Singh, P and Vijaya, D and Chinh, N T and Pongkanjana, A and Prasad, K S and Srinivas, K and Wani, S P (2001) Potential Productivity and Yield Gap of Selected Crops in the Rainfed Regions of India, Thailand, and Vietnam: Natural Resource Management Program Report no. 5. Monograph. International Crops Research Institute for the Semi-Arid Tropics , Patancheru, Andhra Pradesh, India.
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This study is a part of the research project “Improving Management of Natural Resources for Sustainable Rainfed Agriculture” supported by the Asian Development Bank (ADB) through RETA # 5812. In each country multidisciplinary teams of scientists are involved in undertaking the project work and direct or indirect help of all the team members is gratefully acknowledged. We acknowledge the help of Drs S Narongsak, T D Long, S M Virmani, H P Singh, A Ramakrishna, and T J Rego for facilitating the work covered in this report. Financial support provided by the ADB through RETA # 5812 is gratefully acknowledged. We are also thankful to Mr P Rama Krishna for typing and formatting the manuscript.
Abstract
ICRISAT’s intervention in the project “Improving Management of Natural Resources for Sustainable Rainfed Agriculture” funded by the Asian Development Bank aims to increase the productivity and sustainability of the medium and high water-holding capacity soils in the intermediate rainfall ecoregion of India, Thailand, and Vietnam. This study examined the potential yield and yield gap of selected crops predominantly grown in the target regions where the project is operational. We used the CROPGRO-soybean model to determine the potential yield and yield gap of soybean crop for several locations in India. For northeastern Thailand and northern Vietnam we compared the experimental yields with the farmers’ current yields in the region to estimate the yield gaps. It has been estimated that for several locations in India the soybean yield gap ranged from 19% to 65% of potential yield. For northeastern Thailand the yield gap for paddy rice, upland rice, maize, and soybean ranged from 11% to 67% of their respective potential yields. In northern Vietnam the farmers’ maize yields were two-third of the potential yield; however, groundnut and soybean have a yield gap of 40 to 60% of potential yield. Various constraints limiting crop yields in these regions have been highlighted. It is suggested that location-specific integrated approaches would be needed to bridge the yield gap of the predominant crops grown in the target regions.
| Item Type: | Monograph (Monograph) |
|---|---|
| Divisions: | UNSPECIFIED |
| CRP: | UNSPECIFIED |
| Subjects: | Others > Agriculture-Farming, Production, Technology, Economics |
| Depositing User: | Library ICRISAT |
| Date Deposited: | 15 Oct 2011 05:18 |
| Last Modified: | 07 Nov 2011 09:14 |
| URI: | http://oar.icrisat.org/id/eprint/2511 |
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