Cotton Variety Selection and Management

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1 Cotton Variety Selection and Management Guy D. Collins, Ph.D. Cotton Extension Associate Professor Cotton County Meetings

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3 Successful Launch in 2015!!

4 NC On-Farm Cotton Variety Evaluation Program 2015 Variety Entries DP 1538 B2XF DP 1522 B2XF NG 3405 B2XF NG 3406 B2XF PHY 495 W3RF PHY 333 WRF PHY 444 WRF ST 4946 GLB2 ST 4747 GLB2 DG 3385 B2XF

5 Thank You!!

6 Thank You!! NCSU County Agents Consultants Seed Companies Cooperating Growers

7 2015 Costs of Improper Variety Selection: $0.65/lb Variety Selection Error Range of costs Average Cost Large Error (Top vs Bottom variety) $103 to $315 per acre $156 Small Error (Top 3 vs the others) $69 to $236 per acre $120 Improper Variety Selection could ve cost NC growers $45,600,000 to $59,280,000 on AVG in 2015 when choosing among only best varieties!!!

8 Variety selection considerations Understand your Yield Limiting Factors...field x field basis Water (soils), weed control, nematodes, plant growth, realistic yield potential Be CAUTIOUS with field observations!!! Every variety can perform well or poorly Yield is influenced by small variations in environment Evaluate varieties under the SAME conditions!!! 2015 trials Lowest Yield Env. Highest Yield Env. Top Variety Bottom Variety Difference in Yield Stability is the best predictor of performance Every variety can win or lose a trial.no variety wins them all!! How frequently a variety performs at or near the top determines stability = strong performance across soils, weather and rainfall patterns, planting dates, grower management practices, etc Observe Multi-Location and Multi-Year Data (OVT & On-Farm Trials) Plant multiple varieties (all have strengths and weaknesses)

9 NC On-Farm Trials (Stability) Variety Combined AVG Yield % #1 % Top 2 % Top 3 % of trials in highest group (p<0.1) DP 1538 B2XF ST 4946 GLB DP 1522 B2XF PHY 495 W3RF PHY 333 WRF PHY 444 WRF DG 3385 B2XF NG 3405 B2XF ST 4747 GLB NG 3406 B2XF

10 NC OVT 2015 (TOP 20) AVG Variety Yield % NS p<0.1 DP 1558 NR B2RF DG 3757 B2XF BX 1532 GLT BX 1531 GLT DG 3526 B2XF NG 3522 B2XF DP 1639 B2XF DP 1646 B2XF DP 1522 B2XF PHY 333 WRF DP 1614 B2XF PHY 499 WRF MON 15R513B2XF DP 1555 B2RF PHY 495 W3RF DP 1538 B2XF PHY 312 WRF ST 4946 GLB DP 1553 B2XF ST 6182 GLT Trial AVG

11 NC OVT 2015 (TOP 20) AVG Variety Yield % NS p<0.1 DP 1558 NR B2RF DG 3757 B2XF BX 1532 GLT BX 1531 GLT DG 3526 B2XF NG 3522 B2XF DP 1639 B2XF DP 1646 B2XF DP 1522 B2XF PHY 333 WRF DP 1614 B2XF PHY 499 WRF MON 15R513B2XF DP 1555 B2RF PHY 495 W3RF DP 1538 B2XF PHY 312 WRF ST 4946 GLB DP 1553 B2XF ST 6182 GLT Trial AVG

12 Low Yielding Environments (< 1000 lbs/a) 12 Trials Variety AVG Yield DP 1538 B2XF 790 DP 1522 B2XF 767 ST 4946 GLB2 754 PHY 333 WRF 736 PHY 495 W3RF 727 DG 3385 B2XF 720 NG 3406 B2XF 698 NG 3405 B2XF 687 PHY 444 WRF 680 ST 4747 GLB2 665

13 High Yielding Environments (> 1000 lbs/a) 11 Trials Variety AVG Yield DP 1538 B2XF 1165 ST 4946 GLB DP 1522 B2XF 1137 PHY 495 W3RF 1137 PHY 444 WRF 1131 PHY 333 WRF 1107 NG 3405 B2XF 1101 DG 3385 B2XF 1081 ST 4747 GLB NG 3406 B2XF 1022

14 Northeastern NC 8 Trials Variety AVG Yield DP 1538 B2XF 1119 ST 4946 GLB PHY 333 WRF 1058 PHY 495 W3RF 1054 PHY 444 WRF 1050 NG 3405 B2XF 1050 DP 1522 B2XF 1048 DG 3385 B2XF 1012 ST 4747 GLB2 970 NG 3406 B2XF 954

15 Blacklands 4 Trials Variety AVG Yield DP 1522 B2XF 929 ST 4747 GLB2 890 DP 1538 B2XF 870 PHY 495 W3RF 866 DG 3385 B2XF 851 NG 3406 B2XF 839 PHY 333 WRF 839 NG 3405 B2XF 823 ST 4946 GLB2 822 PHY 444 WRF 808

16 Central Coastal Plains 7 Trials Variety AVG Yield DP 1538 B2XF 992 PHY 495 W3RF 970 ST 4946 GLB2 958 DP 1522 B2XF 949 PHY 444 WRF 923 PHY 333 WRF 886 NG 3405 B2XF 884 DG 3385 B2XF 862 NG 3406 B2XF 861 ST 4747 GLB2 834

17 Southern Coastal Plains 3 Trials Variety AVG Yield DP 1538 B2XF 698 DP 1522 B2XF 692 PHY 333 WRF 684 ST 4946 GLB2 669 PHY 444 WRF 663 PHY 495 W3RF 651 DG 3385 B2XF 646 ST 4747 GLB2 612 NG 3406 B2XF 599 NG 3405 B2XF 584

18 Piedmont 2 Trials Variety AVG Yield PHY 333 WRF 1083 ST 4946 GLB DP 1522 B2XF 1014 DG 3385 B2XF 1005 NG 3406 B2XF 968 DP 1538 B2XF 966 NG 3405 B2XF 926 PHY 495 W3RF 924 PHY 444 WRF 902 ST 4747 GLB2 827

19 NCSU OVT 2-YEAR Statistically highest group

20 NC On-Farm Trials (Fiber Quality) Variety DP 1538 B2XF ST 4946 GLB2 DP 1522 B2XF PHY 495 W3RF PHY 333 WRF PHY 444 WRF DG 3385 B2XF NG 3405 B2XF ST 4747 GLB2 NG 3406 B2XF Combined AVG Yield Lint % Micronaire Length Strength Uniformity Color Grade Leaf Grade

21 NC On-Farm Trials (Fiber Quality) Variety Average Micronaire % High MIC DP DG ST DP NG PHY PHY ST NG PHY Variety Average Length % Short Staple PHY ST PHY ST DP DG NG DP PHY NG Variety % High MIC & Short Staple DP PHY NG DG NG DP PHY ST ST PHY 444 0

22 NC Cotton Variety Performance Calculator

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39 Resources for You Cotton Portal Website: NC Variety Calculator: SeedMatrix.com: Facebook: North Carolina Cotton facebook.com/groups/ Twitter: List: NCSU Cotton Keith Guy Dominic

40 Thank You