Efffects of heat stress on Arizona low-desert cotton production

Randy Norton
Randy Norton

University of Arizona Extension cotton specialist Randy Norton discusses the “Effects of Heat Stress on Cotton Production in the Low Deserts of Arizona​” in this 26-minute educational presentation.

High-temperature trends in the low desert of Arizona can have a severe negative impact on cotton production. Heat stress indices have been developed for tracking the effects on cotton fruiting patterns and ultimately yields. The current research evaluates the effects of level two heat stress (L2: crop canopy temperature above 86 degrees Fahrenheit) on flower formation, pollen shed, fruit retention and distribution, and yield.

The overall objective of the current work is to develop a set of infield measurements that can accurately describe the heat tolerance level of a given variety of cotton.​

To view the full webcast, click here.

Norton’s research is sponsored by Cotton Incorporated. The presentation is part of Grow: Plant Health Exchange, formerly the Plant Management Network. It is hosted by the American Phytopathological Society.

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