Long-term effects of organic inputs on yield and soil fertility in the rice-wheat rotation von Yadvinder-Singh, Bijay-Singh, Ladha, J.K, Khind, C.S, Gupta, R.K, Meelu, O.P, Pasuquin, E

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Effect of organic manures, crop residues and green manure (Sesbania aculeata) on nitrogen and phosphorus transformations in a sandy loam at field capacity and under waterlogged con... von YADVINDER-SINGH, BIJAY-SINGH, MASKINA, M. S, MEELU, O. P

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The value of poultry manure for wetland rice grown in rotation with wheat von Singh, B. (Punjab Agricultural Univ., Ludhiana (India). Dept. of Soils), Singh, Y, Maskina, M.S, Meelu, O.P

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Leaching losses of urea-N applied to permeable soils under lowland rice von Bijay-Singh, Yadvinder-Singh, Khind, C. S., Meelu, O. P.

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Influence of paddy and corn in different rotations on wheat yield, nutrient removal and soil properties von Meelu, O.P, Beri, V, Sharma, K.N, Jalota, S.K, Sandhu, B.S

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Lysimeter studies on recovery of 15N-labeled urea in wetland rice von Rekhi, R.S, Meelu, O.P, Gupta, R.K

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Fertilizer requirement of rice-wheat and maize-wheat rotations on coarse-textured soils amended with farmyard manure von Maskina, M. S., Bijay-Singh, Yadvinder-Singh, Baddesha, H. S., Meelu, O. P.

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