Acosta, J. R., and G. J. Perez. 1954. Abonamiento en yuca. Suelo Tico 7(31):300309.
Albuquerque, M. de. 1958a. Estudo de fertilidade com mandioca em latosolo amarele esgotado da Zona do Estuário Amazônico. Boletim Informativo do Instituto do Pesquisas e Experimenta, Agropecuárias do Norte, 134:5.
Almeida, F. C. G. de. 1971. Pesquisas em mandioca. Reuniao da Comissao Nacional da Mandioca. 5a:3340. Sete Lagoas, Minas Gerais.
Almendras, A. S., R. E. de la Cruz, and I. J. Manglat. 1982. Effect of soil type, fertilization and mycorrhizal inoculation on NPK uptake of cassava. Annals of Tropical Research 4(2):118126.
Ambe-Tumanteh, J. 1980. Preliminary investigation into the relationship between soil nutrient status, pest nutrient uptake and cassava mosaic disease symptom expression in a cassava local cultivar, Isunikakiyan. Masters thesis. Ibadan, Nigeria: Univ. of Ibadan.
Amon, B. O. E., and S. A. Adetunji. 1973. The response of maize, yam and cassava to fertilizers in a rotation experiment in the savannah zone of western Nigeria. Nigerian Agricultural J. 10(1):9198.
Annual report of the Central Tuber Crop Research Institute. 1969. Trivandrum, India: CTCRI.
Arismendi, L. G. 1973a. Epocas de siembra y tiempos de cosecha del cultivo de la yuca, Manihot esculenta, Crantz en la sabana de Jusepin. Monagas, Venezuela: Univ. de Oriente, Instituto de Investigaciones Agropecuarias, Boletín Informativo. Série Agronomía 7. 7 pg.
Asher, C. J., D. G. Edwards, and R. H. Howeler. 1980. Nutritional disorders of cassava, Manihot esculenta, Crantz. Brisbane: Univ. of Queensland, Department of Agriculture, 48 pg.
Backyard to semi-commercial cassava production. 1973. PCAR, Crops Research Division. 5 pg. (Mimeo.)
Birkinshaw, F. 1926. A brief summary of tapioca cultivation on what is now a valuable rubber estate in province Wellesley. Malayan Agricultural J. 14:361364.
Blin, H. 1905. La fumure du manioc. Bul. Econ. 3:419421.
Bolhuis, G. G. 1952. Lemploi de la réaction par la couleur de Guignard dans la sélection du manioc. Revue International Bot. Appl. dAgr. Tropical 32:361362, 559564.
Bonnet, A. 1949. Séances du Congres du Manioc. Marseilles, 30.
Brawijaya University, Faculty of Agriculture Cassava Research Project. 1975. Progress report III, Nov. 1974Oct. 1975. Malang, Indonesia.
Calderon A. H. 1972. Ensayo de distancias de siembra con dos variedades de yuca, Manihot esculenta, Crantz en la región de Santágueda. Tesis. Ing. Agr. Manizales, Colombia: Univ. de Caldas, Facultad de Agronomía. 55 pg.
Cassava progam annual report 1980. 1981. Cali, Colombia: CIAT. 93 pg.
Chadha, T. R. 1958. Fertilizer experiments on tapioca in the Kerala State. J. Indian Society of Soil Science 6(1):5363.
Chamat, J. J. 1980. Aspectos económicos de la producción de yuca en los Llanos Orientales de Colombia. Simposia colombiano sobre alcohol carbuante, ed. by T. Brekelbaum, J. C. Toro, and V. Izquierdo, 4555. Cali, Colombia: CIAT.
Chan, A. K., compiler. 1971. Growing tapioca, Manihot esculenta, Crantz. Malaysia: Department of Agriculture, Extension Branch, Farm Management Section, Technical Paper 3. 16 pg.
Chan, S. K. 1969. Tapioca investigations at the Federal Experimental Station, Serdang, Ministry of Agriculture, Kuala Lumpur, Malaysia. (Mimeo.)
Chew, M. Y. 1970. Malaysian Agricultural J. 47:354.
Chew, W. Y. 1970. Varieties and NPK fertilizers for tapioca, Manihot utilissima, Pohl on peat. Malaysian Agricultural J. 47(4):483491.
Chew, W. Y. 1971. The performance of tapioca, sweet potato and ginger on peat at the Federal Experiment Station, Jalan Kebun, Selangor. Kuala Lumpur, Malaysia: Agronomy Branch, Division of Agriculture. 7 pg.
Chimprabha, M. 1967. Cassava, Manihot utilissima, Pohl. Bangkok, Thailand: Nai Chaleo Chuntarasup. 9 pg.
Chung, C. Y. 1975. Field observations on the performance of tapioca smallholdings on three soil types in Selangor. Extension and Advisory Services Branch, Division of Agriculture, Ministry of Agriculture and Rural Development, Kuala Lumpur. Unpublished ms.
Chung, C. Y. 1976. Commercial tapioca production by smallholders on different soil types in the Kinta District, Perak. Farm Management Information Series, Extension and Advisory Services Branch, Division of Agriculture, Ministry of Agriculture and Rural Development, Kuala Lumpur. Unpublished ms.
CIAT. 1975. Annual report for 1974. Cali, Colombia: Centro Internacional de Agricultura Tropical.
Cock, J. H. 1973a. Cyanide toxicity in relation to the cassava research program of CIAT in Colombia. Proceedings of an interdisciplinary workshop on chronic cassava toxicity, London, England, 2930 January 1973, ed. by B. Nestel, and R. MacIntyre, 3740. Ottawa, Canada: International Development Research Centre, IDRC-010e. 163 pg.
Cock, J. H. 1973b. Paper presented at the 3rd Int. Symposium on Trop. Root Crops, 29 Dec. 1973.
Cock, J. H., and R. H. Howeler. 1979. The ability of cassava to grow on poor soils. Crop tolerance to suboptimal land conditions, ed. by G. A. Jung, 145154. Madison, Wis.: American Society of Agronomy.
Conceição, A. J. da. 1975b. Instruções para o cultivo da mandioca. Cruz das Almas, Brasil: Univ. Federal da Bahia, Escola de Agronomía/BRASCAN Nordeste. Série Extensão 1(2). 22 pg.
Conceição, A. J. da, C. Y. Sampaio, and I. O. Borges. 1975. Competição de cultivares de mandioca, Manihot esculenta, Crantz para a produçao de ramas e raízes forrageiras. Cruz das Almas, Brasil: Univ. Federal da Bahia, Escola de Agronomía/BRASCAN Nordeste. Série Pesquisa 1(1):8797.
Congo (Brazzaville), Ministere de lAgriculture, Rapport déxecution 19721973. 1974. Brassaville: Bureau pour le Dévelopment de la Production Agricole. 62 pg.
Cornil, J., G. Ledent, R. Vanderstappen, P. Herman, M. Van der Velden, and F. Delange. 1974. Etude comparative de la composition chimique de végétaux et de sols des régions goîtreuse et non goîtreuse de lîle Idjwi (Lac Kivu, République du Zaïre). Bulletin des Séances de lAcadémie Royale des Sciences dOutre-Mer 3:386402.
Correa, H. 1971. Possibilidades de aproveitamento do cerrado para cultura da mandioca. Sete Lagõas, Brasil: Instituto de Pesquisa e Experimentação Agropecuárias Centro - Oeste. 15 pg.
Cours, G. 1953. Amélioration des plantes: le manioc. Bulletin Recheres Agronomiques Madagascar 2:78288.
Cultura da mandioca. n.d. São Paulo, Brasil: Secretária de Agricultura. Cordenação de Assistência Técnica Integral. Instrução Prática 141. 19 pg.
Cunliffe, R. S. 1916. La yuca: Su cultivo, variedades, contenido en almidón y fabricación. Santiago de las Vegas, Cuba: Secretaría de Agricultura Comercio y Trabajo. Estación Experimental Agronómica. Boletín 34. 66 pg.
Curiel, N. F., and R. E. J. Velásquez. 1977. Técnicas para la producción de yuca, con especial interés para el Estado Monagas. Caracas, Venezuela: Ministerio de Agricultura y Cría. 52 pg.
Dangler, James M. 1982. Root and top yields of cassava and sweet potato as affected by cultivar, fertilizer rate, cowpea intercrop or time of harvest. M.S. thesis. Gainesville, Fl: Univ. of Florida.
de Gues, J. G. 1967. Root crops; cassava. Fertilizer guide for tropical and subtropical farming, 181185. Zurich: Centre dEtude de lAzote.
Dijk, J. W. van. 1951. Plant, bodem en bemesting. II. Bemesting. Groningen, Netherlands: J. B. Wolters. 200 pg.
Dizes, J. 1975. Aperçus sur le manioc et sa culture. Abidjan, Côte dIvoire, Office de la Recherche Scientifique et Technique Outre - Mer, Centre dAdiopodoumé, Service dExperimentation Biologique. 48 pg.
Doop, J. E., and A. Den. 1937. Groenbemesting, kunstmest and andere factoren in Sisal- en Cassava-productie. De Bergcultures 36:12901305.
Doop, J. E., and A. Den. 1941. Factors influencing the availability of the indigenous phosphorus in an acid tropical soil. Soil Science 52:101120.
Edwards, D. G., and B. T. Kang. 1978. Tolerance of cassava to high soil acidity. Field Crops Research 1:337346.
Ehlers, R. F. 1954. Considerações sôbre a cultura da mandioca. Granja 10(81):4446; 10(82):3437. Brasil.
Estudios de costos de producción de yuca. Centro Agrícola Regional de la Zona Norte, Zona de San Francisco de la Palmera, 29 fincas, Año 1973, Costa Rica. 1974. Min. de Agr. y Ganadería, Dirección de Planeamiento y Coordinación, Dept. de Economía y Estadísticas Agropecuarias. Boletín Técnico 21. 40 pg.
Ezeilo, W. N. O. 1977. The effect of fertilizers and other inputs on yield and nutritive value of cassava and other tropical root crops. 13th Colloquium of the International Potash Institute, York, England.
Feller, M. 1968. Cultura da mandioca. Recife, Brasil: Grupo Executivo da Integração da Politica dos Transportes. 9 pg.
Ferreira Filho, J. C., et al. 1942. Manual da mandioca, a mais brasileira das plantas uteis; cultura, pragas e doenças, indústria. São Paulo, Brasil: Edição da Chácaras e Quintaes. 299 pg.
Fertilizer experiments with cassava. 1960. Tropical Agriculture 116:253.
Forno, D. A., C. J. Asher, and D. G. Edwards. 1976. Mist propagation of cassava tip cuttings for nutritional studies: Effects of substrata calcium concentration, temperature and shading. Tropical Agriculture 58(1):4755. Trinidad.
Godfrey-Sam-Aggrey, W., and H. S. Bundu. 1972. Growing and fertilizing cassava in three cropping systems on upland soils of Sierra Leone. Univ. of Sierra Leone, Njala Univ. College, Circular 6. 19 pg.
Gómez, J. de C., and R. H. Howeler. 1980. Cassava production in low fertility soils. Proceedings of a workshop on cassava cultural practices, Bahia, Brazil, ed. by Weber, Torro, and Graham, 93102. Ottawa, Canada: IDRC. IDRC-151e.
Graner, E. A. 1944. Genética de Manihot. Bragantia 2:1322.
Graner, E. A., and J. T. M. Abrahao. 1970. Cultura da mandioca. Piracicaba, Brasil: Escola Superior de Agricultura Luiz de Queiroz, Dept. de Agr. e Horticultura. 24 pg.
Grossman, J. 1945. A cultura da mandioca no Rio Grande do Sul. Revista de la Facultad de Agronomía 42:4375.
Grossman, J., and J. A. de Assis. 1951. Ensaios de adubação. Revista Agronômica 15:169173.
Hahn, S. K., E. R. Terry, K. Leuschner, I. O. Akobunda, C. O. Okali, and R. Lal. 1979. Cassava improvement in Africa. Field Crops Research 2:193226.
Howeler, R. H. 1978a. The mineral nutrition and fertilization of cassava. Cassava production course, compiled by C. Dominguez, 247292. Cali, Colombia: CIAT.
Howeler, R. H. 1978b. The mineral nutrition and fertilization of cassava. Cassava production course, 247292. Cali, Colombia: International Centre of Tropical Agriculture (CIAT).
Howeler, R. H. 1980a. Soil related cultural practices for cassava. Proceedings of Workshop on cassava cultural practices. Bahia, Brazil, ed. by Weber, Torro, and Graham, 5969. Ottawa, Canada: IDRC. IDRC-151e.
Howeler, R. H. 1980b. El efecto de la inoculación con micorrizas sobre la nutrición fosfórica de la yuca. Cali, Colombia: CIAT. Series SE-3-80. 26 pg.
Howeler, R. H., L. F. Cadavid, and F. A. Calvo. 1977. The interaction of lime with minor elements and phosphorus in cassava production. Proceedings of the 4th Symposium of the International Society for Tropical Root Crops, Cali, Colombia, ed. by J. H. Cock, R. MacIntyre, and M. Graham, 113117. Ottawa, Canada: IRDC. IDRC-080e.
Jacob, A., and H. Von Uexkull. 1966. Fertilización de los cultivos tropicales y subtropicales; yuca o mandioca. Fertilización, ed. by Hanover, Kali, and Salz, 153159.
Jacoby, T. 1965. Nutrition and manuring of root crops. Verlagsgesellschaft für Ackerbau, Mbh, Hannover, Green Bulletin 19:916.
Kanapathy, K. 1974a. Fertilizer experiments on shallow peat under continuous cropping with tapioca. Malaysian Agricultural J. 49(4):403412.
Kang, B. T., A. S. R. Juo, and G. Heys. 1981. IITA Annual report, 1415. Ibadan, Nigeria: IITA.
Kang, B. T., and A. S. R. Juo. 1982. IITA Annual report, 129. Ibadan, Nigeria: IITA.
Kang, B. T., R. Islam, F. E. Sanders, and A. Ayanaba. 1980. Effect of phosphate fertilization and inoculation with VA-mycorrhizal fungi on performance of cassava, Manihot esculenta, Crantz, grown on an alfisol. Field Crops Research 3:8394.
Kay, D. E. 1973. Crop and product digest 2: Root crops. London: Tropical Products Institute. 245 pg.
Keating, B. A., and J. P. Evenson. 1979. Effect of soil temperature on sprouting and sprout elongation of stem cuttings of cassava, Manihot esculenta, Crantz. Field Crops Research 2:241251.
Kensinger, K. M. 1975. Studying the Cashinahua. The Cashinahua of eastern Peru, Studies in anthropology and material culture 1:985, ed. by J. Dwyer. Providence, RI: The Haffenreffer Museum of Anthropology, Brown Univ.
Krochmal, A., and G. Samuels. 1967. The influence of NPK levels on the growth and tuber development of cassava in tanks. Proceedings of International Symposium on Tropical Root Crops 1(2):97102. St. Augustine, Trinidad: Univ. of the West Indies.
Krochmal, A., and G. Samuels. 1968. Deficiency symptoms in nutrient pot experiments with cassava. Ceiba. 14(1):716.
Krochmal, A., and G. Samuels. 1970. Ceiba. 16:35.
Kumar, B. M., R. C. Mandal, and M. L. Magoon. 1971. Influence of potash on cassava. Indian J. of Agriculture 16(1):8284.
Kunju, U. M. 1972. Tapioca a food cum industrial crop. Farmer Parliament 7(10):910, 29.
Kurian, T. et al. 1976. Regulation of the levels of cyanogenetic glucosides in cassava, Manihot esculenta. J. of Root Crops 2(2):3943.
Lal, R. 1980. IITA Annual report. Ibadan, Nigeria: IITA.
Lorenzi, J. O. 1978. Absorção de macronutrientes e acumulação de matéria seca para duas cultivares de mandioca, Manihot esculenta, Crantz. Brasil: Universidade de São Paulo. 92 pg.
Magoon, M. L. 1967. Recent trends in cassava breeding in India. Proceedings of an International Symposium on Tropical Root and Tuber Crops 1:100117. St. Augustine, Trinidad: Univ. of the West Indies.
Malavolta, E., E. A. Graner, T. Coury, M. O. C. Brasil Sobr, and J. A. de C. Pacheco. 1955. Studies on the mineral nutrition of cassava, Manihot utilissima, Pohl. Plant Physiology 30(1):8182.
Malavolta, E., T. Coury, E. A. Graner, J. A. de C. Pacheco, and M. O. C. Brasil Sobr. 1953. Abudacão da mandioca, Manihot utilissima, Pohl. I. Ensaio emareia lavada (Nota prévia). Anales Escola Superior de Agricultura Luiz de Queiroz 10:217222. Piracicaba, Brasil.
Mallard, R. P. 1962. A mandioca e sua cultura. Boletim Agricola 11(1/6):8996.
Mandal, R. C., K. D. Singh, and S. B. Maini. 1973. Effect of plant density, fertility level and shootnumber on tuber yield and quality of tapioca hybrids. Indian J. of Agronomy 18(4):498593.
Manihot. 1965. Compte rendu des activités de lIRAT aux Antilles, 19631964 Fort de France, Martinique, 224248. Institut des Recherches Agronomiques Tropicales et des Cultures Vivrières.
Manioc. 1970. Projet PNUD - FAO de développement de la plaine de Morondava (Madagascar), 7579. Paris.
Martin, M. 1952. Le manioc. Engrais 53:1720.
Mattos, P. L. P. de, J. de C. Gomes, and A. P. de Matos. 1973. Cultura da mandioca. Cruz das Almas, Brasil: Instituto de Pesquisas Agropecuárias do Leste. Circular 27. 13 pg.
McIntosh, Jerry L., and Suryatna Effendi. 1979. Soil fertility implications of cropping patterns and practices for cassava. Intercropping with cassava. Proceedings of an international workshop held at Trivandrum, India, 27 Nov1 Dec 1978, ed. by E. Weber, B. Nestel, and M. Campbell, 7785. Ottawa, Canada: International Development Research Centre, IDRC-142e. 143 pg.
Menon, A. G. G., K. P. M. Nair, and C. M. George. 1966. Effect of seradix B1, B2 and B3 on the yield of tapioca, Manihot esculenta syn. Manihot utilissima. Agricultural Research J. of Kerala 4(2):9599.
Miege, J. 1957. Essais culturels sur le manioc. J. dAgriculture Tropicale et de Botanique Apliquée 4(9-10):402442.
Molinary-Sales, E., and Julia F. Molinary-Sales. 1939. Fertilizer experiments with cassava. Puerto Rico Agricultural Experiment Station Annual Report.
Monteiro, T. 1956. Como cultivar a mandioca. São Paulo, Edições Melhoramentos. 29 pg.
Nair, P. G., and T. Varghese. 1970. Effect of liming on the yields and quality of cassava in laterite soils. Agricultural Research J. of Kerala 8(1):1416.
Ngongi, A. G. N. 1976. Influence of some mineral nutrients on growth, composition and yield of cassava, Manihot esculenta, Crantz. Ph.D. dissertation. Ithaca, N.Y.: Cornell Univ. 215 pg.
Ngongi, A. G. N., R. H. Howeler, and H. A. MacDonald. 1977. Effects of potassium sources and rates of application on growth, yield and composition of cassava, Manihot esculenta, Crantz. Proceedings of the 4th International Symposium on Tropical Root Crops, 107113. Cali, Colombia.
Nijholt, J. A. 1935. Opname van voedingstaffen uit den bodem cassave. Landbouw 10(9):329353.
Nijholt, J. A. 1936. Opname van voedingstoffen uit de bodem by cassava. Landbouw and Ernährung der Pflanze. 32:406408.
Nitis, I. M., and I. G. N. Sumatra. 1976. The effect of fertilizers on the growth and yield of cassava, Manihot esculenta, var. Gading, undersown with stylo (Stylosanthes guyanensis cv. Schofield) at Penebel, Bali. Denpasar, Bali: Univ. Udayana, Fakultas Kedotern Heivan dan Peternakan. Bulletin 048. 13 pg.
Normanha, E. S. 1951. Adubação da mandioca no estado de São Paulo. Parte I. Efeito da adubação mineral. Bragantia 11(79):181194.
Normanha, E. S. 1960. Adubação da mandioca e mamoneiras em terras fracas. Chácaras e Quintais 101(2):162.
Normanha, E. S. 1961a. Adubação da mandioca. FIR 3(8):1819. São Paulo.
Normanha, E. S. 1963. Adubação da mandioca. Chácaras e Quintais 108(11):573574.
Normanha, E. S., A. S. Pereira, and E. S. Freire. 1968. Modo e época de aplicação de adubos minerais em cultura de mandioca. Bragantia 27(12):143154.
Normanha, E. S., and A. S. Pereira. 1950. Aspectos agronómicos da cultura de mandioca, Manihot utilissima, Pohl. Bragantia 10(7):179202.
Nunes, Da O., et al. 1974. Resposta da mandioca a adubação mineral e a métodos de aplicação do potássio em solos de baixa fertilidade. Pesquisa Agropecuária Brasileira 9(9):19.
Obigbesan, G. O. 1973. The influence of potassium nutrition on the yield and chemical composition of some tropical root and tuber crops. International Potash Institute, Coloquim, 10th, Abidjan, Ivory Coast. 439451.
Obigbesan, G. O. 1977b. Investigations on Nigerian root and tuber crops. Response of cassava cultivars to potassium fertilizer in Western Nigeria. J. of Agricultural Science 89:2327.
Obigbesan, G. O., A. O. Ketiku, and A. A. Fayemi. 1977. Effects of age at harvest and fertilizer application on the yield, available carbohydrates and hydrocyanic acid content of cassava, Manihot palmata, Pohl. J. of Argicultural Science 88:679681. Cambridge.
Obigbesan, G. O., and A. A. Fayemi. 1976. Investigations on Nigeria root and tuber crops. Influence of nitrogen fertilization on the yield and chemical composition of two cassava cultivars, Manihot esculenta. J. of Agricultural Science 86(2):401406. U. K.
Obigbesan, G. O., and E. O. Matuluko. 1977. Effect of potassium and bacterial blight on the yield and chemical composition of cassava cultivars. Proceedings of the 4th Symposium of the International Society for Tropical Root Crops, Cali, Colombia, ed. by J. H. Cock, R. MacIntyre, and M. Graham, 185188. Ottawa, Canada: IDRC. IDRC-080e.
Okigbo, B. N. 1976a. IITA Annual report, 90. Ibadan, Nigeria: IITA.
Onwueme, I. C. 1978b. Cassava. The tropical tuber crops. Chichester, England: John Wiley and Sons. 234 pg.
Payne, H., and D. C. Webster. 1968. The toxicity of cassava varieties on two Jamaican soil types of differing potassium status. Kingston, Jamaica: Ministry of Agriculture and Fisheries, Crop Agronomy Division. 3 pg.
Peixoto, A. R. 1963. Mandioca. Rio de Janeiro, Brasil: Ministério de Agricultura, Serviço de Informação Agricola, Productos Rurais 5. 36 pg.
Puschendorf, J. 1972. Resultado de los ensayos de campo con yuca en el Valle de Sula, Honduras. Tegucigalpa, Honduras: Ministerio de Recursos Naturales/FAO. 43 pg.
Rapport 1960. 1961. Lac Alaotra: Station Agronomique du Lac Alaotra, Division dAmelioration des Plantes, Section Manioc. 45 pg.
Ribeiro Filho, J. 1966. Cultura da mandioca. Viçosa, Brasil: Univ. Rural do Estado de Minas Gerais, Escola Superior de Agricultura. 80 pg.
Rodríguez J., M. 1975. Fertilización de la yuca. Curso sobre producción de yuca, 119123. Medellín: Instituto Colombiano Agropecuario, Regional 4.
Rojo B., C. 1976. Consideraciones agrológicas relacionadas con el cultivo de la yuca. Pensamiento Agrario 1(2):1417.
Rosenthal, F. R. T. 1976. A cultura da mandioca. Informativo do INT 9(10):2736.
Samuels, G. 1970. The influence of fertilizer levels and sources on cassava production on lares caly in Puerto Rico. Proceedings of the seventh Annual Meeting C.F.C.S., 3336. Martinique, Guadeloupe.
Santana, A. M. 1974. Fertilição da mandioca no noroeste brasileiro. Projeto mandioca; subprojetos de pesquisas para o nordeste do Brasil, 5175. Cruz das Almas, Brasil: Univ. Federal da Bahia, Escola de Agronomia. Convênio U.F.Ba./BRASCAN Nordeste.
Santana, A. M., J. E. B. Carvalho, and I. O. Borges. 1975. Competição de fontes de nitrogenio em solos para mandioca. Cruz das Almas, Brasil: Univ. Federal Bahia, Escola de Agronomia/BRASCAN Nordeste. Série Pesquisa 1(1):3955.
Schmitt, J. 1955. Cultivo abundante y explotación industrial de la yuca. Suelo Tico 8(34):152158.
Shanmugan, A., and C. Srinivasan. 1973. Yield increasing techniques for tapioca and sweet potato. Rural India 37(78):125126.
Shanmugavelu, K. G., et al. 1973. Effect of certain growth regulants on tapioca. South Indian Horticulture 21(3):119122.
Silva, J. R. da. 1970. O programa de investigação sôbre mandioca no Brasil. Encontro de Engenheiros - Agronômos Pesquisadores de Mandioca dos Paises Andinos e do Estado de São Paulo, 1o, 5972. Campinas, Brasil: Instituto Agronômico do Estado de São Paulo.
Silva, J. R. da. 1971. O programa da mandioca no Instituto Agronômico de Estado de São Paulo. Agronômico 23:4971. Brasil.
Silva, J. R. da, and E. S. Freire. 1968a. Bragantia 27:291.
Silva, J. R. da, and E. S. Freire. 1968b. Efeito de doses crescentes de nitrogenio, fósforo e potássio sobre a produção de mandioca em solos de baixa e alta fertilidade. Bragantia 27(29):357364.
Silva, R. F. E. 1938. Notas sôbre a cultura da mandioca. Revista da Sociedade Rural Brasileira 18(220):3237.
Silva, R. F. E. 1942. Notas sôbre a cultura da mandioca. Brasil: Ministério da Agricultura, Secção de Publicidade. 11 pg.
Takyi, S. K. 1974a. Effects of nitrogen, planting method and seed bed type on yield of cassava, Manihot esculenta, Crantz. Ghana J. of Agricultural Science 7(2):6973.
Takyi, S. K. 1974b. Fertilizer planting date and growth period effects on yields of cassava, Manihot esculenta, Crantz, in three ecological zones in Ghana. Ghana J. of Agricultural Science 7(3):185190.
Tan, K. H., and A. R. Bertrand. 1972. Cultivation and fertilization of cassava. A literature review and research recommendations on cassava, Manihot esculenta, Crantz, ed. by C. H. Hendershott, et al., 3775. Athens, Ga.: Univ. of Georgia.
Tavares, F. D., and M. S. de Azevedo. 1975. Solos do Planalto de Cruz das Almas. Cruz das Almas, Brasil: Univ. Federal da Bahia, Escola de Agronomia/BRASCAN Nordeste. Série Pesquisa 1(1):5763.
Tribuzi, H. S. 1964. Mandioca se cultiva assim. Granja 20(198):3941. Brasil.
Tulalamba, Pol., and Major General Mora. 1970. Tapioca production problems. The Thai Tapioca Trade Association Yearbook, 19681969. Bangkok, Thailand.
Vijaya, M. R., and R. S. Aiyer. 1969. Effect of nitrogen and phosphorus on the yield and quality of cassava. Agricultural Research J. Kerala 7:8490.
Vine, P. N. 1980. Growth and development of cassava, Manihot esculenta, Crantz, in relation to soil physical conditions. Ph.D. dissertation. St. Augustine, Trinidad: Univ. of the West Indies, Department of Soil Science.
Wade, M. K., and P. A. Sanchez. 1976. Multiple cropping experiment. Agronomic-economic research on tropical soils. Annual Report for 1975, 137152. Raleigh, N.C.: N.C. State Univ., Soil Science Department.
Yong, C. W. 1970. Malaysian Agricultural J. 47:483.
Zschernitz, K. 1974. Fertilizer in the improvement of shifting cultivation. Soils Bulletin (FAO) 24:203216.