Gramoxone Inteon 16oz + Induce 1pt) exhibited the
lowest, 15 percent, and treatment 8 ( Shark 0.5floz + Ginstar 6floz + CottonQuik 3pt + Agridex 1pt followed by Shark
1floz + Gramoxone Inteon 18floz + Induce 1pt) the highest, 53 percent (Table 2). Open boll averaged approximately 89
percent and treatment 13 (Ginstar 6oz + Prep 2pt + Agridex 1pt followed by Defol 7 1.6qt + Gramoxone Inteon 16oz +
Induce 1pt) showed the highest with 93 percent (Table 3).
University of California Cooperative Extension – September, 2010 (S.D. Wright, et al) 15
Table 1.
Percent Defoliation
Treatments Rate/A
Sept. 22 Sept. 29 Oct. 6
7 DAT 14 DAT 21 DAT
1. ET + Prep + Agridex
B. ET + Agridex
2floz + 2pt + 1pt
2floz + 1pt 45 60 80
2. ET + Ginstar + CottonQuik + Agridex
B. ET + Gramoxone Inteon + Induce
2floz + 6floz + 3pt + 1pt
2.75floz + 16floz + 1pt 42 63 95
3. Ginstar + CottonQuik + Agridex
B. Gramoxone + Defol 7 + Induce
6floz + 3pt + 1pt
16fl + 1.6qt + 1pt 37 53 85
4. ET + Ginstar + Agridex
B. ET + Gramoxone Inteon + Induce
2.75floz + 8oz + 1pt
2.75floz + 16floz + 1pt 42 68 90
5. Ginstar + Gramoxone Inteon + Induce
B. Defol 7 + Gramoxone Inteon + Induce
8floz + 5floz + 1.6pt
1.6qt + 16oz + 1.6pt 50 65 90
6. Prep + Def + Gramoxone Inteon + Induce
B. Defol 7 + Gramoxone Inteon + Induce
2pt + 2pt + 8oz + 1.6pt
1.6qt + 16oz + 1.6pt 40 53 72
7. Shark + Prep + Agridex
B. Shark + Agridex
0.5floz + 2pt + 1pt
1floz + 1pt 47 60 88
8. Shark + Ginstar + CottonQuik + Agridex
B. Shark + Gramoxone Inteon + Induce
0.5floz + 2pt + 1pt
1floz + 1pt 43 62 87
9. Shark + Ginstar + Agridex
B. Shark + Gramoxone Inteon + Induce
2.75floz + 8oz + 1pt
2.75floz + 16oz + 1.6pt 55 62 93
10. Def + Prep + Agridex
B. Defol 7 + Gramoxone Inteon + Induce
2pt + 2pt + 1pt
1.6qts + 16floz + 1pt 53 65 88
11. Def + CottonQuik + Agridex
B. Def + Gramoxone Inteon + Induce
2pt + 3pt + 1pt
1.6oz + 16oz + 1pt 45 63 90
12. Ginstar + Def + Agridex
B. Defol 7 + Gramoxone Inteon + Induce
6oz + 2pt + 1pt
1.6qt + 16oz + 1pt 47 67 93
13. Ginstar + Prep + Agridex
B. Defol 7 + Gramoxone Inteon + Induce
6oz + 2pt + 1pt
1.6qt + 16oz + 1pt 40 67 90
14. Untreated ----- 18 30 45
* 1st application sprayed on 15-Sept.
* 2nd application sprayed on 24-Sept.
University of California Cooperative Extension – September, 2010 (S.D. Wright, et al) 16
Table 2.
Percent Dessication
Treatments Rate/A
Sept. 22 Sept. 29 Oct. 6
7 DAT 14 DAT 21 DAT
1. ET + Prep + Agridex
B. ET + Agridex
2floz + 2pt + 1pt
2floz + 1pt 27 38 25
2. ET + Ginstar + CottonQuik + Agridex
B. ET + Gramoxone Inteon + Induce
2floz + 6floz + 3pt + 1pt
2.75floz + 16floz + 1pt 53 55 45
3. Ginstar + CottonQuik + Agridex
B. Gramoxone + Defol 7 + Induce
6floz + 3pt + 1pt
16fl + 1.6qt + 1pt 37 43 38
4. ET + Ginstar + Agridex
B. ET + Gramoxone Inteon + Induce
2.75floz + 8oz + 1pt
2.75floz + 16floz + 1pt 33 62 30
5. Ginstar + Gramoxone Inteon + Induce
B. Defol 7 + Gramoxone Inteon + Induce
8floz + 5floz + 1.6pt
1.6qt + 16oz + 1.6pt 33 48 40
6. Prep + Def + Gramoxone Inteon + Induce
B. Defol 7 + Gramoxone Inteon + Induce
2pt + 2pt + 8oz + 1.6pt
1.6qt + 16oz + 1.6pt 22 32 15
7. Shark + Prep + Agridex
B. Shark + Agridex
0.5floz + 2pt + 1pt
1floz + 1pt 40 45 27
8. Shark + Ginstar + CottonQuik + Agridex
B. Shark + Gramoxone Inteon + Induce
0.5floz + 2pt + 1pt
1floz + 1pt 35 52 53
9. Shark + Ginstar + Agridex
B. Shark + Gramoxone Inteon + Induce
2.75floz + 8oz + 1pt
2.75floz + 16oz + 1.6pt 47 60 50
10. Def + Prep + Agridex
B. Defol 7 + Gramoxone Inteon + Induce
2pt + 2pt + 1pt
1.6qts + 16floz + 1pt 23 45 15
11. Def + CottonQuik + Agridex
B. Def + Gramoxone Inteon + Induce
2pt + 3pt + 1pt
1.6oz + 16oz + 1pt 55 53 28
12. Ginstar + Def + Agridex
B. Defol 7 + Gramoxone Inteon + Induce
6oz + 2pt + 1pt
1.6qt + 16oz + 1pt 43 55 47
13. Ginstar + Prep + Agridex
B. Defol 7 + Gramoxone Inteon + Induce
6oz + 2pt + 1pt
1.6qt + 16oz + 1pt 43 53 42
14. Untreated ----- 0 20 13
* 1st application sprayed on 15-Sept.
* 2nd application sprayed on 24-Sept.
University of California Cooperative Extension – September, 2010 (S.D. Wright, et al) 17
Table 3.
Percent Open Boll
Treatments Rate/A
Sept. 22 Sept. 29 Oct. 6
7 DAT 14 DAT 21 DAT
1. ET + Prep + Agridex
B. ET + Agridex
2floz + 2pt + 1pt
2floz + 1pt 80 87 88
2. ET + Ginstar + CottonQuik + Agridex
B. ET + Gramoxone Inteon + Induce
2floz + 6floz + 3pt + 1pt
2.75floz + 16floz + 1pt 80 87 90
3. Ginstar + CottonQuik + Agridex
B. Gramoxone + Defol 7 + Induce
6floz + 3pt + 1pt
16fl + 1.6qt + 1pt 80 87 90
4. ET + Ginstar + Agridex
B. ET + Gramoxone Inteon + Induce
2.75floz + 8oz + 1pt
2.75floz + 16floz + 1pt 80 85 87
5. Ginstar + Gramoxone Inteon + Induce
B. Defol 7 + Gramoxone Inteon + Induce
8floz + 5floz + 1.6pt
1.6qt + 16oz + 1.6pt 82 87 88
6. Prep + Def + Gramoxone Inteon + Induce
B. Defol 7 + Gramoxone Inteon + Induce
2pt + 2pt + 8oz + 1.6pt
1.6qt + 16oz + 1.6pt 80 83 86
7. Shark + Prep + Agridex
B. Shark + Agridex
0.5floz + 2pt + 1pt
1floz + 1pt 82 88 90
8. Shark + Ginstar + CottonQuik + Agridex
B. Shark + Gramoxone Inteon + Induce
0.5floz + 2pt + 1pt
1floz + 1pt 85 87 88
9. Shark + Ginstar + Agridex
B. Shark + Gramoxone Inteon + Induce
2.75floz + 8oz + 1pt
2.75floz + 16oz + 1.6pt 80 83 85
10. Def + Prep + Agridex
B. Defol 7 + Gramoxone Inteon + Induce
2pt + 2pt + 1pt
1.6qts + 16floz + 1pt 83 87 91
11. Def + CottonQuik + Agridex
B. Def + Gramoxone Inteon + Induce
2pt + 3pt + 1pt
1.6oz + 16oz + 1pt 83 88 88
12. Ginstar + Def + Agridex
B. Defol 7 + Gramoxone Inteon + Induce
6oz + 2pt + 1pt
1.6qt + 16oz + 1pt 82 90 92
13. Ginstar + Prep + Agridex
B. Defol 7 + Gramoxone Inteon + Induce
6oz + 2pt + 1pt
1.6qt + 16oz + 1pt 83 91 93
14. Untreated ----- 75 82 83
* 1st application sprayed on 15-Sept.
* 2nd application sprayed on 24-Sept.
University of California Cooperative Extension – September, 2010 (S.D. Wright, et al) 18
Defoliation Study with Kafe in Acala Cotton - 5 UCCE - WSREC - 2009
Steve Wright, Bob Hutmacher, Lalo Banuelos, Dan Munk,
Jon Wrobles, Mark Keeley, Matt Mills, Craig Yancy, Tony Garcia,
Sara Jo Avila, Ed Scott, Merf Solorio, WSREC Staff
The trial was conducted at the Westside Research Center in Five Points. This field was planted with Roundup
Ready Flex Phytogen 725RF on April 20, 2009 with seed rate of 18 lbs/A. The field was irrigated three times using
pressure bomb readings of 18-20 bars to better manage plant vigor. In addition, the field received 16 ounces of Pix Ultra
on July 2, 15 ounces of Pix Ultra on July 22. The plot size was 4-40” rows x 70’, 4 replications, with a volume of 15 gpa,
pressure of 40 psi, speed of 3.5 mph and 8002 flat fan nozzles.
The first application was applied on September 28, 2009, using a High Cycle Spider when the cotton was at 60%
open boll, with temperature of 89oF and wind factor of 2-4 mph. The last application was applied on October 8, 2009,
using a High Cycle Spider with temperature of 49°F with wind factor of 4 mph. Defoliation, desiccation, and open boll
percentages were visually recorded at 8, 14, and 21days after treatment (DAT).
At 8 DAT, both treatments displayed average defoliation percentages, averaging approximately 37 percent.
Treatment 2 (Kafe 7floz + Adios 6floz + Prep 2pt + Agridex 1pt) exhibited the lower average defoliation percent, 36
percent, and treatment 1 (Kafe 7floz + Ginsatr 6 floz + Finish 12floz + Agridex 1 pt) the higher, 38 percent (Table 1).
Desiccation averaged approximately 14 percent. Treatment 2 (Kafe 7floz + Adios 6floz + Prep 2pt + Agridex 1pt)
exhibited the lower average dessication percent, 13 percent, and treatment 1 (Kafe 7floz + Ginsatr 6 floz + Finish 12floz +
Agridex 1 pt) the higher, 15 percent (Table 2). Open boll averaged approximately 84 percent with both treatments
producing 84 percent (Table 3).
At 14 DAT, all treatments displayed average defoliation percentages, averaging approximately 52 percent.
Treatment 2 (Kafe 7floz + Adios 6floz + Prep 2pt + Agridex 1pt followed by Defol 7 1.6qt + Gramoxone Inteon 1pt +
Induce 1 pt) exhibited the lower average defoliation percent, 48 percent, and treatment 1 (Kafe 7floz + Ginsatr 6 floz +
Finish 12floz + Agridex 1 pt followed by Defol 7 1.6qt + Gramoxone Inteon 1pt + Induce 1 pt) the higher, 54 percent
(Table 1). Desiccation averaged approximately 26 percent. Treatment 2 (Kafe 7floz + Adios 6floz + Prep 2pt + Agridex
1pt followed by Defol 7 1.6qt + Gramoxone Inteon 1pt + Induce 1 pt) exhibited the lower average dessication percent, 23
percent, and treatment 1 (Kafe 7floz + Ginsatr 6 floz + Finish 12floz + Agridex 1 pt followed by Defol 7 1.6qt +
Gramoxone Inteon 1pt + Induce 1 pt) the higher, 30 percent (Table 2). Open boll averaged approximately 90 percent with
treatment 1 (Kafe 7floz + Ginsatr 6 floz + Finish 12floz + Agridex 1 pt followed by Defol 7 1.6qt + Gramoxone Inteon
1pt + Induce 1 pt) producing the highest at 90 percent (Table 3).
At 21 DAT, all treatments displayed the same defoliation percentages at 73 percent (Table 1). Desiccation
averaged approximately 17 percent. Treatment 2 (Kafe 7floz + Adios 6floz + Prep 2pt + Agridex 1pt followed by Defol 7
1.6qt + Gramoxone Inteon 1pt + Induce 1 pt) exhibited the lower average dessication percent, 14 percent, and treatment 1
(Kafe 7floz + Ginsatr 6 floz + Finish 12floz + Agridex 1 pt followed by Defol 7 1.6qt + Gramoxone Inteon 1pt + Induce 1
pt) the higher, 20 percent (Table 2). Open boll averaged approximately 93 percent with treatment 1 (Kafe 7floz + Ginsatr
6 floz + Finish 12floz + Agridex 1 pt followed by Defol 7 1.6qt + Gramoxone Inteon 1pt + Induce 1 pt) showing the
highest with 94 percent (Table 3).
University of California Cooperative Extension – September, 2010 (S.D. Wright, et al) 19
Table 1.
Percent Defoliation
Treatments Rate/A Timing
Oct. 6 Oct. 12 Oct. 19
8 DAT 14 DAT 21 DAT
1. Kafe + Ginstar + Finish + Agridex
B. Defol 7 + Gramoxone Inteon + Induce
7floz + 6floz + 12floz + 1pt
1.6qt + 1pt + 1pt
5 NACB
3 NACB
60% OB
80% OB 38 54 73
2. Kafe + Adios + Prep + Agridex
B. Defol 7 + Gramoxone Inteon + Induce
7floz + 6floz + 2pt + 1pt
1.6qt + 1pt + 1pt 5 NACB
3 NACB
60% OB
80% OB 36 48 73
* 1st application sprayed on 28-Sept.
* 2nd application sprayed on 12-Oct.
Table 2.
Percent Dessication
Treatments Rate/A Timing
Oct. 6 Oct. 12 Oct. 19
8 DAT 14 DAT 21 DAT
1. Kafe + Ginstar + Finish + Agridex
B. Defol 7 + Gramoxone Inteon + Induce
7floz + 6floz + 12floz + 1pt
1.6qt + 1pt + 1pt
5 NACB
3 NACB
60% OB
80% OB 15 30 20
2. Kafe + Adios + Prep + Agridex
B. Defol 7 + Gramoxone Inteon + Induce
7floz + 6floz + 2pt + 1pt
1.6qt + 1pt + 1pt 5 NACB
3 NACB
60% OB
80% OB 13 23 14
* 1st application sprayed on 28-Sept.
* 2nd application sprayed on 12-Oct.
Table 3.
Percent Open Boll
Treatments Rate/A Timing
Oct. 6 Oct. 12 Oct. 19
8 DAT 14 DAT 21 DAT
1. Kafe + Ginstar + Finish + Agridex
B. Defol 7 + Gramoxone Inteon + Induce
7floz + 6floz + 12floz + 1pt
1.6qt + 1pt + 1pt
5 NACB
3 NACB
60% OB
80% OB 84 90 94
2. Kafe + Adios + Prep + Agridex
B. Defol 7 + Gramoxone Inteon + Induce
7floz + 6floz + 2pt + 1pt
1.6qt + 1pt + 1pt 5 NACB
3 NACB
60% OB
80% OB 84 89 92
* 1st application sprayed on 28-Sept.
* 2nd application sprayed on 12-Oct.
University of California Cooperative Extension – September, 2010 (S.D. Wright, et al) 20
Shark (2-Step Approach) Pima 1 UCCE - WSREC – 2009
Steve Wright, Bob Hutmacher, Lalo Banuelos, Dan Munk, Matt Mills,
Craig Yancy, Tony Garcia, Jon Wrobles, Sara Avila
1st Application (15% Open Boll) 2nd Application (70% Open Boll)
Date Sprayed: 15-Sep Date Sprayed: 24-Sep
Sprayer Type: High Clearnace Spider Sprayer Type: High Clearnace Spider
Air Temp: 72oF Air Temp: 95
oF
Wind Speed: 2-4 MPH Wind Speed: 2-5 MPH
Volume: 15 GPA Volume: 15 GPA
Pressure: 40 PSI Pressure: 40 PSI
Sprayer Speed: 4 MPH Sprayer Speed: 4 MPH
Nozzle Types: 8002 FF Nozzle Types: 8002 FF
Plot Size: 4-40" rows x 65', 4 replications Plot Size: 4-40" rows x 65', 4 replications
Percent Defoliation
Treatments Rates/A Timing
22-Sep 29-Sep
6-
Oct
7 DAT 14 DAT
21
DAT
1. Shark + Agridex
B. Shark + Ginstar + Agridex
0.5 floz + 1 pt
1 floz + 8 oz + 1 pt
8 NACB 3 NACB
15% OB
70% OB 15 35 73
2. Shark + Agridex
B. Shark + Ginstar + Agridex
0.75 floz + 1 pt
1 floz + 8 oz + 1 pt
8 NACB
3 NACB
15% OB
70% OB 14 38 76
3. Shark + Agridex
B. Shark + Ginstar + Agridex
1 floz + 1 pt
1 floz + 8 oz + 1 pt
8 NACB
3 NACB
15% OB
70% OB 18 40 81
4. Ginstar + Finish + Agridex
B. Ginstar + CottonQuik + Agridex
5 oz + 12 oz + 1 pt
10 oz + 3 pt + 1 pt
8 NACB 3 NACB
15% OB
70% OB 21 59 89
5. Untreated --- 13 21 40
Percent Dessication
Treatments Rates/A Timing
22-Sep 29-Sep
6-
Oct
7 DAT 14 DAT
21
DAT
1. Shark + Agridex
B. Shark + Ginstar + Agridex
0.5 floz + 1 pt
1 floz + 8 oz + 1 pt
8 NACB
3 NACB
15% OB
70% OB 18 18 69
2. Shark + Agridex
B. Shark + Ginstar + Agridex
0.75 floz + 1 pt
1 floz + 8 oz + 1 pt
8 NACB
3 NACB
15% OB
70% OB 16 24 56
3. Shark + Agridex
B. Shark + Ginstar + Agridex
1 floz + 1 pt
1 floz + 8 oz + 1 pt
8 NACB
3 NACB
15% OB
70% OB 26 21 79
4. Ginstar + Finish + Agridex
B. Ginstar + CottonQuik + Agridex
5 oz + 12 oz + 1 pt
10 oz + 3 pt + 1 pt
8 NACB
3 NACB
15% OB
70% OB 38 45 91
5. Untreated --- 5 5 15
University of California Cooperative Extension – September, 2010 (S.D. Wright, et al) 21
Percent Open Boll
Treatments Rates/A Timing
22-Sep 29-Sep 6-Oct
7 DAT 14 DAT 21 DAT
1. Shark + Agridex
B. Shark + Ginstar + Agridex
0.5 floz + 1 pt
1 floz + 8 oz + 1 pt
8 NACB
3 NACB
15% OB
70% OB 53 66 74
2. Shark + Agridex
B. Shark + Ginstar + Agridex
0.75 floz + 1 pt
1 floz + 8 oz + 1 pt
8 NACB 3 NACB
15% OB
70% OB 41 61 78
3. Shark + Agridex
B. Shark + Ginstar + Agridex
1 floz + 1 pt
1 floz + 8 oz + 1 pt
8 NACB
3 NACB
15% OB
70% OB 56 66 78
4. Ginstar + Finish + Agridex
B. Ginstar + CottonQuik + Agridex
5 oz + 12 oz + 1 pt
10 oz + 3 pt + 1 pt
8 NACB
3 NACB
15% OB
70% OB 58 69 81
5. Untreated --- 38 54 81
Percent Regrowth
Treatments Rates/A Timing Top Bottom
1. Shark + Agridex
B. Shark + Ginstar + Agridex
0.5 floz + 1 pt
1 floz + 8 oz + 1 pt
8 NACB
3 NACB
15% OB
70% OB 0 1
2. Shark + Agridex
B. Shark + Ginstar + Agridex
0.75 floz + 1 pt
1 floz + 8 oz + 1 pt
8 NACB
3 NACB
15% OB
70% OB 0 0
3. Shark + Agridex
B. Shark + Ginstar + Agridex
1 floz + 1 pt
1 floz + 8 oz + 1 pt
8 NACB
3 NACB
15% OB
70% OB 0 0
4. Ginstar + Finish + Agridex
B. Ginstar + CottonQuik + Agridex
5 oz + 12 oz + 1 pt
10 oz + 3 pt + 1 pt
8 NACB
3 NACB
15% OB
70% OB 0 1
5. Untreated --- 0 0
Treatments Rates/A Timing Lint %
Gin
T.O %
Lint
Yield
Lbs/A
1. Shark + Agridex
B. Shark + Ginstar + Agridex
0.5 floz + 1 pt
1 floz + 8 oz + 1 pt
8 NACB
3 NACB
15% OB
70% OB 38.3 33.6 1665
2. Shark + Agridex
B. Shark + Ginstar + Agridex
0.75 floz + 1 pt
1 floz + 8 oz + 1 pt
8 NACB 3 NACB
15% OB
70% OB 38.2 33.7 1650
3. Shark + Agridex
B. Shark + Ginstar + Agridex
1 floz + 1 pt
1 floz + 8 oz + 1 pt
8 NACB
3 NACB
15% OB
70% OB 38.3 33.7 1672
4. Ginstar + Finish + Agridex
B. Ginstar + CottonQuik + Agridex
5 oz + 12 oz + 1 pt
10 oz + 3 pt + 1 pt
8 NACB
3 NACB
15% OB
70% OB 38.0 33.8 1451
5. Untreated --- 37.8 33.0 1626
University of California Cooperative Extension – September, 2010 (S.D. Wright, et al) 22
2009 Ginstar (2-Step Approach) Pima 2
UCCE - WSREC - 2009
Steve Wright, Bob Hutmacher, Lalo Banuelos, Dan Munk, Matt Mils,
Craig Yancy, Tony Garcia, Jon Wrobles, Sara Avila
1st Application (6 NACB) 2nd Application (4 NACB)
Date Sprayed: 22-Sep Date Sprayed: 24-Sep
Sprayer Type: High Clearance Sprayer Sprayer Type: High Clearnace Spider
Air Temp: 85oF Air Temp: 95oF
Wind Speed: 0-1 MPH Wind Speed: 2-5 MPH
Volume: 15 GPA Volume: 15 GPA
Pressure: 40 PSI Pressure: 40 PSI
Sprayer Speed: 4 MPH Sprayer Speed: 4 MPH
Nozzle Types: 8002 FF Nozzle Types: 8002 FF
Plot Size: 4-40" rows x 65', 4 replications Plot Size: 4-40" rows x 65', 4 replications
Percent Defoliation
Treatments Rates/A Timing
29-Sep 6-Oct 13-Oct
7 DAT 14 DAT 21 DAT
1. Ginstar + Finish + Agridex
B. Ginstar + Finish + Agridex
4 oz + 12 oz + 1 pt
8 oz + 20 oz + 1 pt
6-8
NACB
48 84 90
2. Ginstar + Finish + Agridex
B. Ginstar + Finish + Agridex
4 oz + 12 oz + 1 pt
10 oz + 20 oz + 1 pt 48 85 93
3. Ginstar + Finish + Agridex
B. Ginstar + Finish + Agridex
6 oz + 12 oz + 1 pt
8 oz + 20 oz + 1 pt 48 81 90
4. Ginstar + Finish + Agridex
B. Ginstar + Finish + Agridex
6 oz + 12 oz + 1 pt
10 oz + 20 oz + 1 pt 48 83 91
5. Ginstar + Agridex
B. Ginstar + Finish + Agridex
6 oz + 1 pt
8 oz + 20 oz + 1 pt 39 80 89
6. Ginstar + Finish + Agridex
B. Ginstar + Finish + Agridex
6 oz + 12 oz + 1 pt
8 oz + 20 oz + 1 pt
3-4
NACB
48 88 88
7. Ginstar + Finish + Agridex
B. Ginstar + Finish + Agridex
6 oz + 12 oz + 1 pt
10 oz + 20 oz + 1 pt 55 88 88
8. Ginstar + Agridex
B. Ginstar + Finish + Agridex
6 oz + 1 pt
8 oz + 20 oz + 1 pt 39 81 81
9. Untreated 25 55 68
University of California Cooperative Extension – September, 2010 (S.D. Wright, et al) 23
Percent Dessication
Treatments Rates/A Timing
29-Sep 6-Oct 13-Oct
7 DAT 14 DAT 21 DAT
1. Ginstar + Finish + Agridex
B. Ginstar + Finish + Agridex
4 oz + 12 oz + 1 pt
8 oz + 20 oz + 1 pt
6-8
NACB
24 44 69
2. Ginstar + Finish + Agridex
B. Ginstar + Finish + Agridex
4 oz + 12 oz + 1 pt
10 oz + 20 oz + 1 pt 35 45 69
3. Ginstar + Finish + Agridex
B. Ginstar + Finish + Agridex
6 oz + 12 oz + 1 pt
8 oz + 20 oz + 1 pt 28 56 73
4. Ginstar + Finish + Agridex
B. Ginstar + Finish + Agridex
6 oz + 12 oz + 1 pt
10 oz + 20 oz + 1 pt 33 45 68
5. Ginstar + Agridex
B. Ginstar + Finish + Agridex
6 oz + 1 pt
8 oz + 20 oz + 1 pt 18 60 65
6. Ginstar + Finish + Agridex
B. Ginstar + Finish + Agridex
6 oz + 12 oz + 1 pt
8 oz + 20 oz + 1 pt
3-4
NACB
25 56 60
7. Ginstar + Finish + Agridex
B. Ginstar + Finish + Agridex
6 oz + 12 oz + 1 pt
10 oz + 20 oz + 1 pt 24 53 55
8. Ginstar + Agridex
B. Ginstar + Finish + Agridex
6 oz + 1 pt
8 oz + 20 oz + 1 pt 14 49 55
9. Untreated 8 14 25
Percent Open Boll
Treatments Rates/A Timing
29-Sep 6-Oct 13-Oct
7 DAT 14 DAT 21 DAT
1. Ginstar + Finish + Agridex
B. Ginstar + Finish + Agridex
4 oz + 12 oz + 1 pt
8 oz + 20 oz + 1 pt
6-8
NACB
65 79 90
2. Ginstar + Finish + Agridex
B. Ginstar + Finish + Agridex
4 oz + 12 oz + 1 pt
10 oz + 20 oz + 1 pt 66 79 89
3. Ginstar + Finish + Agridex
B. Ginstar + Finish + Agridex
6 oz + 12 oz + 1 pt
8 oz + 20 oz + 1 pt 66 80 90
4. Ginstar + Finish + Agridex
B. Ginstar + Finish + Agridex
6 oz + 12 oz + 1 pt
10 oz + 20 oz + 1 pt 65 80 89
5. Ginstar + Agridex
B. Ginstar + Finish + Agridex
6 oz + 1 pt
8 oz + 20 oz + 1 pt 61 75 86
6. Ginstar + Finish + Agridex
B. Ginstar + Finish + Agridex
6 oz + 12 oz + 1 pt
8 oz + 20 oz + 1 pt
3-4
NACB
61 83 88
7. Ginstar + Finish + Agridex
B. Ginstar + Finish + Agridex
6 oz + 12 oz + 1 pt
10 oz + 20 oz + 1 pt 64 80 88
8. Ginstar + Agridex
B. Ginstar + Finish + Agridex
6 oz + 1 pt
8 oz + 20 oz + 1 pt 60 79 84
9. Untreated 63 81 89
University of California Cooperative Extension – September, 2010 (S.D. Wright, et al) 24
Percent Regrowth
Treatments Rates/A Timing Top Bottom
1. Ginstar + Finish + Agridex
B. Ginstar + Finish + Agridex
4 oz + 12 oz + 1 pt
8 oz + 20 oz + 1 pt
6-8
NACB
0 0
2. Ginstar + Finish + Agridex
B. Ginstar + Finish + Agridex
4 oz + 12 oz + 1 pt
10 oz + 20 oz + 1 pt 0 0
3. Ginstar + Finish + Agridex
B. Ginstar + Finish + Agridex
6 oz + 12 oz + 1 pt
8 oz + 20 oz + 1 pt 0 0
4. Ginstar + Finish + Agridex
B. Ginstar + Finish + Agridex
6 oz + 12 oz + 1 pt
10 oz + 20 oz + 1 pt 1 1
5. Ginstar + Agridex
B. Ginstar + Finish + Agridex
6 oz + 1 pt
8 oz + 20 oz + 1 pt 0 0
6. Ginstar + Finish + Agridex
B. Ginstar + Finish + Agridex
6 oz + 12 oz + 1 pt
8 oz + 20 oz + 1 pt
3-4
NACB
0 1
7. Ginstar + Finish + Agridex
B. Ginstar + Finish + Agridex
6 oz + 12 oz + 1 pt
10 oz + 20 oz + 1 pt 0 2
8. Ginstar + Agridex
B. Ginstar + Finish + Agridex
6 oz + 1 pt
8 oz + 20 oz + 1 pt 0 1
9. Untreated 0 0
Treatments Rates/A Timing Lint %
Gin
T.O %
Lint
Yield
LBS/A
1. Ginstar + Finish + Agridex
B. Ginstar + Finish + Agridex
4 oz + 12 oz + 1 pt
8 oz + 20 oz + 1 pt
6-8
NACB
38.4 34.1 1645
2. Ginstar + Finish + Agridex
B. Ginstar + Finish + Agridex
4 oz + 12 oz + 1 pt
10 oz + 20 oz + 1 pt 38.5 34.3 1584
3. Ginstar + Finish + Agridex
B. Ginstar + Finish + Agridex
6 oz + 12 oz + 1 pt
8 oz + 20 oz + 1 pt 38.3 34.5 1635
4. Ginstar + Finish + Agridex
B. Ginstar + Finish + Agridex
6 oz + 12 oz + 1 pt
10 oz + 20 oz + 1 pt 38.3 33.9 1601
5. Ginstar + Agridex
B. Ginstar + Finish + Agridex
6 oz + 1 pt
8 oz + 20 oz + 1 pt 38.2 34.4 1616
6. Ginstar + Finish + Agridex
B. Ginstar + Finish + Agridex
6 oz + 12 oz + 1 pt
8 oz + 20 oz + 1 pt
3-4
NACB
38.6 34.4 1610
7. Ginstar + Finish + Agridex
B. Ginstar + Finish + Agridex
6 oz + 12 oz + 1 pt
10 oz + 20 oz + 1 pt 38.3 34.0 1633
8. Ginstar + Agridex
B. Ginstar + Finish + Agridex
6 oz + 1 pt
8 oz + 20 oz + 1 pt 38.7 34.6 1658
9. Untreated 38.0 33.4 1610
University of California Cooperative Extension – September, 2010 (S.D. Wright, et al) 25
Defoliation Screening Pima 3
UCCE - WSREC - 2009
Steve Wright, Bob Hutmacher, Lalo Banuelos, Dan Munk, Matt Mills,
Craig Yancy, Tony Garcia, Jon Wrobles, Sara Avila
Pima 3 (60% Open Boll) 1st Application Pima 3 - Last Application
Date Sprayed: 28-Sep Date Sprayed:
Sprayer Type: High Clearance Spider Sprayer Type: High Clearance Spider
Air Temp: 89oF Air Temp:
Wind Speed: 2-4 MPH Wind Speed:
Volume: 15 GPA Volume: 15 GPA
Pressure: 40 PSI Pressure: 40 PSI
Sprayer Speed: 4 MPH Sprayer Speed: 4 MPH
Nozzle Types: 8002 FF Nozzle Types: 8002 FF
Plot Size: 4-40" rows x 65', 3 replications Plot Size: 4-40" rows x 65', 3 replications
Percent Defoliation
6-Oct 12-Oct 19-Oct
Treatments Rates/A 8 DAT 14 DAT 21 DAT
1. NNH-950-4 + Prep 13.72 floz + 2 pts
65 75 77 B. ET + Gramoxone Inteon + Induce 2.75 floz + 1 pt + 1 pt
2. NNH-950-4 + Prep 20.6 floz + 2 pts
62 73 73 B. ET + Gramoxone Inteon + Induce 2.75 floz + 1 pt + 1 pt
3. NNH-950-4 + Prep 27.44 floz + 2 pts
67 78 80 B. ET + Gramoxone Inteon + Induce 2.75 floz + 1 pt + 1 pt
4. NAI-1289 + Agridex 1 pt + 1 pt
53 75 77 B. ET + Gramoxone Inteon + Induce 2.75 floz + 1 pt + 1 pt
5. NAI-1289 +Agridex 20 floz + 1 pt
63 70 72 B. ET + Gramoxone Inteon + Induce 2.75 floz + 1 pt + 1 pt
6. NAI-1289 + Agridex 24 floz + 1 pt
52 75 78 B. ET + Gramoxone Inteon + Induce 2.75 floz + 1 pt + 1 pt
7. Ginstar + Finish + Agridex 6 floz + 20 floz + 1 pt
55 78 82 B. ET + Gramoxone Inteon + Induce 2.75 floz + 1 pt + 1 pt
8. ET + Prep + Agridex 1 floz + 2 pts + 1 pt
63 75 78 B. ET + Gramoxone Inteon + Induce 2.75 floz + 1 pt + 1 pt
9. ET + Prep + Agridex 1.5 floz + 2 pts + 1 pt
57 77 78 B. ET + Gramoxone Inteon + Induce 2.75 floz + 1 pt + 1 pt
10. ET + Prep + Agridex 2 floz + 2 pts + 1 pt
62 77 80 B. ET + Gramoxone Inteon + Induce 2.75 floz + 1 pt + 1 pt
11. Adios + CottonQuik + Agridex 6 floz + 3 pts + 1 pt
52 78 82 B. Defol 7 + Gramoxone Inteon + Induce 1.6 qts + 1 pt + 1 pt
12. Adios + Prep + Agridex 13 floz + 2 pts + 1 pt
52 73 77 B. Defol 7 + Gramoxone Inteon + Induce 1.6 qts + 1 pt + 1 pt
13. Def + Prep + Agridex 2 pts + 2 pts + 1 pt
57 77 78 B. Defol 7 + Gramoxone Inteon + Induce 1.6 qts + 1 pt + 1 pt
14. Ginstar + Prep + Agridex 6 floz + 2 pts + 1 pt
52 73 82 B. Defol 7 + Gramoxone Inteon + Induce 1.6 qts + 1 pt + 1 pt
15. Ginstar + Finish + Kafe + Agridex 6 floz + 12 floz + 7 floz + 1 pt 43 80 80
University of California Cooperative Extension – September, 2010 (S.D. Wright, et al) 26
B. Defol 7 + Gramoxone Inteon + Induce 1.6 qts + 1 pt + 1 pt
Percent Dessication
6-Oct 12-Oct 19-Oct
Treatments Rates/A 8 DAT 14 DAT 21 DAT
1. NNH-950-4 + Prep 13.72 floz + 2 pts
28 43 50 B. ET + Gramoxone Inteon + Induce 2.75 floz + 1 pt + 1 pt
2. NNH-950-4 + Prep 20.6 floz + 2 pts
40 47 42 B. ET + Gramoxone Inteon + Induce 2.75 floz + 1 pt + 1 pt
3. NNH-950-4 + Prep 27.44 floz + 2 pts
48 57 57 B. ET + Gramoxone Inteon + Induce 2.75 floz + 1 pt + 1 pt
4. NAI-1289 + Agridex 1 pt + 1 pt
33 48 48 B. ET + Gramoxone Inteon + Induce 2.75 floz + 1 pt + 1 pt
5. NAI-1289 +Agridex 20 floz + 1 pt
23 40 42 B. ET + Gramoxone Inteon + Induce 2.75 floz + 1 pt + 1 pt
6. NAI-1289 + Agridex 24 floz + 1 pt
35 45 42 B. ET + Gramoxone Inteon + Induce 2.75 floz + 1 pt + 1 pt
7. Ginstar + Finish + Agridex 6 floz + 20 floz + 1 pt
23 52 72 B. ET + Gramoxone Inteon + Induce 2.75 floz + 1 pt + 1 pt
8. ET + Prep + Agridex 1 floz + 2 pts + 1 pt
33 43 38 B. ET + Gramoxone Inteon + Induce 2.75 floz + 1 pt + 1 pt
9. ET + Prep + Agridex 1.5 floz + 2 pts + 1 pt
42 45 55 B. ET + Gramoxone Inteon + Induce 2.75 floz + 1 pt + 1 pt
10. ET + Prep + Agridex 2 floz + 2 pts + 1 pt
42 48 42 B. ET + Gramoxone Inteon + Induce 2.75 floz + 1 pt + 1 pt
11. Adios + CottonQuik + Agridex 6 floz + 3 pts + 1 pt
20 58 67 B. Defol 7 + Gramoxone Inteon + Induce 1.6 qts + 1 pt + 1 pt
12. Adios + Prep + Agridex 13 floz + 2 pts + 1 pt
18 47 43 B. Defol 7 + Gramoxone Inteon + Induce 1.6 qts + 1 pt + 1 pt
13. Def + Prep + Agridex 2 pts + 2 pts + 1 pt
25 52 57 B. Defol 7 + Gramoxone Inteon + Induce 1.6 qts + 1 pt + 1 pt
14. Ginstar + Prep + Agridex 6 floz + 2 pts + 1 pt
20 52 62 B. Defol 7 + Gramoxone Inteon + Induce 1.6 qts + 1 pt + 1 pt
15. Ginstar + Finish + Kafe + Agridex 6 floz + 12 floz + 7 floz + 1 pt
18 43 38 B. Defol 7 + Gramoxone Inteon + Induce 1.6 qts + 1 pt + 1 pt
University of California Cooperative Extension – September, 2010 (S.D. Wright, et al) 27
Percent Open Boll
6-Oct 12-Oct 19-Oct
Treatments Rates/A 8 DAT 14 DAT 21 DAT
1. NNH-950-4 + Prep 13.72 floz + 2 pts
82 90 96 B. ET + Gramoxone Inteon + Induce 2.75 floz + 1 pt + 1 pt
2. NNH-950-4 + Prep 20.6 floz + 2 pts
82 89 95 B. ET + Gramoxone Inteon + Induce 2.75 floz + 1 pt + 1 pt
3. NNH-950-4 + Prep 27.44 floz + 2 pts
80 87 96 B. ET + Gramoxone Inteon + Induce 2.75 floz + 1 pt + 1 pt
4. NAI-1289 + Agridex 1 pt + 1 pt
82 88 96 B. ET + Gramoxone Inteon + Induce 2.75 floz + 1 pt + 1 pt
5. NAI-1289 +Agridex 20 floz + 1 pt
82 89 95 B. ET + Gramoxone Inteon + Induce 2.75 floz + 1 pt + 1 pt
6. NAI-1289 + Agridex 24 floz + 1 pt
82 88 95 B. ET + Gramoxone Inteon + Induce 2.75 floz + 1 pt + 1 pt
7. Ginstar + Finish + Agridex 6 floz + 20 floz + 1 pt
80 90 96 B. ET + Gramoxone Inteon + Induce 2.75 floz + 1 pt + 1 pt
8. ET + Prep + Agridex 1 floz + 2 pts + 1 pt
82 89 94 B. ET + Gramoxone Inteon + Induce 2.75 floz + 1 pt + 1 pt
9. ET + Prep + Agridex 1.5 floz + 2 pts + 1 pt
85 91 96 B. ET + Gramoxone Inteon + Induce 2.75 floz + 1 pt + 1 pt
10. ET + Prep + Agridex 2 floz + 2 pts + 1 pt
85 90 96 B. ET + Gramoxone Inteon + Induce 2.75 floz + 1 pt + 1 pt
11. Adios + CottonQuik + Agridex 6 floz + 3 pts + 1 pt
85 93 96 B. Defol 7 + Gramoxone Inteon + Induce 1.6 qts + 1 pt + 1 pt
12. Adios + Prep + Agridex 13 floz + 2 pts + 1 pt
83 93 96 B. Defol 7 + Gramoxone Inteon + Induce 1.6 qts + 1 pt + 1 pt
13. Def + Prep + Agridex 2 pts + 2 pts + 1 pt
83 88 96 B. Defol 7 + Gramoxone Inteon + Induce 1.6 qts + 1 pt + 1 pt
14. Ginstar + Prep + Agridex 6 floz + 2 pts + 1 pt
80 92 96 B. Defol 7 + Gramoxone Inteon + Induce 1.6 qts + 1 pt + 1 pt
15. Ginstar + Finish + Kafe + Agridex 6 floz + 12 floz + 7 floz + 1 pt
83 85 95 B. Defol 7 + Gramoxone Inteon + Induce 1.6 qts + 1 pt + 1 pt
University of California Cooperative Extension – September, 2010 (S.D. Wright, et al) 28
Percent Regrowth
Treatments Rates/A Top Bottom
1. NNH-950-4 + Prep 13.72 floz + 2 pts
0 1 B. ET + Gramoxone Inteon + Induce 2.75 floz + 1 pt + 1 pt
2. NNH-950-4 + Prep 20.6 floz + 2 pts
0 1 B. ET + Gramoxone Inteon + Induce 2.75 floz + 1 pt + 1 pt
3. NNH-950-4 + Prep 27.44 floz + 2 pts
0 1 B. ET + Gramoxone Inteon + Induce 2.75 floz + 1 pt + 1 pt
4. NAI-1289 + Agridex 1 pt + 1 pt
0 0 B. ET + Gramoxone Inteon + Induce 2.75 floz + 1 pt + 1 pt
5. NAI-1289 +Agridex 20 floz + 1 pt
2 2 B. ET + Gramoxone Inteon + Induce 2.75 floz + 1 pt + 1 pt
6. NAI-1289 + Agridex 24 floz + 1 pt
0 1 B. ET + Gramoxone Inteon + Induce 2.75 floz + 1 pt + 1 pt
7. Ginstar + Finish + Agridex 6 floz + 20 floz + 1 pt
0 0 B. ET + Gramoxone Inteon + Induce 2.75 floz + 1 pt + 1 pt
8. ET + Prep + Agridex 1 floz + 2 pts + 1 pt
0 2 B. ET + Gramoxone Inteon + Induce 2.75 floz + 1 pt + 1 pt
9. ET + Prep + Agridex 1.5 floz + 2 pts + 1 pt
0 0 B. ET + Gramoxone Inteon + Induce 2.75 floz + 1 pt + 1 pt
10. ET + Prep + Agridex 2 floz + 2 pts + 1 pt
1 3 B. ET + Gramoxone Inteon + Induce 2.75 floz + 1 pt + 1 pt
11. Adios + CottonQuik + Agridex 6 floz + 3 pts + 1 pt
1 1 B. Defol 7 + Gramoxone Inteon + Induce 1.6 qts + 1 pt + 1 pt
12. Adios + Prep + Agridex 13 floz + 2 pts + 1 pt
0 1 B. Defol 7 + Gramoxone Inteon + Induce 1.6 qts + 1 pt + 1 pt
13. Def + Prep + Agridex 2 pts + 2 pts + 1 pt
0 2 B. Defol 7 + Gramoxone Inteon + Induce 1.6 qts + 1 pt + 1 pt
14. Ginstar + Prep + Agridex 6 floz + 2 pts + 1 pt
1 2 B. Defol 7 + Gramoxone Inteon + Induce 1.6 qts + 1 pt + 1 pt
15. Ginstar + Finish + Kafe + Agridex 6 floz + 12 floz + 7 floz + 1 pt
0 1 B. Defol 7 + Gramoxone Inteon + Induce 1.6 qts + 1 pt + 1 pt