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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Kết quả 1-5 trong 32
Trang vi
... Lowland potato production 123 .... Temperate - zone production .. Mediterranean potato production .... 127 131 Examples of production systems . 131 Bibliographic notes .. .. 153 7 Research priorities and potato programs The case for ...
... Lowland potato production 123 .... Temperate - zone production .. Mediterranean potato production .... 127 131 Examples of production systems . 131 Bibliographic notes .. .. 153 7 Research priorities and potato programs The case for ...
Trang 11
... 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 production spread throughout the country and is now particularly ...
... 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 production spread throughout the country and is now particularly ...
Trang 41
... lowland humid tropics and is a major barrier to potato cultivation . Many farmers try to ward off infection of their fields by purchasing seed only from areas free of bacterial wilt . In areas that are already infected , rotations can ...
... lowland humid tropics and is a major barrier to potato cultivation . Many farmers try to ward off infection of their fields by purchasing seed only from areas free of bacterial wilt . In areas that are already infected , rotations can ...
Trang 43
... particularly in the highland tropics , and root - knot nematode ( Meloidogyne spp . ) , mainly in the lowland tropics . The cyst nematode also occurs in Europe and North America . Although The crop and its environment 43.
... particularly in the highland tropics , and root - knot nematode ( Meloidogyne spp . ) , mainly in the lowland tropics . The cyst nematode also occurs in Europe and North America . Although The crop and its environment 43.
Trang 48
... lowland tropics that have high night temperatures . Generally , the potato can be characterized as a high - input , high - output , high - risk crop . The great responsiveness of yields to inputs - such as high quality seed tubers ...
... lowland tropics that have high night temperatures . Generally , the potato can be characterized as a high - input , high - output , high - risk crop . The great responsiveness of yields to inputs - such as high quality seed tubers ...
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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