INFLUENCE OF PHC PRODUCTS ON POTATO GROWTH AND YIELD PT-06-11 Summary Across Studies - WA Only...
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Transcript of INFLUENCE OF PHC PRODUCTS ON POTATO GROWTH AND YIELD PT-06-11 Summary Across Studies - WA Only...
INFLUENCE OF PHC PRODUCTS ON POTATO GROWTH AND YIELD
PT-06-11 Summary Across Studies - WA Only
PRE-HARVEST APPLICATION EFFECTS ON POST-HARVEST STORAGE
Procedure:•50.00 lbs of potatoes pulled from each plot•Samples placed in a plastic tray•Trays placed on catwalk in the growers’ storage buildings
Freihe Storage
INFLUENCE OF PHC PRODUCTS ON POTATO GROWTH AND YIELD
PT-06-11 Summary Across Studies - WA Only
PRE-HARVEST APPLICATION EFFECTS ON POST-HARVEST STORAGE
Procedure:•50.00 lbs of potatoes pulled from each plot•Samples placed in a plastic tray•Trays placed on catwalk in the growers’ storage buildings
Calloway Storage Catwalk
INFLUENCE OF PHC PRODUCTS ON POTATO GROWTH AND YIELD
PT-06-11 Summary Across Studies - WA Only
PRE-HARVEST APPLICATION EFFECTS ON POST-HARVEST STORAGE
Trays placed on catwalk in the growers’ storage buildings
INFLUENCE OF PHC PRODUCTS ON POTATO GROWTH AND YIELD
PT-06-11 Summary Across Studies - WA Only
PRE-HARVEST APPLICATION EFFECTS ON POST-HARVEST STORAGE
Procedure continued:•Samples weighed on 24 Apr 2012•Each sample weighed to the nearest 1/4 of a pound
INFLUENCE OF PHC PRODUCTS ON POTATO GROWTH AND YIELD
PT-06-11 Summary Across Studies - WA Only
PRE-HARVEST APPLICATION EFFECTS ON POST-HARVEST STORAGE
This chart presents the results for each location and the average for all. There were 2 rotten tubers in the untreated at Quincy.
Quincy Moses Lake Odessa Warden Average44
45
46
47
48
49
50
51
UTC Myconate Both Employ
Poun
ds L
eft a
t En
d of
Sto
rage
INFLUENCE OF PHC PRODUCTS ON POTATO GROWTH AND YIELD
PT-06-11 Summary Across Studies - WA Only
PRE-HARVEST APPLICATION EFFECTS ON POST-HARVEST STORAGE
UTC Myconate Both Employ0.0%
0.5%
1.0%
1.5%
2.0%
2.5%
3.0%
3.5%
Perc
ent
Lost
in S
tora
ge
-50%-46%
-62%
This chart presents the average of all locations. Differences, while large, were not statistically significant.
INFLUENCE OF PHC PRODUCTS ON POTATO GROWTH AND YIELD
PT-06-11 Summary Across Studies - WA Only
PRE-HARVEST APPLICATION EFFECTS ON POST-HARVEST STORAGE
-1.0% 0.0% 1.0% 2.0% 3.0% 4.0% 5.0% 6.0% 7.0%0%
10%
20%
30%
40%
50%
60%
70%
80%f(x) = 130.673360996674 x² − 0.452172065957081 x + 0.322269566251299R² = 0.743475037365103
Employ
Gross Yield Increase
Stor
age
Incr
ease
There was a fairly good correlation between the in-season yield and the increase in storage for Employ. This suggests that the application may have been less than optimal at
the lowest site.
INFLUENCE OF PHC PRODUCTS ON POTATO GROWTH AND YIELD
PT-06-11 Summary Across Studies - WA Only
PRE-HARVEST APPLICATION EFFECTS ON POST-HARVEST STORAGE
Results and Conclusions:
• 50 pound samples were pulled from the harvested crop and placed inside growers’ storage buildings for approximately 7 months.
• Overall loss in storage was slight. All 3 treatments resulted in less storage loss than the untreated.
• Employ alone had the largest effect on storage loss, reducing it from about 3.25% in the untreated to about 1.25% in the Employ treated tubers.
• At the current market value of stored potatoes, about $150/ton, the dollar value of the saved tubers was $15,000 per storage building or about $120/acre.
Summarized by Paul Bystrak
Procedure:• At all 9 locations, a single sample of potatoes was pulled from each of the plots. Starting
weights were recorded before storage and ranged from 50 – 75 lbs. • After 7-8 months in storage, potatoes were counted, separated by grade and weighed.
Rotten potatoes were counted and weighed. Internal defects were evaluated by taking 25 tubers and cutting the stem end to look for discoloration and the depth of the discoloration, then splitting them to look for hollow heart and brown center.
• At 2 locations, unusual amounts of tubers were ‘lost’. This may have been a recording error at the start (unlikely, since the samples from each location were about the same size) or they may have been lost to rot. In ARM, the missing data are replaced with Yates estimates, which were not used for analysis.
• Data were entered into ARM as a 9 replicate trial and analyzed statistically (Fisher’s Protected LSD, P = 0.1). This technique does not provide an estimate of the location*treatment effect.
INFLUENCE OF PHC PRODUCTS ON POTATO GROWTH AND YIELD
PT-06-11 Summary Across Studies - ID Only
Summarized by Paul Bystrak.
PRE-HARVEST APPLICATION EFFECTS ON POST-HARVEST STORAGE
INFLUENCE OF PHC PRODUCTS ON POTATO GROWTH AND YIELD
PT-06-11 Summary Across Studies - ID Only
PRE-HARVEST APPLICATION EFFECTS ON POST-HARVEST STORAGE
211098 211104 211114 211115 211119 211126 211126 211133 211140 Ave70%
75%
80%
85%
90%
95%
100%UTC Myconate Both Employ
Perc
ent
Rem
aini
ng in
Sto
rage
This chart shows the percent of original weight remaining after 7-8 months of storage for each trial site and the average of all.
Unreplicated Grower Demo trials: Myconate HB applied to seed pieces at 2 oz/acre’s worth of seed; Employ applied at 2 oz/A at end of set and 3 weeks after. Means associated with the same letter are not statistically different (Fisher's Protected LSD, P = 0.10).
INFLUENCE OF PHC PRODUCTS ON POTATO GROWTH AND YIELD
PT-06-11 Summary Across Studies - ID Only
PRE-HARVEST APPLICATION EFFECTS ON POST-HARVEST STORAGE
UTC Myconate Both Employ0%
1%
2%
3%
4%
5%
6%
Perc
ent
Lost
in S
tora
ge
-57.6%-55.7%
-18.3%
Unreplicated Grower Demo trials: Myconate HB applied to seed pieces at 2 oz/acre’s worth of seed; Employ applied at 2 oz/A at end of set and 3 weeks after. Means associated with the same letter are not statistically different (Fisher's Protected LSD, P = 0.10).
This chart shows the average percent of weight lost during storage for each trial site. Results for entries with Employ are very similar to each other, as are those without Employ.
INFLUENCE OF PHC PRODUCTS ON POTATO GROWTH AND YIELD
PT-06-11 Summary Across Studies - ID Only
PRE-HARVEST APPLICATION EFFECTS ON POST-HARVEST STORAGE
Myconate Combo Employ0%
10%
20%
30%
40%
50%
60%
70%
Storage Improvement Improvement in Brown Center
Unreplicated Grower Demo trials: Myconate HB applied to seed pieces at 2 oz/acre’s worth of seed; Employ applied at 2 oz/A at end of set and 3 weeks after. Means associated with the same letter are not statistically different (Fisher's Protected LSD, P = 0.10).
Brown Center is a physiological storage condition caused by stress during the growing season. Reduction in Brown Center occurrence closely matched reduction in weight lost
for Employ.
INFLUENCE OF PHC PRODUCTS ON POTATO GROWTH AND YIELD
PT-06-11 Summary Across Studies - ID Only
PRE-HARVEST APPLICATION EFFECTS ON POST-HARVEST STORAGE
-10% -5% 0% 5% 10% 15% 20% 25%
-80%
-60%
-40%
-20%
0%
20%
40%
60%
80%
100%
f(x) = − 1.63577010062439 x² + 3.43508957879723 x + 0.016724800949386R² = 0.396581939841576
Employ
Percent Yield Increase
Perc
ent
Impr
oved
Sto
rage
Unreplicated Grower Demo trials: Myconate HB applied to seed pieces at 2 oz/acre’s worth of seed; Employ applied at 2 oz/A at end of set and 3 weeks after. Means associated with the same letter are not statistically different (Fisher's Protected LSD, P = 0.10).
Yield Increase correlated positively with the reduction in loss during storage.
Results and Conclusions:• At all 9 locations, a single sample of potatoes was pulled from each of the plots
and placed into storage. • After 7-8 months in storage, potatoes were counted, separated by grade and
weighed. • Overall losses were slight except in a few situations. Losses in the Employ treated
samples were substantially less than in the untreated or Myconate treated samples.
• The effects of Employ in storage were positively correlated with the effects on yield.
• Samples treated with Employ had a lower incidence of Brown Center than samples that were not treated with it.
INFLUENCE OF PHC PRODUCTS ON POTATO GROWTH AND YIELD
PT-06-11 Summary Across Studies - ID Only
PRE-HARVEST APPLICATION EFFECTS ON POST-HARVEST STORAGE