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 6-10 trong 40
Trang 45
... breeding programs usually need to make several hundred crosses and evaluate hundreds of thousands of seedlings ... breeding programs . Many breeders have conse- quently turned to the Andean potato germplasm - wild species and native ...
... breeding programs usually need to make several hundred crosses and evaluate hundreds of thousands of seedlings ... breeding programs . Many breeders have conse- quently turned to the Andean potato germplasm - wild species and native ...
Trang 46
... breeding and selection work on which these varieties are based was done in Argentina , Mexico , Peru , and other country programs as well as at CIP . Yield and value of the harvest Crop yields are customarily measured in physical weight ...
... breeding and selection work on which these varieties are based was done in Argentina , Mexico , Peru , and other country programs as well as at CIP . Yield and value of the harvest Crop yields are customarily measured in physical weight ...
Trang 47
... and consumers , the standards breeders use to measure such things as " tuber quality " and " marketable yield " should reflect local uses of potatoes , market conditions , and consumer preferences . The The crop and its environment 47.
... and consumers , the standards breeders use to measure such things as " tuber quality " and " marketable yield " should reflect local uses of potatoes , market conditions , and consumer preferences . The The crop and its environment 47.
Trang 48
... breeding and selection new varieties can be produced that grow well under a wide range of ecological conditions . Varietal im- provement has been a key factor in expanding potato production throughout the world . Nevertheless , certain ...
... breeding and selection new varieties can be produced that grow well under a wide range of ecological conditions . Varietal im- provement has been a key factor in expanding potato production throughout the world . Nevertheless , certain ...
Trang 51
... breeding new potato varieties is based on Mendoza and Sawyer ( 1985 ) , Hawkes ( 1978a ) , Howard ( 1978 ) , Huamán and Ross ( 1985 ) , and on conversations with Carlos Ochoa , Zosimo Hua- man , and Humberto Mendoza of the CIP staff . 3 ...
... breeding new potato varieties is based on Mendoza and Sawyer ( 1985 ) , Hawkes ( 1978a ) , Howard ( 1978 ) , Huamán and Ross ( 1985 ) , and on conversations with Carlos Ochoa , Zosimo Hua- man , and Humberto Mendoza of the CIP staff . 3 ...
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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