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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Trang 13
... lower rates . Estimates of waste and the amounts of potatoes that are fed to livestock and processed are also more often based on popular notions than on fieldwork . The data on potato production and use in this chapter are based on ...
... lower rates . Estimates of waste and the amounts of potatoes that are fed to livestock and processed are also more often based on popular notions than on fieldwork . The data on potato production and use in this chapter are based on ...
Trang 23
... lower in most developing countries than in Europe and North America . Furthermore , because of differences in environmental conditions , levels of development , and prices , the scope for direct transfer of tech- nology from developed ...
... lower in most developing countries than in Europe and North America . Furthermore , because of differences in environmental conditions , levels of development , and prices , the scope for direct transfer of tech- nology from developed ...
Trang 35
... lower the quality of harvested tubers . Three periods can be distinguished in the potato's growth cycle : preemergence / emergence , foliage growth , and tuber growth ( Fig . 6 ) . Foliage growth and tuber growth may overlap for a ...
... lower the quality of harvested tubers . Three periods can be distinguished in the potato's growth cycle : preemergence / emergence , foliage growth , and tuber growth ( Fig . 6 ) . Foliage growth and tuber growth may overlap for a ...
Trang 39
... lower rates on early crops ( which are harvested immature to fetch a high price ) and seed crops ( for which small tubers are desired ) . Application of phosphorus contributes to early tuberization and development of the crop . Added ...
... lower rates on early crops ( which are harvested immature to fetch a high price ) and seed crops ( for which small tubers are desired ) . Application of phosphorus contributes to early tuberization and development of the crop . Added ...
Trang 40
... lower the risk of frost damage . And although cultivating the slopes is bound to cause erosion and should be discouraged , erosion may in fact be minimized by planting up and down or diagonally to the slope , rather than laterally along ...
... lower the risk of frost damage . And although cultivating the slopes is bound to cause erosion and should be discouraged , erosion may in fact be minimized by planting up and down or diagonally to the slope , rather than laterally along ...
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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