What Causes Potassium Deficiency in Peanuts? Detailed Guide to Symptom Identification and Remedies
What is potassium deficiency in peanuts? How should it be prevented and treated? Please advise: when peanuts are deficient in potassium, the edges of the lower leaves turn yellow, the mesophyll between the veins becomes chlorotic, and eventually the leaves become necrotic. The necrotic leaf spots first appear at the leaf margins and gradually spread inward until the leaves drop, with the top leaves affected last. Before symptoms appear, the plant's growth slows down....
What is potassium deficiency in peanuts? How should it be prevented and treated? Please advise
When peanuts are deficient in potassium, the edges of the lower leaves turn yellow, the mesophyll between the veins becomes chlorotic, and eventually the leaves become necrotic. The necrotic leaf spots first appear at the leaf margins and gradually spread inward until the leaves drop, with the top leaves affected last. Before symptoms appear, the plant's growth slows down.
Prevention and control measures: apply potassium fertilizer together with lime or gypsum, because applying potassium fertilizer to calcium-deficient soil is ineffective or has the opposite result. When potassium deficiency is found in the field, potassium oxide or potassium chloride can be applied as a foliar top dressing, at 0.3-0.5 kg per mu.
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