Potatoes: Production, Marketing, And Programs For Developing CountriesInternational Potato Center, 23 thg 4, 1987 - 243 trang World patterns and trends in potato production and use; The potato crop and its physical environment; The socioeconomic environment: Levels of development and public policies; Supply, demand, and marketing; Potato nutrition and consuption; Potato production systems; Research priorities and potato programs; Impact of potato programs; Summing up. |
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... limited just 10 years ago , but is now growing rapidly . In this book , Dr. Horton has synthesized in a clear manner a vast amount of information on potato research and economics for the benefit of the nonspecialist . This model could ...
... limited just 10 years ago , but is now growing rapidly . In this book , Dr. Horton has synthesized in a clear manner a vast amount of information on potato research and economics for the benefit of the nonspecialist . This model could ...
Trang 11
... limited by difficulties inherent in producing and storing them in the lowlands . The potato arrived in China around 1700 from the Dutch East Indies ( now Indonesia ) . Introductions were also made to northern China from Russia . Potato ...
... limited by difficulties inherent in producing and storing them in the lowlands . The potato arrived in China around 1700 from the Dutch East Indies ( now Indonesia ) . Introductions were also made to northern China from Russia . Potato ...
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... limited . In terms of dry matter production per hectare , potatoes are among the most productive crops grown in the developing countries ( Table 5 ) . Because of their relatively short growing period , potatoes rank even higher in terms ...
... limited . In terms of dry matter production per hectare , potatoes are among the most productive crops grown in the developing countries ( Table 5 ) . Because of their relatively short growing period , potatoes rank even higher in terms ...
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... limited oxygen content of very wet soil damages roots , and new tubers in saturated soil may rot because their lenticels open , permitting bacteria to enter . Irregular water supply induces growth cracks , " hollow heart , " irregular ...
... limited oxygen content of very wet soil damages roots , and new tubers in saturated soil may rot because their lenticels open , permitting bacteria to enter . Irregular water supply induces growth cracks , " hollow heart , " irregular ...
Trang 49
... limited ; and coordination of truck , rail , and ocean shipping often is difficult . The variablity of potato yields , perishability of harvested tubers , and high costs of transportation and storage result in price instability . Price ...
... limited ; and coordination of truck , rail , and ocean shipping often is difficult . The variablity of potato yields , perishability of harvested tubers , and high costs of transportation and storage result in price instability . Price ...
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Potatoes: Production, Marketing, And Programs For Developing Countries Douglas Horton Xem trước bị giới hạn - 2019 |
POTATOES: Production, Marketing, and Programs for Developing Countries DOUGLAS. HORTON Không có bản xem trước - 2019 |
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Africa agricultural agricultural research America areas average Bangladesh blight breeding capita Central cereals changes commodity consumers costs crop cultivation demand depends developing countries diseases early economic effect estimates Europe example expand farmers farms fertilizers field food crops growing grown growth harvest hectare higher highland impact important improved income increase India inputs insect institutions International Potato Center land late less levels Lima limited losses lower lowland major Mantaro Valley needs North percent period Peru pests plant policies population potato consumption potato crop potato prices potato production potato programs practices priorities problems processing projections rates reduce regions relative requirements research and extension resistance result rice root Rwanda season seed tubers selection soil South South Korea sprout storage stored supply Table temperate temperatures tons tropical usually varieties vegetable virus yields zones