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 30
Trang 11
... irrigation and storage methods improved , population grew , and demand for food increased . Potatoes were introduced into Tibet from both China and India . By 1900 the chief dish of the Tibetans was reported to be a stew of meat and ...
... irrigation and storage methods improved , population grew , and demand for food increased . Potatoes were introduced into Tibet from both China and India . By 1900 the chief dish of the Tibetans was reported to be a stew of meat and ...
Trang 37
... irrigation . The potato plant is more sensitive to drought than most other crops . Only a small part of the water taken up by the plant is used directly in photosynthesis . The primary roles of water are to cool the plant by ...
... irrigation . The potato plant is more sensitive to drought than most other crops . Only a small part of the water taken up by the plant is used directly in photosynthesis . The primary roles of water are to cool the plant by ...
Trang 39
... irrigation , killing the roots and causing the tubers to rot . Fertilization Because potatoes respond extremely well to both farmyard manure and mineral fertilizers , most growers apply fertilizers . Although recommendations on the ...
... irrigation , killing the roots and causing the tubers to rot . Fertilization Because potatoes respond extremely well to both farmyard manure and mineral fertilizers , most growers apply fertilizers . Although recommendations on the ...
Trang 54
... Irrigation canals and stone - walled terraces were constructed throughout the Incan empire , converting barren mountainsides into productive cropland for maize , potatoes , and other crops . Agricultural implements , such as the Andean ...
... Irrigation canals and stone - walled terraces were constructed throughout the Incan empire , converting barren mountainsides into productive cropland for maize , potatoes , and other crops . Agricultural implements , such as the Andean ...
Trang 55
... irrigation and introduction of earlier varieties of cereals have allowed potato production to expand in the populous Indo - Gangetic plain in the winter season . An effective seed production system was developed for the plains , and the ...
... irrigation and introduction of earlier varieties of cereals have allowed potato production to expand in the populous Indo - Gangetic plain in the winter season . An effective seed production system was developed for the plains , and the ...
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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