Evaluation of Selected Soil Management Practices and Its Effect on Seed Yield of Soybeans in Gboko, Benue State.

Adeoye, K.B. (1982) Effect of tillage depth and physical properties of a tropical soil and on yield of maize, sorghum and cotton. Soil Tillage Research (2): 225 – 231. Agbede, T.M. and S.O. Ojeniyi (2003) Effects of land preparation method on soil properties and yield of yam grown on Alfisols in Nigeria. Nigeria Journal of Soil Science 13:68-75. Al-darby, A.M. and B. Lowery (1984). Conservation Tillage. A comperition of methods. Agricultural Engineering (65) 10:23-24. AOAC, (1970) Association of Official Agric Chemist. Official methods of Analysis 11 Washington DC. Awodun, M.A. (2007) Effect of Reduced Tillage on Soil properties and Cowpea yield in Rinforest Zone of South West Nigeria. Asia Journal of Agricultural Research 1 (1): 23-26. Bauer, A. and H.I. Kucena (1994). Effect of tillage on some soil Physico Chemical properties on annually cropped spring wheat yield Agricultural Experimental Station North Dakota State University bulletin 506 pp. Black, C.A. (ed). (1965) Methods of Soil Analysis. Agronomy. No. 9 part 2. America Society of Agronomy, Madison, Wisconsin. Boone, F.R. (1988). Weather and other environmental factors influencing crops responses to tillage and traffic. Soil and tillage Research 11: 283-324. Bremmer, J.M. and C.S. Mulvancy (1982). Nitrogen-Total. In Methods of Soil Analysis, Part 2. At A.L. Page et al., (ed) American society of Agronomy Madison W. 1. 595 – 624. Brophy., L.S. and G.H. Heichel (1989). Nitrogen release from roots of alfafa and soybean grown in sand culture. Journal of Plant Soil, 116:77 – 84. Chang, C. and C.W. Lindwal (1990). Composition of the effect of Longterm Tillage and crops Rotation on Physical Properties of a Soil. Canadian Journal of Agriculture Engineering (32): 53 – 55. Chang, C. and C.W. Lindwall (1992). Effect of tillage and Crop rotation on physical Properties of a Soil. Soil and Tillage Research 22:383-389. Chude, V.O. (1998). Understanding Nigerian Soils and their justified Management for Sustainable Agriculture. Inaugural Lecture at ABU Zaria November, 26, 1998. Inaugural lecture Series Ike, I.F. and J.A. Aremu (1990) Soil Physical properties as influenced by Tillage Practices. Samaru Journal of Agriculture Research, 7:67-74. Karlen, D.L., N.C. Wollenhaupt, D.C. Erbach, E.C. Bery, J.B. Swan, N.S. Eash and J.L. Jordal (1994). Long-term tillage effects on soil quality. Soil and Tillage Research 32:313-327. Karlen, D.L., M.J. Mausahl, J.W. Doran, R.G. Clime, R.F. Harris and G.E. Scuman (1997). Soil quality: A concept Definition and framework for Evaluation. Soil Science Society. American Jouranal 61:4-10. Khonke, H, and A.R. Bertrand (1959). Soil Conversation. Mc. GRALL-HILL, BROK Company, London 98 Pp. IITA (1983). International Institute for Tropical Agriculture. Cowpea Research, IITA Information Series N0. 14 Ibadan Nigeria. Lal, R. (1983). Soil conservation techniques in Nigeria. Proceedings of first tillage Symposium Ilorin, Nigeria Pp. 39 – 50. Lar, R. C.W. and D.C. Erbach. (1983) Planter Effects on Soil Properties and Crop Emergence. ASAE Paper No. 83 – 1519. Lombin G. (1987). Fertilizer requirements of the major Cereal Crops in the Nigeria savanna. Towards efficiency and fertilizer use and development in Nigeria. Proceeding of National Fertilizer Seminar Pp. 87 – 95. Maurya, P.R. and R, Lal (1981). Performance of Zero Tillage in wheat and Maize production under difference soil and Climate Conditions in Nigeria. Proceeding of IIA International Conference of International Soil tillage Research Organization Edinburgh, ISTRO, 769- Mbagimi, J.S. and C.P. Bazzoffi (1989). Properties of soil aggregate as influenced by Tillage practices. Soil use and Management 5:180-188. McClean, E.O. (1982). Soil pH and lime requirement. In: Page D.C. (eds) methods of soil analysis part 2 Chemical and Soil Microbial properties. Agronomy Series No. 9 ASA SSSA, Madison. Nelson, D.W. and L.E. Sommers (1982). Total carbon, organic carbon and organic matter. In: A.L. Page (ed). Methods of soil analysis part 2. Agronomy Monograph No. 9 American Society of Agronomy Madison, W. 1 539-579. Obi, C.O., P.C. Nnabude and E. Onuoha (2005). Effect of kitchen Waste Compost and Tillage on Soil Chemical Propertied and Yield of okra. Nigeria Journal of Soil Science 15(2) 69 – 76. Odofin A.J. (2005). Effect of no-tillage with mulch on soil moisture condition penetration resistance and maize Performance in Minna Area of Nigeria. Southern Guinea Savanna. Nigeria Journal of Soil Science 15(2) 1 – 8. Ofori, S (1993). Advances in Agronomy 44:563-567. Ogbam, P.I., W.N. Ogunewe, R.I. Dile, A.C. Ajaelo, N.I. Ikeata, U.E. Achnumba and E.E. Nyong (2007). Effect of tillage and mulching Practices on soil Properties and growth and yield of cowpea (Vigna unguiculata) (L), in South eastern Nigeria. Proceedings of the 31st Annual Conference of the soil Science of Nigeria, 13 – 17th November 2006 Ahmadu Bello University Zaria 199-211. Ohiri, A.C. and H.C. Ezuma (1990). Tillage effects on Cassava (Manihut esculenta) production and some soil properties. Soil Tillage Research 17:221-229. Ojeniyi, S.O., 91986) Effects of zero tillage and disc Ploughing on soil water temperature and growth and yield of maize (zea mays) Soil and Tillage Research. 7:173 – 182. Ojeniyi, S.O. (1990). Effect of Bush clearing and tillage and disc Ploughing on soil water temperature and growth and yield of maize (Zea mays) Soil and Tillage Research. 7:173- Ojeniyi, S.O. (1990). Effect of Bush clearing and tillage methods on soil Physical and Chemical propertied of humid Tropical Alfisol. Soil and Tillage Research 15:269-277. Ojeniyi, S.O. and A.A. Agboola (1995). A review of tillage requirement of food crops in Africa. African Soils. 28:255-266. Ojeniyi, S.O. A.O. Adetoro and S.A. Odedina (1999). Effect of Monorial tillage methods on soil density, Mositure content and cowpea yield. Journal of Agricultural Technology 7:16-19. Opera-Nadi, O.A. (1990). Tillage practices and their effect on soil productivity. In: Organic-matter management and tillage in Humid and sub-humid Africa. IBSRAM. Proceeding No. 10 Bankgkok pp 87-111. Padulsoi, S.G. (1991). Survey of wild Virginian Southern Africa. FAO. Plant Genetic and Resources Newsletter. Philbrook, B.D. and E.S. Oplinger (1989). Soybean seedling rats for reduced tillage. Journal of Production Agric 2:57-62. Place, F.C.B. Barreth, H.B. Freeman, J.J. Ramiscis and B. Vanlauwe (2003). Prospects for integrated Soil fertility management using organic and inorganic inputs: Evidence from small holder African Agricultural systems. Ecosystems and environment 84:28 – 42. Pursglove, J.W. (1968)tpical Crops Dicotyledons. Second Edition, 689 pp Peoples, M.B. D.F. heridge and J.K. Ladha (1950). Bilogical nitrogen Fixation: an efficient source of nitrogen for Sustainable agricultural production. Plant Soill 174:3-28. Singh, S.R. and K.O. Rachie (1987). Soybean for the Tropics. Research, Production and Ultilization. John Willey and Sons Ltd New York, 52 Pp. Singh, S.R. Mohan Rai, D.R. Dashiel K.E.; Jackson L.E.N (ed) (1997). Advances in Cowpea Research. Ibadan IITA 390 Pp.(198 Simpson L.A. and Gums(1985). Comparition of three tillage methods for yield for maize and cowpea production on coastal soils in Guyana. Tropical Agricultural 62 (1): 25 – 29. Sommers, L.E., C.M. Grilmour, R.E. Wildung and S.M.B (1980). Effect of water Potential on decomposition Processes in soils. Water potential relations smicrobiology Spec. Pub. 9 SSSA Maderin WI. Tessier, S.M. Peru, F.B. Dyck, R.P. Zetner and C.A. Campbell (1990). Conservation tillage for spring wheat production in semi arid Saskatchewan. Soil Tillage Research (18): 73 – 89. Elservier Science Publishers B.V. Amsterdam. Troeh, F.R. and L.M. Thompson (1993). Soils and Soil Fertility. Fifth Edition, Oxfo