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Experience with Managing Rice Residues in Intensive Rice-Wheat Cropping System in North- Western India

R. K. Naresh1, S. P. Singh 2, Deepesh Kumar 1, and Bhanu Pratap 1
1. Department of Agronomy, Sardar Vallabhbhai Patel University of Agricultuere & Technology, Meerut, UP, India.
2. Department of Soil Science, Sardar Vallabhbhai Patel University of Agricultuere & Technology, Meerut, UP, India.
Abstract—Rice-wheat (RW) is the dominant cropping system in North-Western India and is of immense importance for national food security. However, the sustainability of the RW system is threatened by water shortage and nutrient mining. A field experiment was conducted over 02 years in Sardar Vallabhbhai Patel University of Agriculture & Technology, Meerut, U.P., India, to compare conventional and Zero Till drill RW cropping systems, with and without retention of crop residues, in terms of crop performance and nitrogen use efficiency (NUE). The experiment investigated N management for wheat mulched with rice straw. There were eight Nmanagement treatments for the wheat mulched with rice straw, including the recommended practice (2/3 broadcast before sowing,1/3 broadcast before the first irrigation after sowing). There was also an unmulched control treatment with N applied using recommended practice. Fertiliser application with three split doses (50% drilled at sowing + 25% broadcast before the each of the first and second irrigations) resulted in significantly higher grain yield,agronomic efficiency and N recovery efficiency than all other treatments.In the presence of mulch,drilling the urea at sowing gave higher yields and efficiency than broadcasting. Zero Till drill for RW seem to have limited potential under the soil and climatic conditions of Western Uttar Pradesh, India,with current technology, even with full residue retention for both crops. Further research on Zero Till drill should focus on selection of rice and wheat cultivars;soil health issues such as nematodes and iron deficiency; weed control; N,water and residue management; and machinery development and practices.

Index Terms—Productivity enhancement, Cropping systems, Sustainability, Tillage

Cite: R. K. Naresh, S. P. Singh, Deepesh Kumar, and Bhanu Pratap, "Experience with Managing Rice Residues in Intensive Rice-Wheat Cropping System in North- Western India," International Journal of Life Sciences Biotechnology and Pharma Research, Vol. 2, No. 2, pp. 85-96, April 2013.
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