Author(s): P. PATI AND P. K. MAHAPATRA

Abstract: Field experiment was conducted at the Central Research Station, Orissa University of Agriculture and Technology, Bhubaneswar (Odisha) during the consecutive two rabi seasons of 2010 and 2011 to study the effect of integrated nutrient management on yield performance and nutrient uptake of mustard [Brassica juncea (L.) Czern and Coss]. Experiment was laid out in a randomized block design, consisting eleven treatments viz., T - RDF (N : P O : K O @ 60 : 30 : 30 kg ha-1), T - RDF + S (40 kg ha-1), T - RDF + B (1 kg ha-1), T - RDF + lime (0.2 LR), T - RDF + Zn-EDTA(0.5 kg ha-1 as foliar spray), T - 75% RDF, T - 75% RDF + FYM (5 t ha-1), T - 75% RDF + FYM (5 t ha-1) + S (40 kg ha-1), T - 75% RDF + FYM (5 t ha-1) + B (1 kg ha-1), T -75% RDF + FYM (5 t ha-1) + lime (0.2 LR), T - 75% RDF + FYM (5 t ha-1) + Zn-EDTA (0.5 kg ha-1as foliar spray), respectively replicated thrice. The soil was loamy sand in texture with pH 5.5, low in organic carbon and nitrogen, high in phosphorus and medium in potash. The results reveal that the treatment (T ), which received 75 % RDF + FYM @ 5 t ha-1 + lime (0.2 LR) produced maximum number of effective siliqua (226 plant-1), longest siliqua (4.4 cm), seeds siliqua-1(14.1), 1000 seed weight (4.35 g), highest seed and stover yield (1423 and 2759 kg ha-1), respectively. Reduction of 25% fertilizer from the recommended dose (RDF) produced minimum yield of 973 kg ha-1which was 8% less than RDF. The treatment (T ) also absorbed 72 kg N, 13 kg P, 34 kg K, 17 kg S, 124 g B, 163 g Zn and 42 kg Ca ha-1. So sound agronomic and environmentally acceptable integrated nutrient management practices are essential to achieve a reduction in fertilizer derived environmental risk while increasing the net return and crop productivity through nutrient use efficiency.

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