Phosphorus Deficiency

Phosphorous deficiency Common name Phosphorous deficiency Causal agent It is a non-pathological disorder caused by a nutritional deficiency of phosphorus in plants. It can be due to low phosphorus in the soil, decreased acidity, dry soil conditions, and cold temperatures. Symptoms & Signs The lower leaves show red or purple variegation around their margins. The leaves also turn dark, dull, and pale, especially the older, mature leaves. It prevents shoot growth which leads to an increased root-to-shoot ratio. The leaves are small, stiff, and curled. Time of concern Throughout the year Common hosts Corn Barley Oats Wheat Soybean Cotton Canola Alfalfa