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Pre-Bloom Irrigation in Cotton

Cotton-Irrigation 007

Although irrigation requirement is higher for blooming cotton than for pre-bloom cotton, stressing cotton during squaring has more negative effects than we realize. Cotton does not rebound if stressed fromĀ no irrigation through squaring. UGA Extension Cotton Agronomist Dr. Jared Whitaker conducted research on thisĀ using the UGA Checkbook Method where the pre-bloom irrigation was eliminated and they had no difference in non-irrigated cotton. The reason for this is that cotton grows vegetatively and reproductively at the same time. During its vegetative growth, cotton is setting nodes. If it is stressed during this time, less nodes are set. Below is a graph showing the research and UGA Checkbook Method.

ImpactofPre-BloomIrrigation-J.Whitaker-2012

UGACheckbookMethod