Rice yield gaps and nitrogen-use efficiency in the Northwestern Indo-Gangetic Plains of India: Evidence based insights from heterogeneous farmers’ practices
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 di...
| Autores principales: | , , , , , , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Elsevier
2022
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/126860 |
| _version_ | 1855520868318314496 |
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| author | Nayak, Harisankar Silva, João Vasco Parihar, Chiter Mal Kakraliya, S. Krupnik, Timothy J. Bijarniya, Deepak Jat, Mangi Lal Sharma, Parbodh Chander Jat, Hanuman Sahay Sidhu, Harminder Singh Sapkota, Tek Bahadur |
| author_browse | Bijarniya, Deepak Jat, Hanuman Sahay Jat, Mangi Lal Kakraliya, S. Krupnik, Timothy J. Nayak, Harisankar Parihar, Chiter Mal Sapkota, Tek Bahadur Sharma, Parbodh Chander Sidhu, Harminder Singh Silva, João Vasco |
| author_facet | Nayak, Harisankar Silva, João Vasco Parihar, Chiter Mal Kakraliya, S. Krupnik, Timothy J. Bijarniya, Deepak Jat, Mangi Lal Sharma, Parbodh Chander Jat, Hanuman Sahay Sidhu, Harminder Singh Sapkota, Tek Bahadur |
| author_sort | Nayak, Harisankar |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| 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. |
| format | Journal Article |
| id | CGSpace126860 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2022 |
| publishDateRange | 2022 |
| publishDateSort | 2022 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | CGSpace1268602026-01-16T10:10:43Z Rice yield gaps and nitrogen-use efficiency in the Northwestern Indo-Gangetic Plains of India: Evidence based insights from heterogeneous farmers’ practices Nayak, Harisankar Silva, João Vasco Parihar, Chiter Mal Kakraliya, S. Krupnik, Timothy J. Bijarniya, Deepak Jat, Mangi Lal Sharma, Parbodh Chander Jat, Hanuman Sahay Sidhu, Harminder Singh Sapkota, Tek Bahadur data stochastic models yield gap fertilizers sustainability 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. 2022-01 2023-01-11T14:33:03Z 2023-01-11T14:33:03Z Journal Article https://hdl.handle.net/10568/126860 en Open Access application/pdf Elsevier Nayak, H. S., Silva, J. V., Parihar, C. M., Kakraliya, S. K., Krupnik, T. J., Bijarniya, D., Jat, M. L., Sharma, P. C., Jat, H. S., Sidhu, H. S., & Sapkota, T. B. (2022). Rice yield gaps and nitrogen-use efficiency in the Northwestern Indo-Gangetic Plains of India: Evidence based insights from heterogeneous farmers’ practices. Field Crops Research, 275, 108328. https://doi.org/10.1016/j.fcr.2021.108328 |
| spellingShingle | data stochastic models yield gap fertilizers sustainability Nayak, Harisankar Silva, João Vasco Parihar, Chiter Mal Kakraliya, S. Krupnik, Timothy J. Bijarniya, Deepak Jat, Mangi Lal Sharma, Parbodh Chander Jat, Hanuman Sahay Sidhu, Harminder Singh Sapkota, Tek Bahadur Rice yield gaps and nitrogen-use efficiency in the Northwestern Indo-Gangetic Plains of India: Evidence based insights from heterogeneous farmers’ practices |
| title | Rice yield gaps and nitrogen-use efficiency in the Northwestern Indo-Gangetic Plains of India: Evidence based insights from heterogeneous farmers’ practices |
| title_full | Rice yield gaps and nitrogen-use efficiency in the Northwestern Indo-Gangetic Plains of India: Evidence based insights from heterogeneous farmers’ practices |
| title_fullStr | Rice yield gaps and nitrogen-use efficiency in the Northwestern Indo-Gangetic Plains of India: Evidence based insights from heterogeneous farmers’ practices |
| title_full_unstemmed | Rice yield gaps and nitrogen-use efficiency in the Northwestern Indo-Gangetic Plains of India: Evidence based insights from heterogeneous farmers’ practices |
| title_short | Rice yield gaps and nitrogen-use efficiency in the Northwestern Indo-Gangetic Plains of India: Evidence based insights from heterogeneous farmers’ practices |
| title_sort | rice yield gaps and nitrogen use efficiency in the northwestern indo gangetic plains of india evidence based insights from heterogeneous farmers practices |
| topic | data stochastic models yield gap fertilizers sustainability |
| url | https://hdl.handle.net/10568/126860 |
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