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

DP 515 BG/RR A New Mid-Full Maturing Picker Variety With Bollgard & Roundup Ready. Curtis Williams, Ph.D. Senior Breeder Tifton, GA. Ken E. Lege’, Ph.D. Dir. of Technical Service East Region Piedmont, AL. DP 515 BG/RR (DPLX04Y170BR). Characteristics.

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

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  1. DP 515 BG/RRA New Mid-Full Maturing Picker Variety With Bollgard & Roundup Ready Curtis Williams, Ph.D. Senior Breeder Tifton, GA Ken E. Lege’, Ph.D. Dir. of Technical Service East Region Piedmont, AL

  2. DP 515 BG/RR(DPLX04Y170BR) Characteristics • 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 2005 Introductory commercial quantities in 2006 Full commercial quantities expected for 2007

  3. DP 515 BG/RRBreeding History 2000 – Original cross made at Scott, MS 2000-01 – F1 grown at Costa Rica 2001 – F2 bulk population grown at Tifton, GA; selected for apparent yield, maturity, lint percent & HVI 2002 – 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 Rica 2004 – Tested at 14 replicated stage 4 locations beltwide; seed increased in AZ 2005 – Large-plot, on-farm testing and OVT testing beltwide 2006 – Continued large-scale testing and introductory commercial quantities

  4. Relative Maturity Differences Beltwide DP 147 RF DP 445 BG/RR DP 455 BG/RR DP 515 BG/RR DP 449 BG/RR DP 454 BG/RR DP 488 BG/RR DP 555 BG/RR DP 444 BG/RR DP 117 B2RF DP 143 B2RF DP 164 B2RF DP 434 RR DP 121 RF DP 167 RF DP 432 RR DP 494 RR DP 110 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

  5. DP 515 BG/RR vs mid-full D&PL BG/RRs Plant Growth and Maturity Values within columns in blue font do not significantly differ from the highest value (underlined) at P<0.05.

  6. 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

  7. DP 515 BG/RR vs DP 555 BG/RR 2005-06 Beltwide data; all datasources (as of 12-19-06) % Difference 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

  8. DP 515 BG/RR vs DP 555 BG/RR All Data Sources (as of 12-19-06) Regional Performance (+ = DP 515 BG/RR better) % Yield Difference N 7 5 7 14 20 14 79 43 111 57 No significant differences, according to T tests West = SJV and AZ; High Plains = Northern and Southern HP

  9. DP 515 BG/RR vs DP 444 BG/RR 2005-06 Beltwide data; all datasources (as of 12-19-06) % Difference 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

  10. DP 515 BG/RR vs DP 444 BG/RR All Data Sources (as of 12-19-06) Regional Performance (+ = DP 515 BG/RR better) * % Yield Difference 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 significant High Plains = Northern and Southern HP

  11. DP 515 BG/RR vs DP 445 BG/RR 2005-06 Beltwide data; all datasources (as of 12-19-06) % Difference 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

  12. DP 515 BG/RR vs DP 445 BG/RR All Data Sources (as of 12-19-06) Regional Performance (+ = DP 515 BG/RR better) * % Yield Difference 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 significant High Plains = Northern and Southern HP

  13. DP 515 BG/RR vs DP 455 BG/RR 2005-06 Beltwide data; all datasources (as of 12-19-06) % Difference 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

  14. DP 515 BG/RR vs DP 455 BG/RR All Data Sources (as of 12-19-06) Regional Performance (+ = DP 515 BG/RR better) * % Yield Difference -10.6% N 7 10 13 28 17 10 77 90 119 83 * = significant at P< 0.05, according to T test; all other regional differences were not significant West = SJV and AZ; High Plains = Northern and Southern HP

  15. DP 515 BG/RR vs DP 454 BG/RR 2005-06 Beltwide data; all datasources (as of 12-19-06) % Difference 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

  16. DP 515 BG/RR vs DP 454 BG/RR All Data Sources (as of 12-19-06) Regional Performance (+ = DP 515 BG/RR better) % Yield Difference N 9 6 11 23 17 6 81 110 116 81 No significant differences, according to T tests West = SJV and AZ; High Plains = Northern and Southern HP

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

  18. 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

  19. 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

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