Effect of wheat straw incorporation on yield of green gram and wheat, soil fertility and microbiota
2000
Surya, J.N. | Puranik, R.B. | Zadode, S.D. | Deshmukh, S.D. (Dr. Punjabrao Deshmukh Krishi Vidhyapeeth, Akola (India)).
A field experiment was conducted on Entisols with green gram-wheat sequence, using biogas slurry treated wheat straw in kharif and various fertilizer level with a view to study their effects on corp yields, soil fertility and microbiota. Yield of green gram increased with fertiliser levels. Incorporation of wheat straq @ 3 and 6 mt ha-1 significantly increased grain yield of green gram (10-19%) over control. NPK uptake by green gram increased due to fertilizer levels and incorporation of wheat straw. Application of 80:40:40 kg N, P2O5 and K2O to wheat corp gave highest grain yield (31.06 q ha-1). However, wheat straw incroporation showed better residual effect in tenns of yield ol wheat and nutrient uptake. Increasing levels of fertiliser applied to wheat crop enhanced N.P. and K uptake by 1.7-2.7, 1.9-3.1 and 1.8-3 folds, respectively over control. Organic C status was markedly improved due to incorporation of wheat straw @ 6 mt ha-1, Build up in available NPK content was observed in treatments receiving fertiliser and wheat straw after harvest of wheat crop. Microbial population increased tremendously by incorporation of wheat straw at 30 DAS of green gram. Thus, corp residue can be gainfully utilized by incorporation into soil resulting in improvement of soil fertility, microbiota and crop yields.
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