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Potential Productivity and Yield Gap of Selected Crops in the Rainfed Regions of India, Thailand, and Vietnam: Natural Resource Management Program Report no. 5

OAR@ICRISAT

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Title Potential Productivity and Yield Gap of Selected Crops in the Rainfed Regions of India, Thailand, and Vietnam: Natural Resource Management Program Report no. 5
 
Creator Singh, P
Vijaya, D
Chinh, N T
Pongkanjana, A
Prasad, K S
Srinivas, K
Wani, S P
 
Subject Agriculture-Farming, Production, Technology, Economics
 
Description 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.
 
Publisher International Crops Research Institute for the Semi-Arid Tropics
 
Date 2001
 
Type Monograph
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/2511/1/994-2001.pdf
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.