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"Evaluation of Yield And Fiber Trait Responses Across Irrigation Treatments"

"Evaluation of Yield And Fiber Trait Responses Across Irrigation Treatments". Carol Mason Kelly. Objectives. To evaluate the lint yield and fiber quality of 72 different genotypes across three different irrigation levels

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"Evaluation of Yield And Fiber Trait Responses Across Irrigation Treatments"

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  1. "Evaluation of Yield And Fiber Trait Responses Across Irrigation Treatments" Carol Mason Kelly

  2. Objectives • To evaluate the lint yield and fiber quality of 72 different genotypes across three different irrigation levels • To examine any trends that might have occurred, either within an environment or across environments.

  3. Objectives • To focus on the adaptability of genotype performance as it is affected by water availability. • To gain valuable knowledge that can be used as groundwork for future studies with similar interests.

  4. Experimental Design • 3- Randomized Complete Block Designs. • 4 replications • 3 Irrigation Levels: • .1 in./day, .2 in./day, .3 in./day • Drip irrigation

  5. Experimental Design • 72 genotypes: • 60 Experimental & 12 Commercial • 2 Years of data: Yield and Fiber • (HVI & AFIS)

  6. Important Dates 2003: Planted on May 19th First Hard Freeze on November 23rd (set record for latest) Harvested December 18th – 21st 2004: Planted on May 27th First Hard Freeze on November 3rd Harvested December 20th & January 21st

  7. Things to Consider • Climatic Differences between years • Stability and the controversies • For this study - adaptability • Preliminary design of the study • Advantages • Limitations

  8. Annual Rainfall

  9. Cumulative Heat Units

  10. Results

  11. Production

  12. Lint Yield

  13. Trends

  14. 1600 1400 1200 1000 Irrigation Treatment 800 600 High Medium Low 400 1 11 21 31 41 51 61 71 1 11 21 31 41 51 61 71 6 16 26 36 46 56 66 6 16 26 36 46 56 66 Lint Yield 2003 2004 Lbs. Entry Entry

  15. 1600 1400 1200 Irrigation Treatment 1000 800 High Medium Low 600 400 200 4 10 22 27 31 65 67 71 4 10 22 27 31 65 67 71 Entry Entry Lint Yield 2003 2004 Lbs.

  16. 1600 High Medium Low 1400 1200 1000 Irrigation Treatment Lbs. 800 600 High Medium Low 400 200 4 10 22 27 31 65 67 71 Entry 2003 Lint Yield Irrigation Treatment

  17. 1600 1400 1200 1000 Irrigation Treatment Lbs. 800 600 High Medium Low 400 200 4 10 22 27 31 65 67 71 Entry 2004 Lint Yield

  18. 5.5 5.0 4.5 4.0 3.5 3.0 High Medium Low Irrigation Treatment 2.5 2.0 4 10 22 27 31 65 67 71 4 10 22 27 31 65 67 71 Entry Entry Micronaire 2003 2004 Micronaire

  19. 1.02 1.00 0.98 0.96 0.94 0.92 0.90 0.88 0.86 High Medium Low 0.84 Irrigation Treatment 0.82 0.80 0.78 4 10 22 27 31 65 67 71 4 10 22 27 31 65 67 71 Entry Entry Fiber Maturity 2003 2004 Maturity

  20. 195 190 185 180 175 170 High Medium Low Irrigation Treatment 165 160 4 10 22 27 31 65 67 71 4 10 22 27 31 65 67 71 Entry Entry Standard Fineness 2003 2004 Hs

  21. 1.35 1.30 1.25 1.20 1.15 1.10 High Medium Low Irrigation Treatment 1.05 1.00 4 10 22 27 31 65 67 71 4 10 22 27 31 65 67 71 Entry Entry Upper Half Mean Length 2003 2004 UHML

  22. 1.05 1.00 0.95 0.90 0.85 High Medium Low Irrigation Treatment 0.80 0.75 4 10 22 27 31 65 67 71 4 10 22 27 31 65 67 71 Entry Entry Length (n) 2003 2004 LN

  23. 26 24 22 20 18 16 14 High Medium Low 12 Irrigation Treatment 10 8 4 10 22 27 31 65 67 71 4 10 22 27 31 65 67 71 Entry Entry Short Fiber Content by number 2003 2004 SFC (n)

  24. 38 36 34 32 30 28 High Medium Low 26 Irrigation Treatment 24 22 4 10 22 27 31 65 67 71 4 10 22 27 31 65 67 71 Entry Entry Strength 2003 2004 Strength

  25. 9.0 8.5 8.0 7.5 7.0 6.5 6.0 5.5 5.0 4.5 High Medium Low 4.0 3.5 Irrigation Treatment 3.0 2.5 4 10 22 27 31 65 67 71 4 10 22 27 31 65 67 71 Entry Entry Elongation 2003 2004 Elongation

  26. Conclusions • There are strong interactions between genotypes and the environment • Environmental affect varied among genotypes • The presence of such a strong interaction should be accounted for in breeding programs

  27. Conclusions • Trends were somewhat unpredictable • Choosing an environment for selections is important yet EXTREMELY challenging • One single environment should not be used for selections.

  28. Questions

  29. If I were to do it again...... • Base irrigation levels on estimated ETs • 25%, 50%, and 75% • Fewer number of entries • 20 - 30 • More than one location • at least 2 maybe 3 • Included a rain fed treatment • having a dry-land component would be very beneficial • Expect the Unexpected!

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