NPK and pH in the SW Cotton Belt​

January 2021 | 18 min., 42 sec.
by Brian Arnall
Oklahoma State University

Summary

​With new genetics and management, acres of cotton have significantly increased across the Southern and Central Plains. Much of this increase has occurred in areas in which cotton was not traditionally grown. With this expansion, producers have encountered challenges such as soil acidity, high residual N following irrigated corn, and potassium deficiency on high soil test K fields. This presentation discusses some of the ongoing work in cotton fertility at Oklahoma State University.

About the Presenter

Brian ArnallBrian Arnall is a precision nutrient management Extension specialist for Oklahoma State University. He has served in that role since earning his doctorate in soil science from Oklahoma State University in 2008. Brian's Extension, teaching, and research efforts are focused on precision technologies and nutrient management in all of Oklahoma's cropping systems, with an emphasis on site-specific techniques. He works closely with Extension educators and industry personnel to improve nutrient management practices among Oklahom​a producers that will lead to increased profitability. Ongoing studies are focused on developing methods to use sensor-based technologies, improving the timing and placement of nitrogen fertilizer, increasing nutrient use efficiency, and improving recommendations for phosphorus fertilizer. In addition, Brian has a crew of developers producing iOS and Android applications.

Contact Information:
Email: b.arnall@okstate.edu

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