Prevention of phosphorus deficiency in maize

Phosphorus is one of the most critical nutrients for maize production. Its deficiency results in reduced yields and is common in soils in many parts of Malawi. Symptoms of phosphorus deficiency are that young plants look dwarfed and thin with dark green leaves. Leaf margins, veins and stems show purple tints which may spread over the whole leaf blade. Phosphorus deficiency is also manifested by reddish discoloration at juvenile stages of growth.

Phosphorus helps the maize crop plant to better establish itself, get good development, hasten maturity stage, prevent harvest losses, and improve the overall maize yield. Its deficiency in soil therefore results in catastrophic consequences. Its deficiency is among others exacerbated by acidic or very alkaline conditions, low organic matter, cold or wet conditions and soils with low phosphorus reserves.

Phosphorus deficiency can be managed by applying the following: