Saturday, 15 July 2006

Effect of Integrated Nutrient Management on the Availability of N, P, K and Cationic Micronutrients in Soils Growing Cabbage (Brassica oleracia var. Capitata L.).

Pintu Sur and Dilip Kumar Das. Dept of Ag. Chem. & Soil Science, Bidhan Chandra Krishi Viswavidyalaya, B-5/50, Kalyani, Diagonal Road, Kalyani, 741 235, India

A field experiment was conducted in a Haplaquept soil (pH, 7.70; organic carbon, 0.58 %) to study the effect of Integrated Nutrient Management (INM) on the availability of N, P, K and cationic micronutrients in soils in relation to Cabbage (Brassica oleracea var. Capitata L.) cv. Green Express under different treatment combinations. The overall results show that the adoption of integrated nutrient management practices helped to build up of soil nutrient status with respect to N, P, K, Fe, Mn, Cu and Zn contents. The results suggested that the treatment receiving recommended levels of N, P and K, 4 t ha-1 organic manures and 0.5 kg ha-1 Zn as Zn-EDTA was proved superior in augmenting soil fertility. However, the highest organic carbon content (0.88%) was observed in treatment where 4 t ha-1 organic manure was applied along with recommended levels of NPK and zinc at 0.5 kg ha-1. The results further concluded that the amount of cationic micronutrients (Fe, Mn, Cu and Zn) in soil have been found to be increased with treatments where OM at 4 t ha-1 + Zn at 0.5kg ha-1as Zn-EDTA and OM at 10 t ha-1 + Zn at 0.5kg ha-1+ NPK as basal were applied respectively. Key words: Availability, INM, cabbage, nutrients.

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