Potassium deficiency syndrome of cotton
California Agriculture 40(9):13-14. DOI: 10.3733/ca.v040n09p13.
Bill L. Weir is Farm Advisor, Merced County; Thomas A. Kerby is Agronomist, University of California Cooperative Extension, USDA Cotton Research Station, Shatter; Bruce A. Roberts is Farm Advisor, Kings County; Duane S. Mikkelsen is Professor of Agronomy, Department of Agronomy and Range Science, UC Davis; Richard H. Garber is Plant Pathologist, USDA Cotton Research Station, Shatter.
Symptoms occur despite seemingly adequate soil levels