May 18, 2017
Drought and Potassium Deficiency in Corn and Soybean
Since potassium is mobile in plants, yellowing along leaf margins starts in the lower leaves and progress toward the top. In plants, potassium activates as many as 60 enzymatic and plant hormonal reactions, regulating many physiological and biochemical processes. Potassium also regulates the opening and closing of leaf stomates responsible for water and gas exchange. Therefore, adequate potassium levels are needed to keep plants from being susceptible to drought.
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