<> "The repository administrator has not yet configured an RDF license."^^ . <> . . . "Analysis Of Constraints To Increased Productivity Of Dryland Areas"^^ . "The drylands of semi-arid and arid areas of subtropical regions.\r\ncontribute significantly to the world's food production, particularly\r\nof coarse grains, cereals, pulses, and oilseed. Although present\r\nyields of these crops are low, they have excellent production\r\npotential in dryland conditions.\r\nIn the seventies, a number of concepts and techniques have been\r\ndeveloped that can substantially improve the productivity of many\r\nof these drylands. But they have yet to be exploited extensively\r\nand intensively. There are good indications that the new farming\r\npractices can bring about a breakthrough in production in deep\r\nVertisols, which occupy many million hectares in India. An analysis\r\nof constraints to productivity and production in drylands\r\nshows that, besides environmental and socio-economic constraints,\r\ntechnological constraints also seriously limit productivity in many\r\nof these areas.\r\nWater is a limiting factor in drylands and provision of water for\r\nonly \"lifesaving\" irrigation (i.e.. the minimum to prevent total\r\ncrop loss) can stimulate a favourable chain reaction. However,\r\neven without irrigation, appropriate biological technology coupled\r\nwith fertilisers can enhance productivity manifold. Fertiliser-responsive\r\ngenotypes with higher yield potential and stability against\r\nyield reducers are becoming a catalyst of change in drylands.\r\nSuch genotypes are available in the case of sorghum, millet, and\r\nmaize, but not yet for pulses and oilseeds.\r\nDryland farmers are becoming interested in the use of fertilisers'\r\nfor dry-farm crops, but their first preference is for high-value,\r\nmarket-oriented crops, high-yielding cereals and for lands with\r\nbetter moisture-storage capacity capable of giving stable yields\r\nand assured returns. The unirrigated lands of the semi-arid tropics\r\n(SAT) in India are at present given less than 18 kg of NPK per\r\nhectare, while irrigated fields in the same area receive about\r\n58 kg per hectare annually. It is concluded that the rate of\r\ngrowth of fertiliser use in both these situations is commensurate\r\nwith the technology and the infrastructure but there is considerable\r\nscope for increase.\r\nThis suggests a need for intensive research on the loss and efficiency\r\nof notrogenous and Phosphatic fertilisers under dryland\r\nconditions and the development of implements for seeding and\r\nfertiliser application at proper depth in relation to soil moisture.\r\nTo avoid shortfalls in production of coarse grains, pulses, and oil\r\nseeds and to substantially increase their productivity, intensified\r\nsupport for research and development of dryland agriculture is\r\nneeded. Investment in dryland agriculture should be considered a\r\ncast of social justice and equity to prevent an increasing gap between\r\nthe disadvantaged populations of these poor areas and the\r\nrest of the world."^^ . "1980" . . . "Near Jawaharlal Nehru University"^^ . . . . . . . . . . . . . . . . . . . . . . . "B G"^^ . "Varshney"^^ . "B G Varshney"^^ . . "T M"^^ . "Alexander"^^ . "T M Alexander"^^ . . "R"^^ . "Singh"^^ . "R Singh"^^ . . "J S"^^ . "Kanwar"^^ . "J S Kanwar"^^ . . "V S"^^ . "Sivashankaran"^^ . "V S Sivashankaran"^^ . . "B C"^^ . "Biswas"^^ . "B C Biswas"^^ . . . . "FAI Seminar 1980 on Fertilisers in India in the Eighties"^^ . . . . . "New Delhi, India"^^ . . . . . . "Analysis Of Constraints To Increased Productivity Of Dryland Areas (PDF)"^^ . . . . . "0013.pdf"^^ . . . "Analysis Of Constraints To Increased Productivity Of Dryland Areas (Indexer Terms)"^^ . . . . . . "indexcodes.txt"^^ . . . "Analysis Of Constraints To Increased Productivity Of Dryland Areas (Image (PNG))"^^ . . . . . . "lightbox.jpg"^^ . . . "Analysis Of Constraints To Increased Productivity Of Dryland Areas (Image (PNG))"^^ . . . . . . "preview.jpg"^^ . . . "Analysis Of Constraints To Increased Productivity Of Dryland Areas (Image (PNG))"^^ . . . . . . "medium.jpg"^^ . . . "Analysis Of Constraints To Increased Productivity Of Dryland Areas (Image (PNG))"^^ . . . . . . "small.jpg"^^ . . "HTML Summary of #5120 \n\nAnalysis Of Constraints To Increased Productivity Of Dryland Areas\n\n" . "text/html" . . . "Agriculture-Farming, Production, Technology, Economics"@en . .