Yield, Fiber Quality and Potassium Content of Irrigated Cotton Plants as Affected by Rates of Potassium1

Synopsis Potassium applications increased yield of seed cotton, size of bolls, and fiber micronaire values, but decreased lint percentage. K content of plants increased in proportion to rate of K applied. Old leaves plus perioles gave the best indication of the K status of the plant. Fiber quality was best at lower rates of K.