Integrated nutrient management in cotton-sunflower cropping system in the sandy loam soils of north India

K. Mahavishnan, Mangal Prasad, K. Bhanu Rekha


Two sets of field experiments were conducted during kharif and rabi seasons of 2002-’03 and 2003-’04 at New Delhi under irrigated conditions to formulate site-specific nutrient management strategies for cotton-sunflower cropping system. The kharif experiments on cotton consisted of eight treatments viz., 100% recommended dose of fertilizers (RDF; 60:30:30 N, P2O5 and K2O kg ha-1), 50% RDF, mung bean intercrop incorporation (MII), farm yard manure (FYM; 12 t ha-1), 50% RDF+MII, 50% RDF+FYM, 50% RDF+FYM+MII and control, and it was laid out in a randomized block design with three replications. For the succeeding sunflower crop (rabi), each cotton plot was subdivided into three, and 0, 50 and 100% RDF were applied adopting a split plot design. Highest values for seed cotton yield and NPK uptake were observed for the combined application of all three nutrient sources. Nutrient management of cotton also exerted a marked effect on seed yield and NPK uptake of the succeeding sunflower crop. However, direct application to sunflower had a more pronounced effect than the residual effects.


Mung bean incorporation; nutrient uptake; residual fertility

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A KAU publication [CODEN: JTAGEI; ISSN 0971-636X; eISSN 0973-5399]