High Temperature and Cotton Yield Department of Crop and Soil Sciences

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Presentation transcript:

High Temperature and Cotton Yield Department of Crop and Soil Sciences John Snider University of Georgia Department of Crop and Soil Sciences

Yield-Determining Factors Genotype Management Environment

2016 vs. Other Years Year Average Tmin Average Tmax Highest Tmin Highest Tmax No. Days Tmin > 22°C Tmax > 32°C Yield (lbs/acre) 2013 20.9 30.9 24.0 35.1 29 45 1496 2014 21.3 32.1 24.3 36.8 52 75 2058 2016 21.6 32.7 35.9 66 88 867

Yield Components

Yield Components Lint Yield = Boll #/Acre × Seed #/Boll x Lint Weight/Seed

Yield Components Lint Yield = Boll #/Acre × Seed #/Boll x Lint Weight/Seed

Yield Components Lint Yield = Boll #/Acre × Seed #/Boll x Lint Weight/Seed

Anthesis 35 DAP 60 DAP Ritchie et al., 2008

Squaring and Flowering 35 DAP 60 DAP Ritchie et al., 2008

Yield Components Lint Yield = Boll #/Acre × Seed #/Boll x Lint Weight/Seed

Fiber Development [0 DPA] Fiber Cell Initiation [0 to 20 DPA] Fiber Elongation [15 to 45 DPA] Fiber Thickening Fiber Thickening Fiber Maturation [45-50 DPA]

Thank You