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Nutrient Management

Organic nutrient management

The crop being exhaustive in nature requires balanced supply of all the essential plant nutrients for proper growth, development and yield. Manures, vermicompost, biofertilizers and different cakes play important role in organic maize production for supplementation of nutrition. Apart from that green manuring [Crotolaria juncea (sunnhemp),

Sesbania aculeata (dhaincha)] and green leaf manuring [Leuceana leucocephala (subabul), Tephrosia] could be another alternative for nutrient supplementation in organic production system. Maize requires a regulated and assured supply of nutrients particularly N throughout its growing period right from seedling stage to grain filling stage. ICAR Sikkim Centre recommended application of dolomite @ 2 t/ha+ mixed compost @ 2.5 t/ha + neem cake @ 0.5 t/ha + vermicompost @ 2.5 t/ha for meeting the demand of the crop for higher productivity of maize (4.68 t/ha). Similarly, ICAR Barapani recommends application of well-decomposed FYM @ 15 t/ha applied 20 days before planting along with 150 kg rock phosphate. Neem cake can also be added @ 150 kg/ha to the field for effective control of soil-borne insect pests. Application of FYM @ 10-15 t/ha + vermicompost @ 2.5 - 5.0 t/ha either alone or in combination as basal dose will also meet the nutrient needs .