Comparative efficiency of three organic manures at varying rates of its application to baby corn

Abstract

The management of a fast-growing crop like baby corn under organic condition is poorly understood and related information is meager. We conducted field trials in the northwestern Himalayas of India during two seasons (2004 – 2005) to determine the effects of three organic manures on protein and mineral constituents of baby corn, yield attributes, cob and fodder yield. Farmyard manure, vermicompost and poultry manure were applied each at two different rates. Plots receiving chemical fertilizers produced significantly higher baby corn yield compared to organic treatments. Among the organic manures, farmyard manure at 15 Mg ha−1 gave the highest baby corn yield. Baby corn grown under inorganic management was richer in protein, iron (Fe), phosphorous (P) and manganese (Mn) content. The protein content in baby corn, however, did not differ significantly among the treatments involving organic manures. Application of vermicompost contributed more to concentration of iron, zinc and manganese in baby corn, whereas, total P content was more due to application of poultry manure. Nitrogen (N) input, irrespective of sources, was highly correlated with baby corn yield. We conclude that not only quality but also quantity of nutrient source are important for better nutritional quality and yield of organically grown short duration crop like baby corn.