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 62
Trang 8
... higher - yielding S. tuberosum varieties , potato cultivation became economically feasible elsewhere in Europe . In Europe potatoes were fed to livestock long before they became a staple in human diets . People rejected potatoes as ...
... higher - yielding S. tuberosum varieties , potato cultivation became economically feasible elsewhere in Europe . In Europe potatoes were fed to livestock long before they became a staple in human diets . People rejected potatoes as ...
Trang 22
... higher in the developed countries and 80 percent higher in the developing countries than they were in the 1950s . This suggests that in the post - war period , potato technology has improved more substan- tially in developing countries ...
... higher in the developed countries and 80 percent higher in the developing countries than they were in the 1950s . This suggests that in the post - war period , potato technology has improved more substan- tially in developing countries ...
Trang 23
... higher in terms of dry matter pro- duction per day ( Table 6 ) . In terms of the nutrients available for human consumption , potatoes are also highly productive in relation to other crops grown in developing countries . Potatoes TABLE 6 ...
... higher in terms of dry matter pro- duction per day ( Table 6 ) . In terms of the nutrients available for human consumption , potatoes are also highly productive in relation to other crops grown in developing countries . Potatoes TABLE 6 ...
Trang 33
... higher than about 4 degrees C. Excessive sprout growth causes dehydration of the tubers and reduces the vigor of the crop grown from them . Light retards sprout growth , and potatoes that are stored in light develop green sprouts that ...
... higher than about 4 degrees C. Excessive sprout growth causes dehydration of the tubers and reduces the vigor of the crop grown from them . Light retards sprout growth , and potatoes that are stored in light develop green sprouts that ...
Trang 34
... higher potential yield . Disease transmission . Many yield - reducing diseases are trans- mitted by seed tubers . Some , such as late blight , are easily spread during the growing season . Others , such as bacterial wilt , can also ...
... higher potential yield . Disease transmission . Many yield - reducing diseases are trans- mitted by seed tubers . Some , such as late blight , are easily spread during the growing season . Others , such as bacterial wilt , can also ...
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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