Appropriate technology: research in alternative agriculture systems : hearing before the Subcommittee on Natural Resources, Agriculture Research, and Environment of the Committee on Science and Technology, U.S. House of Representatives, Ninety-seventh Congress, second session, September 30, 1982
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acid Agency for International agricultural development agricultural production agricultural research agricultural technology alternative Amazon Basin applied appropriate technology areas BRADY Carolina State University consecutive crops continuous cultivation cooperative corn developing countries developing world ecological economic effective efforts environment erosion family planning food and agricultural food production food security funded hectare humid tropics improved technologies income increase India Integrated Pest Management international agricultural kudzu land laterite LDCs legume lime and fertilizer long-term major marginal soils marketing Nicholaides nitrogen North Carolina nutrient nutritional organic farms Oxisols Oxisols and Ultisols percent Peru phosphorus plant population Postharvest potassium private sector problems programs question region rotation rural Sanchez SCHEUER SCHNEIDER science and technology scientists shifting cultivation small farmers Soil Management soybeans strengthen technical assistance technology transfer testimony third world tion Ultisols United upland rice varieties World Bank Yurimaguas Yurimaguas technology