DP 515 BG/RR A New Mid-Full Maturing Picker Variety With Bollgard & Roundup Ready

DP 515 BG/RRA New Mid-Full Maturing Picker Variety

With Bollgard & Roundup Ready

Ken E. Lege’, Ph.D.Dir. of Technical Service

East Region

Piedmont, AL

Curtis Williams, Ph.D.Senior Breeder

Tifton, GA

DP 515 BG/RR(DPLX04Y170BR)

• Breeder: Dr. Curtis Williams, Tifton, GA• Mid-Full maturity• Semi-smooth leaves• Tall, upright plant• Bushy fruiting habit• Excellent yield potential (yielded = DP 555 BG/RR)

• Very good fiber quality potential (better than DP 555 BG/RR)

• Storm tolerance: 4 (1=loose, 10=high plains type)

• Seed size (#/lb): 5300-5800 (slightly larger vs. DP 555 BG/RR)

Tested Beltwide in OVTs, ASTs in 2005Introductory commercial quantities in 2006Full commercial quantities expected for 2007

Characteristics

DP 515 BG/RRBreeding History2000 – Original cross made at Scott, MS2000-01 – F1 grown at Costa Rica2001 – F2 bulk population grown at Tifton, GA; selected for

apparent yield, maturity, lint percent & HVI2002 – F2:3 progeny rows grown at Tifton, GA and sprayed

OT with glyphosate @ 4TL stage; row # 1134, later tested as DPLX04Y170BR, selected for maturity, apparent yield potential, lint percent & HVI

2003 – Replicated tests at 3 GA locations; seed increased at Scott, MS

2003-04 – Seed increased at Costa Rica2004 – Tested at 14 replicated stage 4 locations beltwide;

seed increased in AZ2005 – Large-plot, on-farm testing and OVT testing beltwide2006 – Continued large-scale testing and introductory

commercial quantities

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160D

P 5

15 B

G/R

R

DP

143

B2

RF

Relative Difference in DD60s to reach 100% open*

*based on D&PL Technical Services final plant map data compiled as of 12.7.2006

Relative Maturity DifferencesBeltwide

DP

555

BG

/RR

DP

444

BG

/RR

DP

117

B2

RF

DP

164

B2

RF

DP

445

BG

/RR

DP

455

BG

/RR

DP

449

BG

/RR

DP

454

BG

/RR

DP

488

BG

/RR

DP

110

RF

DP

147

RF

DP

434

RR

DP

432

RR

DP

494

RR

DP

167

RF

DP

121

RF

66 on-farm locations Beltwide; 2005-06; 12-19-06

Plant Ht (in)

Total Nodes

Fruit-ing

Nodes

Height:Node Ratio

(in/inter-node)

Node of 1st Fruit-ing

Branch

Node of Upper-most

Cracked Boll

Node of Upper-most

Harvest-able Boll

DD60s earlier vs DP

555 BG/RR

DP 445 BG/RR 35.0 19.8 11.2 1.77 5.6 11.5 15.8 105

DP 455 BG/RR 39.5 21.3 12.1 1.86 5.7 11.7 16.8 70

DP 454 BG/RR 37.3 21.2 11.7 1.77 6.1 11.8 16.8 73

DP 515 BG/RR 38.2 22.0 12.2 1.73 6.3 12.2 17.5 54

DP 555 BG/RR 41.0 23.4 13.1 1.75 6.7 12.5 18.9

LSD (0.05) 3.7 1.6 1.6 NS 0.6 NS 1.5 86

DP 515 BG/RR vs mid-full D&PL BG/RRsPlant Growth and Maturity

Values within columns in blue font do not significantly differ from the highest value (underlined) at P<0.05.

DP 515 BG/RR Performance

• Vs. key D&PL BG/RRs– DP 555 BG/RR (#1 in 2006)– DP 444 BG/RR (#2 in 2006)– DP 445 BG/RR– DP 455 BG/RR– DP 454 BG/RR

• Vs. key competitor varieties

*source: ‘Cotton Varieties Planted, 2006 Crop’, USDA-AMS

Cents/lb or Loan Value = $0.52/lb +/- premiums or discounts according to 2006 USDA Loan Chart; $/A = Yield x Loan;T test: NS = not significant; *** = significant at P <0.001

DP 515 BG/RR vs DP 555 BG/RR2005-06 Beltwide data; all datasources (as of 12-19-06)

% D

iffe

ren

ce

DP 515 BG/RR 655 1199 38.7 35.8 4.55 29.4 82.4 53.98DP 555 BG/RR 653 1203 40.3 35.4 4.51 28.6 81.6 53.66n 333 357 348 333 333 333 333 332T test NS NS *** *** NS *** *** NS

DP 515 BG/RR vs DP 555 BG/RRAll Data Sources (as of 12-19-06)

% Y

ield

Dif

fere

nce

N 7 5 7 14 20 14 79 43 111 57

(+ = DP 515 BG/RR better)

Regional Performance

No significant differences, according to T testsWest = SJV and AZ; High Plains = Northern and Southern HP


% D

iffe

ren

ce

DP 515 BG/RR 637 1168 38.1 35.8 4.51 29.5 82.4 54.30DP 444 BG/RR 627 1143 38.4 35.8 4.10 29.3 82.9 54.54n 358 380 371 358 358 358 358 357T test NS NS NS NS *** NS *** NS



% Y

ield

Dif

fere

nce

N 8 12 25 17 8 75 110 56 66



* = significant at P< 0.05, according to T test; all other regional differences were not significantHigh Plains = Northern and Southern HP

*


% D

iffe

ren

ce

DP 515 BG/RR 649 1191 38.4 35.9 4.53 29.5 82.5 54.26DP 445 BG/RR 656 1184 38.5 36.2 4.42 31.0 83.1 55.00n 442 470 461 442 442 442 442 441T test NS NS NS *** *** *** *** ***



% Y

ield

Dif

fere

nce

N 7 5 10 12 29 17 9 78 103 117 83



* = significant at P< 0.05, according to T test; all other regional differences were not significantHigh Plains = Northern and Southern HP

*


% D

iffe

ren

ce

DP 515 BG/RR 650 1190 38.5 35.9 4.53 29.4 82.5 54.18DP 455 BG/RR 635 1140 39.2 36.1 4.19 30.1 82.1 55.03n 425 454 445 425 425 425 425 424T test NS * ** * *** *** *** ***

Cents/lb or Loan Value = $0.52/lb +/- premiums or discounts according to 2006 USDA Loan Chart; $/A = Yield x Loan;T test: NS = not significant; *, **, *** = significant at P <0.05, <0.01, and <0.001, respectively


% Y

ield

Dif

fere

nce

N 7 10 13 28 17 10 77 90 119 83



-10.6%

* = significant at P< 0.05, according to T test; all other regional differences were not significantWest = SJV and AZ; High Plains = Northern and Southern HP

*


% D

iffe

ren

ce

DP 515 BG/RR 653 1196 38.6 35.9 4.53 29.5 82.5 54.18DP 454 BG/RR 643 1193 39.5 35.1 4.10 29.3 82.4 53.29n 438 460 451 438 438 438 438 438T test NS NS *** *** *** NS NS ***

Cents/lb or Loan Value = $0.52/lb +/- premiums or discounts according to 2006 USDA Loan Chart; $/A = Yield x Loan;T test: NS = not significant; *** = significant at P<0.001


% Y

ield

Dif

fere

nce

N 9 6 11 23 17 6 81 110 116 81



No significant differences, according to T testsWest = SJV and AZ; High Plains = Northern and Southern HP

DP 515 BG/RR vs DP 555 BG/RR and Competitors

Variety n $ /

acre

Yie

ld

% T

urno

ut

Sta

ple

Mic

rona

ire

Str

engt

h

Uni

form

ity

cent

s/lb

DP 515 BG/RR 189 617 1132 37.8 35.4 4.62 28.8 81.9 54.22DP 555 BG/RR 226 608 1117 39.3 35.1 4.53 28.4 81.0 54.06PHY470WR 125 601 1104 35.4 35.5 4.43 30.9 82.8 54.28ST5599BR 234 594 1106 37.4 35.1 4.63 28.9 81.7 53.38ST4554B2RF 181 587 1073 36.2 35.4 4.58 29.7 81.9 54.18FM960B2R 170 584 1057 35.8 36.3 4.30 30.8 81.9 55.14450001G 182 529 959 35.1 35.9 4.18 27.5 81.7 54.71PHY485WRF 136 528 1003 35.7 35.4 4.60 30.2 82.5 52.09LSD (0.05) NS NS 2.9 NS NS 2.7 1.6 NS

Cents/lb or Loan Value = $0.52/lb +/- premiums or discounts according to 2006 USDA Loan Chart; $/A = Yield x Loan;Values within columns in blue font do not significantly differ from the highest value (underlined) at P<0.05.450001G sold as brands DG2520B2RF, CG4020B2RF, ST4357B2RF, BW4630B2RF and Americot 1532 B2RF.

Least square mean analysis; restricted to trials where >4 of these varieties were tested;2005-06 Beltwide data; all datasources as of 12-19-06

Summary – DP 515 BG/RR

• Good companion to DP 555 BG/RR– Earlier maturity, but still mid-full– Slightly better seedling vigor– Less aggressive growth habit– Slightly better storm tolerance– Slightly better fiber quality potential– Equivalent yield potential

• Good yield performance vs. D&PL early- to mid-maturing varieties– DP 444 BG/RR, DP 445 BG/RR, DP 455 BG/RR &

DP 454 BG/RR

Summary – DP 515 BG/RRcont’d

• Strong yield & fiber quality performance history – Midsouth/SE, and picker areas of TX– Best performance in southern tier

• Strong performance history against key competitor varieties

DP 515 BG/RR A New Mid-Full Maturing Picker Variety With Bollgard & Roundup Ready

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