Meeting South Asia's future food requirements from rice-wheat cropping systems: priority issues facing researchers in the post-green revolution era
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.
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| Format: | Serial Publication biblioteca |
| Language: | English |
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CIMMYT
1996
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| Subjects: | AGRICULTURAL SCIENCES AND BIOTECHNOLOGY, CROPPING SYSTEMS, FOOD PRODUCTION, PRODUCTION POLICIES, RESEARCH PROJECTS, RICE, |
| Online Access: | http://hdl.handle.net/10883/930 |
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dig-cimmyt-10883-9302023-02-20T15:02:54Z Meeting South Asia's future food requirements from rice-wheat cropping systems: priority issues facing researchers in the post-green revolution era Hobbs, P.R. Morris, M.L. AGRICULTURAL SCIENCES AND BIOTECHNOLOGY CROPPING SYSTEMS FOOD PRODUCTION PRODUCTION POLICIES RESEARCH PROJECTS RICE CROPPING SYSTEMS FOOD PRODUCTION PRODUCTION POLICIES RESEARCH PROJECTS RICE 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. viii, 46 pages 2012-01-06T05:07:54Z 2012-01-06T05:07:54Z 1996 Serial Publication 1405-2830 http://hdl.handle.net/10883/930 English CIMMYT NRG Paper 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 CIMMYT-Knowledge-Center@cgiar.org 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. Open Access PDF Mexico CIMMYT |
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AGRICULTURAL SCIENCES AND BIOTECHNOLOGY CROPPING SYSTEMS FOOD PRODUCTION PRODUCTION POLICIES RESEARCH PROJECTS RICE CROPPING SYSTEMS FOOD PRODUCTION PRODUCTION POLICIES RESEARCH PROJECTS RICE AGRICULTURAL SCIENCES AND BIOTECHNOLOGY CROPPING SYSTEMS FOOD PRODUCTION PRODUCTION POLICIES RESEARCH PROJECTS RICE CROPPING SYSTEMS FOOD PRODUCTION PRODUCTION POLICIES RESEARCH PROJECTS RICE |
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AGRICULTURAL SCIENCES AND BIOTECHNOLOGY CROPPING SYSTEMS FOOD PRODUCTION PRODUCTION POLICIES RESEARCH PROJECTS RICE CROPPING SYSTEMS FOOD PRODUCTION PRODUCTION POLICIES RESEARCH PROJECTS RICE AGRICULTURAL SCIENCES AND BIOTECHNOLOGY CROPPING SYSTEMS FOOD PRODUCTION PRODUCTION POLICIES RESEARCH PROJECTS RICE CROPPING SYSTEMS FOOD PRODUCTION PRODUCTION POLICIES RESEARCH PROJECTS RICE Hobbs, P.R. Morris, M.L. Meeting South Asia's future food requirements from rice-wheat cropping systems: priority issues facing researchers in the post-green revolution era |
| description |
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. |
| format |
Serial Publication |
| topic_facet |
AGRICULTURAL SCIENCES AND BIOTECHNOLOGY CROPPING SYSTEMS FOOD PRODUCTION PRODUCTION POLICIES RESEARCH PROJECTS RICE CROPPING SYSTEMS FOOD PRODUCTION PRODUCTION POLICIES RESEARCH PROJECTS RICE |
| author |
Hobbs, P.R. Morris, M.L. |
| author_facet |
Hobbs, P.R. Morris, M.L. |
| author_sort |
Hobbs, P.R. |
| title |
Meeting South Asia's future food requirements from rice-wheat cropping systems: priority issues facing researchers in the post-green revolution era |
| title_short |
Meeting South Asia's future food requirements from rice-wheat cropping systems: priority issues facing researchers in the post-green revolution era |
| title_full |
Meeting South Asia's future food requirements from rice-wheat cropping systems: priority issues facing researchers in the post-green revolution era |
| title_fullStr |
Meeting South Asia's future food requirements from rice-wheat cropping systems: priority issues facing researchers in the post-green revolution era |
| title_full_unstemmed |
Meeting South Asia's future food requirements from rice-wheat cropping systems: priority issues facing researchers in the post-green revolution era |
| title_sort |
meeting south asia's future food requirements from rice-wheat cropping systems: priority issues facing researchers in the post-green revolution era |
| publisher |
CIMMYT |
| publishDate |
1996 |
| url |
http://hdl.handle.net/10883/930 |
| work_keys_str_mv |
AT hobbspr meetingsouthasiasfuturefoodrequirementsfromricewheatcroppingsystemspriorityissuesfacingresearchersinthepostgreenrevolutionera AT morrisml meetingsouthasiasfuturefoodrequirementsfromricewheatcroppingsystemspriorityissuesfacingresearchersinthepostgreenrevolutionera |
| _version_ |
1762944399712452608 |