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Integrated Nutrient Management in Relation to Soil Fertility and Yield Sustainability under Wheat-Mung-T.aman Cropping Pattern

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Author(s): M. Q. Haque | M.H. Rahman | Fokhrul Islam | Jan Rijpma | M.M. Kadir

Journal: Journal of Biological Sciences
ISSN 1727-3048

Volume: 1;
Issue: 8;
Start page: 731;
Date: 2001;
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Keywords: Nurrient management | yield | sustainability | cropping pattern

ABSTRACT
A field experiment was conducted to study the effect of continued fertilizer, organic manure and mungbean residues on soil properties and yield of crops. The grain and straw yield of wheat, mungbean and T.aman were significantly influenced by different treatment combinations of organic and inorganic fertilizations. The highest average grain yield of Wheat var. Kanchan was 4.92 t ha-1 in the treatment T4 (N125, P25, K85, S25, Zn5, Mg20 and B2 kg ha-1). For mungbean (var. Binamoog-2) the highest grain yield of 1.06 t ha-1 was obtained with inoculum + (P10, K12 and S4 kg ha-1). The yield of T.aman (var. BRRI Dhan-32) was significantly increased when inorganic fertilizers were applied along with incorporation of mungbean stover. The highest average grain yield of rice 5.81 t ha-1 was recorded with N105, P16, K60 and S8 kg ha-1 + mungbean stover. The residual effect of cowdung and incorporation of mungbean straw as brown manure along with inorganic fertilizer was distinct. Economics of the fertilizer uses of the total products of two cropping cycles demonstrated that the highest net benefit of US $ 1998 ha-1 was obtained from treatment T3.3 (inorganic fertilizer for moderate yield + cowdung). There was no remarkable change in post harvest soil status during the period of study. However, there were considerable increase in available P but in case of K, the amount of K removed far exceeded that replenished through fertilization.
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