As cotton moves through the growing season, maintaining adequate potassium levels is critical for reducing plant stress and protecting yield potential. According to Gabe Saxon, Regional Agronomist with AgroLiquid, growers should focus on preventing potassium deficiencies rather than reacting to them after symptoms appear.
“Potassium management in cotton needs to be proactive,” Saxon said. “We need to make sure that we’re paying attention to what we’re doing early season so we can mitigate stress before we hit deficiency symptoms.”
Saxon recommends beginning every fertility program with a quality soil test to determine existing nutrient levels. While foliar nutrition can be an effective tool during the season, he said timing is critical and should be supported by regular monitoring through tissue, petiole or sap sampling to better understand the crop’s nutrient needs.
Rather than waiting for visible signs of deficiency, Saxon encourages growers to monitor nutrient status throughout the season and make timely adjustments when needed. Taking a proactive approach can help maintain plant health during periods of stress while supporting more consistent production.
He added that evaluating a fertilizer program should go beyond whether a product works in a single situation.
“The question is not just whether your treatment can work; the question is whether it works consistently enough,” Saxon said. “We’re finding that if we are chasing potassium, calcium and boron throughout the season, we’re getting better yields in the end.”
By combining soil testing with in-season crop monitoring and timely nutrient applications, growers can make more informed fertility decisions and improve the consistency of their cotton production from year to year.