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. |
Từ bên trong sách
Kết quả 6-10 trong 60
Trang 37
... increase plant respiration , depleting carbohydrate reserves and slowing tuber growth . Sprout growth is also influenced by soil temperature . Soil temperatures below about 12 degrees or above 28 degrees C impair sprout development ...
... increase plant respiration , depleting carbohydrate reserves and slowing tuber growth . Sprout growth is also influenced by soil temperature . Soil temperatures below about 12 degrees or above 28 degrees C impair sprout development ...
Trang 40
... increasing land scarcity and population pressure , farmers are forced to intensify crop production in mountainous areas . When night frost occurs , cold air moves down the slopes and concentrates on the valley floors . Therefore , by ...
... increasing land scarcity and population pressure , farmers are forced to intensify crop production in mountainous areas . When night frost occurs , cold air moves down the slopes and concentrates on the valley floors . Therefore , by ...
Trang 43
... increased . Many farmers have gotten onto a treadmill that requires them to apply ever - increasing quantities of pesticides just to maintain the same level of control . Often they find that even at higher rates of application and ...
... increased . Many farmers have gotten onto a treadmill that requires them to apply ever - increasing quantities of pesticides just to maintain the same level of control . Often they find that even at higher rates of application and ...
Trang 45
... increased frequency of genes controlling resistances , adaptation , yield , and desirable quality factors . Advanced lines and selected clones are made available to scientists in national potato programs , who can then make further ...
... increased frequency of genes controlling resistances , adaptation , yield , and desirable quality factors . Advanced lines and selected clones are made available to scientists in national potato programs , who can then make further ...
Trang 54
... increasing specialization in production , the advance of scientific knowledge , and the growing influence of ... increases in per capita income have also stimulated households to diversify their diets and consume smaller quantities of ...
... increasing specialization in production , the advance of scientific knowledge , and the growing influence of ... increases in per capita income have also stimulated households to diversify their diets and consume smaller quantities of ...
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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 |
Thuật ngữ và cụm từ thông dụng
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