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 31
Trang viii
... Effects of a shift in the supply curve on the price and quantity of potatoes supplied and demanded .... 9 Bangladesh : Three - year moving average of wholesale potato prices ... 10 Bangladesh : Seasonal cycle of retail potato prices ...
... Effects of a shift in the supply curve on the price and quantity of potatoes supplied and demanded .... 9 Bangladesh : Three - year moving average of wholesale potato prices ... 10 Bangladesh : Seasonal cycle of retail potato prices ...
Trang 33
... effects of high storage temperatures . This aspect of tuber physiology has practical implications for seed storage in developing countries . That is , the storage life of potatoes held without refrigeration can be prolonged by exposing ...
... effects of high storage temperatures . This aspect of tuber physiology has practical implications for seed storage in developing countries . That is , the storage life of potatoes held without refrigeration can be prolonged by exposing ...
Trang 37
... effect of water stress on photosynthesis . In general , a dry spell that occurs in the later stages of growth reduces yield more than one during earlier stages . In warm periods potatoes require more frequent irrigation than other crops ...
... effect of water stress on photosynthesis . In general , a dry spell that occurs in the later stages of growth reduces yield more than one during earlier stages . In warm periods potatoes require more frequent irrigation than other crops ...
Trang 39
... effect on yield than added nitrogen or phosphorus , but it may reduce the dry matter content of the tubers . Potatoes are tolerant of soil acidity , but in soils that have a pH below about 4.8 , yields can be severely depressed by ...
... effect on yield than added nitrogen or phosphorus , but it may reduce the dry matter content of the tubers . Potatoes are tolerant of soil acidity , but in soils that have a pH below about 4.8 , yields can be severely depressed by ...
Trang 40
... effect on production . Indiscrim- inate " blanket " control can do more harm than good by destroying beneficial organisms and upsetting delicate ecosystems . As a result , farmers try to control only those pests and diseases that they ...
... effect on production . Indiscrim- inate " blanket " control can do more harm than good by destroying beneficial organisms and upsetting delicate ecosystems . As a result , farmers try to control only those pests and diseases that they ...
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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