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Rice yield gaps and nitrogen-use efficiency in the Northwestern Indo-Gangetic Plains of India: evidence based insights from heterogeneous farmers’ practices

Creator: Hari S. Nayak
Creator: Silva, J.V.
Creator: Parihar, C.M.
Creator: Kakraliya Suresh Kumar
Creator: Krupnik, T.J.
Creator: Bijarniya, D.
Creator: Jat, M.L.
Creator: Sharma, P.C.
Creator: Jat, H.S.
Creator: Sidhu, H.S.
Creator: Sapkota, T.B.
Year: 2022
Language: English
Publisher: Elsevier
Copyright: CIMMYT manages Intellectual Assets as International Public Goods. The user is free to download, print, store and share this work. In case you want to translate or create any other derivative work and share or distribute such translation/derivative work, please contact indicating the work you want to use and the kind of use you intend; CIMMYT will contact you with the suitable license for that purpose
Type: Article
Place of Publication: Amsterdam (Netherlands)
Volume: 275
DOI: 10.1016/j.fcr.2021.108328
Keywords: Big Data
Keywords: Stochastic Frontier Analysis
Keywords: Global Yield Gap Atlas
Keywords: Fertilizer Management
Keywords: Sustainability Assessment
Description: A large database of individual farmer field data (n = 4,107) for rice production in the Northwestern Indo-Gangetic Plains of India was used to decompose rice yield gaps and to investigate the scope to reduce nitrogen (N) inputs without compromising yields. Stochastic frontier analysis was used to disentangle efficiency and resource yield gaps, whereas data on rice yield potential in the region were retrieved from the Global Yield Gap Atlas to estimate the technology yield gap. Rice yield gaps were small (ca. 2.7 t ha−1, or 20% of potential yield, Yp) and mostly attributed to the technology yield gap (ca. 1.8 t ha−1, or ca. 15% of Yp). Efficiency and resource yield gaps were negligible (less than 5% of Yp in most districts). Small yield gaps were associated with high input use, particularly irrigation water and N, for which small yield responses were observed. N partial factor productivity (PFP-N) was 45–50 kg grain kg−1 N for fields with efficient N management and approximately 20% lower for the fields with inefficient N management. Improving PFP-N appears to be best achieved through better matching of N rates to the variety types cultivated and by adjusting the amount of urea applied in the 3rd split in correspondance with the amount of diammonium-phosphate applied earlier in the season. Future studies should assess the potential to reduce irrigation water without compromising rice yield and to broaden the assessment presented here to other indicators and at the cropping systems level.
Agrovoc: DATA
Agrovoc: YIELD GAP
Related Datasets:
ISSN: 0378-4290
Journal: Field Crops Research
Article number: 108328

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  • Sustainable Intensification
    Sustainable intensification agriculture including topics on cropping systems, agronomy, soil, mechanization, precision agriculture, etc.

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