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 43
Trang 7
... early sixteenth century , farmers were cultivating hundreds of varieties throughout the highland areas of what are now Bolivia , Chile , Colombia , Ecuador , and Peru . Introduction of the potato in Europe Potatoes were sold in Seville ...
... early sixteenth century , farmers were cultivating hundreds of varieties throughout the highland areas of what are now Bolivia , Chile , Colombia , Ecuador , and Peru . Introduction of the potato in Europe Potatoes were sold in Seville ...
Trang 9
... early 1800s were over 10 tons per hectare - just about the average for all developing countries today . The potato's ascendance as a staple food resulted largely from social conditions in Ireland . During the sixteenth century , unrest ...
... early 1800s were over 10 tons per hectare - just about the average for all developing countries today . The potato's ascendance as a staple food resulted largely from social conditions in Ireland . During the sixteenth century , unrest ...
Trang 34
... Early and late crops Potato varieties differ considerably in the length of time needed to reach maturity . Most ... early potatoes are usually grown . Where the season is longer , a later - maturing variety is usually preferred . But ...
... Early and late crops Potato varieties differ considerably in the length of time needed to reach maturity . Most ... early potatoes are usually grown . Where the season is longer , a later - maturing variety is usually preferred . But ...
Trang 35
... Early - maturing varieties have early emergence and moderate growth of foliage . They produce a relatively high yield in a short period . Late varieties , in contrast , have later emergence and more abundant foliage . If they are ...
... Early - maturing varieties have early emergence and moderate growth of foliage . They produce a relatively high yield in a short period . Late varieties , in contrast , have later emergence and more abundant foliage . If they are ...
Trang 36
... early under another . Farmers also have some latitude in prolonging or shortening the periods in a variety's growth cycle . For example , by applying nitrogen and irrigating heavily , they can extend the vegetative period and raise ...
... early under another . Farmers also have some latitude in prolonging or shortening the periods in a variety's growth cycle . For example , by applying nitrogen and irrigating heavily , they can extend the vegetative period and raise ...
Ấn bản in khác - Xem tất cả
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