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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... Mantaro Valley , Peru , by agroecological zone , 1977/78 . Value of ten major crops in developing countries compared with research expenditures in the CGIAR system . Figures ... 107 121 135 160 1 Trends in potato production and total ...
... Mantaro Valley , Peru , by agroecological zone , 1977/78 . Value of ten major crops in developing countries compared with research expenditures in the CGIAR system . Figures ... 107 121 135 160 1 Trends in potato production and total ...
Trang 131
... Mantaro Valley , Peru , illustrates field crop potato production in the high Andes . Cañete Valley on Peru's Potato production systems 131 Mediterranean potato production Examples of production systems.
... Mantaro Valley , Peru , illustrates field crop potato production in the high Andes . Cañete Valley on Peru's Potato production systems 131 Mediterranean potato production Examples of production systems.
Trang 132
... Mantaro Valley , Peru In recent years , the population of Peru has grown faster than the output of potatoes , so per capita consumption of this staple food has fallen to about 65 kg a year . In the highlands , con- sumption nevertheless ...
... Mantaro Valley , Peru In recent years , the population of Peru has grown faster than the output of potatoes , so per capita consumption of this staple food has fallen to about 65 kg a year . In the highlands , con- sumption nevertheless ...
Trang 133
... Mantaro River Jauja Figure 14. Agroecological zones of the Mantaro Valley , Peru . Source : Adapted from E. Mayer , Land use in the Andes ( Lima : International Potato Center , 1979 ) . Man Huancayo z + 7 differ from those of the large ...
... Mantaro River Jauja Figure 14. Agroecological zones of the Mantaro Valley , Peru . Source : Adapted from E. Mayer , Land use in the Andes ( Lima : International Potato Center , 1979 ) . Man Huancayo z + 7 differ from those of the large ...
Trang 134
... valley's growing season begins with the October rains and continues until killing frosts occur in May . Land near the Mantaro River is irrigated , but most cultivation in higher fields ... Mantaro Valley , 134 Potato production systems.
... valley's growing season begins with the October rains and continues until killing frosts occur in May . Land near the Mantaro River is irrigated , but most cultivation in higher fields ... Mantaro Valley , 134 Potato production systems.
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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