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Meeting South Asia's future food requirements from rice-wheat cropping systems : priority issues facing researchers in the post-green revolution era

By: Hobbs, P.
Contributor(s): Morris, M.L.
Material type: materialTypeLabelBookSeries: CIMMYT NRG Paper ; 96-01.Analytics: Show analyticsPublisher: Mexico : CIMMYT, 1996Description: viii, 46 pages.Subject(s): Cropping systems | Food production | Production policies | Research projects | RiceOnline resources: Open Access through Dspace Summary: The importance of rice-wheat cropping systems in meeting present and future food needs in South Asia is reviewed. Evidence from a number of factor productivity studies, which analyze yield trends after adjusting for changes in levels of input use, suggests that growth in the productivity of South Asia's rice-wheat cropping systems is leveling off and, in some areas, declining. Some probable causes of this disturbing trend are considered, including soil-related factors (depletion of soil chemicals, soil physical problems from puddling soils for rice and/or repeated cultivation for wheat); problems relating to the quantity and quality of irrigation water; continuous and intensive cereal cultivation, which has increased the incidence of pests (including weeds) and diseases; and delayed planting of wheat following rice, a common practice in many rice-wheat systems, which severely reduces wheat yields. Changes in the organization and management of research, which are required to restore growth in productivity, are discussed in the final sections of the paper.Collection: CIMMYT Publications Collection
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Lic. Jose Juan Caballero Flores

 

CIMMYT Publications Collection CIMMYT NRG Paper / No. 96-01 (Browse shelf) 1 Available Look under series title 623579
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Open Access

The importance of rice-wheat cropping systems in meeting present and future food needs in South Asia is reviewed. Evidence from a number of factor productivity studies, which analyze yield trends after adjusting for changes in levels of input use, suggests that growth in the productivity of South Asia's rice-wheat cropping systems is leveling off and, in some areas, declining. Some probable causes of this disturbing trend are considered, including soil-related factors (depletion of soil chemicals, soil physical problems from puddling soils for rice and/or repeated cultivation for wheat); problems relating to the quantity and quality of irrigation water; continuous and intensive cereal cultivation, which has increased the incidence of pests (including weeds) and diseases; and delayed planting of wheat following rice, a common practice in many rice-wheat systems, which severely reduces wheat yields. Changes in the organization and management of research, which are required to restore growth in productivity, are discussed in the final sections of the paper.

Socioeconomics Program

Text in English

AGRIS 9701|R95CIMPU|STAT96|EconomicsPubs|DSpace 1

CIMMYT Publications Collection

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