Libro-Agroecologia

Bibliografía333Papavizas, G. C. 1973. Status of applied biological control of soil-borne plant pathogens. Soil Biol.Biochem. 5: 709 720.Papendick, R. I., L. F. Elliott, and R. G. Dohlgren. 1986. Environmental consequences of modernproduction agriculture. Amer. J. of Altern. Agric. 1: 3 10.Papendick, R. I., P. A. Sanchez, and G. B. Triplett. 1976. Multiple Cropping. Wisconsin: ASA Spec.Pub. No. 27.Parr, J. F., R. I. Papendick, and I. G. Youngberg. 1983. Organic farming in the United States:principles and perspectives. Agro-ecosystems 8:183 201.Parsons, A. J., and I. R. Johnson. 1986. «The physiology of grass growth under grazing. In: Grazing.J. Frame, ed. England: British Grassland Soc., Animal and Grassland Res. Inst.Paul, E. A., and F. E. Clark. 1989. Soil Microbiology and Biochemistry. California: AcademicPress, Inc.Pearce, A. 1975. The Latin American Peasant. London: Frank Cass.. 1980. Seeds of Plenty; Seeds of Want: Social and Economic Implications of the Green Rev- olution.New York: Oxford Press.Perelman, M. 1977. Farming for Profit in a Hungry World. New Jersey: Allanheld, Osmun and Co.Pub., Inc.Perrin, R. K., D. L. Winkelmann, E. R. Moscardi, and J. R. Anderson. 1979. From agronomic datato farmer recommendations: an economic training manual. Info. Bull. 27. Mexico City:CIMMYT.Perrin, R. M. 1977. Pest management in multiple cropping systems. Agro ecosystems 3: 93 118.Phillips, R. E., and S. H. Phillips. 1984. No-tillage Agriculture: Principals and Practices. NewYork: Van Nostrand Reinhold.Phillips, R. E., R. L. Blevins, G. W. Thomas, W. W. Frye, and S. H. Phillips. 1980. No-tillageagriculture. Science 208: 1108 1113.Pimentel, D. 1973. Extent of pesticide use, food supply and pollution. Proc. N.Y. Ent. Soc. 81: 13 33.Pimentel, D., G. Berardi, and S. Fast. 1983. Energy efficiency of farming systems: organic andconventional agriculture. Agriculture Ecosystems and Environment 9: 359 372.Pimentel, D., and N. Goodman. 1978. Ecological basis for the management of insect populations.Oikos 30: 422 437.Piñeiro, M., and E. Trigo, eds. 1983. Technical Change and Social Conflict in Agriculture: LatinAmerican Perspectives. Boulder: Westview Press.Pimentel, D., and M. Pimentel. 1979. Food, Energy and Society. London: Edward Arnold.Posey, D. 1984. Ethnoecology as applied anthropology in Amazonian development. HumanOrganiz. 43(2): 95 107.. 1985. Indigenous management of tropical forest ecosystems: the case of the Kayapo Indians.Agroforestry Systems. 3: 2.. 1986. An ethnoentomological survey of Brazilian Indians. J. Ethnobiology. 6: 32 38.Power, J. F., and J. W. Doran. 1984. «Nitrogen use in organic farming.» In: Nitrogen in CropProduction. Wisconsin: ASA-CSSA-SSSA, pp. 585 592.Power, J. F., J. W. Doran, and P. T. Koerner. 1991. Hairy vetch as a winter cover crop for drylandcorn production. J. Prod. Agric. 4: 62 67.Prasad, K., R. C. Gautam, and N. K. Mohta. 1985. Studies on weed control in arhar and soybeanas influenced by planting patterns, intercropping and weed control methods. Indian. J. Agron.30: 434 439.Price, P. W., and G. P. Waldbauer. 1975. «Ecological aspects of pest management.» In: Introductionto Insect Pest Management. R. L. Metcalf and W. H. Luckman, eds. New York: WileyInterscience, pp. 37 73.Protheroe, R. M. 1972. People and Land in Africa South of the Sahara. London: Oxford Univ. Press.Pullin, S. V., and Z. H. Shehadeh. 1980. Integrated Agriculture Agriculture Farming Systems.Manila: International Center for Living Aquatic Resource ManagementPutnam, A. R., and J. DeFrank. 1983. Use of phytotoxic plant residues for selective weed control.Crop Prot. 2: 173 181.