Potassium Deficiency of Solanaceous Crops
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Potassium deficiency often is associated with yellowing of the margins of the lower leaves. Potassium deficiencies are also associated with blotchy ripening in tomato fruit. Foliar testing can provide the status of potassium in plants. Be sure to follow the sampling instructions of the lab where you plan to send the foliar samples. You can also check the potassium status yourself using a Cardy Meter.
Potassium deficiency.
(Photo: UK Vegetable IPM Team)
