Albrecht, A., 1988. Influence du systéme de culture sur é aggrégation d'un vertisol et d'un sol ferrallitique (Antilles). Cahiers ORSTOM, Séries Pedologie 24: 351–353.
Blevins, R.L., D. Cook, and S.H. Phillips, 1971. Influence of notillage on soil moisture. Agron. J. 63: 593–596.CrossRef
Blevins, R.L., G.W. Thomas, and P.L. Cornelius, 1977. Influence of no-tillage and N fertilization on certain soil properties after 5 years of continuous corn. Agron. J. 69: 383–386.CrossRef
Bouwman, A.F. (ed), 1990. Soils and The Greenhouse Effect. J. Wiley & Sons, Chichester, U.K.
Brams, E.A., 1971. Continuous cultivation of West African soils: organic matter diminuition and effects of applied lime and phosphorus. Plant and Soil 53: 401–414.CrossRef
Brown, J.R., 1994. The Sanborn field experiment. In R.A. Leigh and A.E. Johnson (eds) “Long-term Experiments in Agriculture and Ecological Sciences”, CAB International, Wallingford U.K.: 39–51.
Carter, M.R. (ed), 1993. Conservation tillage in temperate agroecosystems. Lewis Publishers, Boca Raton, Fl, 390 pp.
Chan, K.Y. and J.A. Mead, 1988. Surface physical properties of a sandy loam soil under different tillage practices. Aust. J. Soil Res. 26: 549–559.CrossRef
Dalal, R.C., 1989. Long-term effects of no-tillage, crop residue, and nitrogen application on properties of a Vertisol. Soil Sci. Soc. Am. J. 53: 1511–1515.CrossRef
Dalal, R.C., 1992. Long-term trends in total nitrogen of a vertisol subjected to zero-tillage, nitrogen application and stubble retention. Aust. J. Soil Res. 30: 223–231.CrossRef
Datiri, B.C. and B. Lowery, 1991a. Effects of conservation tillage on hydraulic properties of a Griswold silt loam soil. Soil Tillage Res. 21: 243–256.CrossRef
Datiri, B.C. and B. Lowery, 1991b. Effects of conservation tillage on hydraulic properties of a Griswold silt loam soil. Soil Tillage Res. 21: 257–271.CrossRef
Fausey, N.R. and R. Lal, 1992. Drainage-tillage effects on a Crosby-Kokomo soil association in Ohio III. Organic matter content and chemical properties. Soil Technology 5: 1–12.CrossRef
Feller, C., J.L. Chopart, and F. Dancette, 1987. Effet de divers modes de restitution de pailles de mil sur le niveau et al nature du stock organique dans deux sols sableux tropicaux (Senegal). Cahiers ORSTOM, Series Pedologie 24: 237–252.
Fisher, M.J., I.M. Rao, M.A. Ayarza, C.E. Lascano, J.I. Sanz, R.J. Thomas and R.R. Vera, 1994. Carbon storage by introduced deep-rooted grasses in the South American savannas. Nature 371: 236–238.CrossRef
Greenland, D.J., 1972. Adsorption of PVA by oxides and clays with non-expanding lattices. In M. De Boodt (ed) “Fundamentals of Soil Conditioning”, Symp. Proc. 17–21 April, 1972, Gent, Belgium.
Hall, D.O., 1989. Carbon flows in biosphere: present and future. J. Geographical Society 146: 175–181.
Houghton, R.A., J.E. Hobbie, J.M. Melillo, B. Moore, B.J. Peterson, G.R. Shaver and G.M. Woodwell, 1983. Changes in the carbon content of terrestrial biota and soils between 1860 and 1980: a net release of CO2
to the atmosphere. Ecol. Monogr. 53: 235–262.CrossRef
Jenkins, D.S. and A. Ayanaba, 1977. Decomposition of carbon-14 labelled plant material under tropical conditions. Soil Sci. Soc. Am. J. 41: 912–916.CrossRef
Jenkinson, D.S. and J.H. Rayner, 1977. The turnover of soil organic matter in some of the Rothamsted classical experiments. Soil Sci. 123: 298–305.
Johnson, M.G., 1995. The role of soil management in sequestering soil C. In R. Lal et al. (ed) “Soil Management and Greenhouse Effect”, CRC/Lewis Publishers, Boca Raton, Fl.: 351–363.
Johnson, M.G. and J.S. Kern, 1991. Sequestering carbon in soils: A workshop to explore the potential for mitigating global climate change. EPA/600/3-91/031. USEPA, Corvallis, 85 pp.
Juo, A.S.R. and R. Lal, 1978. Nutrient profile in a tropical Alfisol under conventional and no-till systems. Soil Sci. 127: 168–173.
Kang, B.T., G.F. Wilson, and L. Sipkens, 1981. Alley cropping maize with Leucaena in Southern Nigeria. Plant Soil 63: 165–179.CrossRef
Kannegieter, A., 1969. The combination of a short term pueraria fallow, zero cultivation and fertilizer application: Its effects on a following maize crop. Trop. Agr. 125: 1–18.
Karlen, D.L., D.C. Erbach, T.C. Kasper, T.S. Colvin, E.C. Berry and D.R. Timmons, 1990. Soil tilth: a review of past perceptions and future needs. Soil Sci. Soc. Am. J. 54: 153–160.CrossRef
Kemper, B. and R. Derpsch, 1981. Results of studies made in 1978 and 1979 to control erosion by cover crops and no-tillage techniques in Parana, Brazil. Soil Tillage Res. 1: 253–267.CrossRef
Kern, J.S. and M.G. Johnson, 1993. Conservation tillage impacts on national soil and atmospheric carbon levels. Soil Sci. Soc. Am. J. 57: 200–210.CrossRef
Lal, R., 1975. Role of mulching techniques in tropical soil and water management. IITA Tech. Bull. 1, 38 pp.
Lal, R., 1978. Influence of within-and between-row mulching on soil temperature, soil moisture, root development and yield of maize in a tropical soil. Field Crops Res. 1: 127–139.CrossRef
Lal, R., 1979. Influence of six years of no-tillage and conventional plowing on fertilizer response of maize on an Alfisol in the tropics. Soil Sci. Soc. Am. J. 43: 399–403.CrossRef
Lal, R., 1986. Soil surface management in the tropics for intensive land use and high and sustained production. Adv. Soil Sci. 5: 1–105.
Lal, R., 1989. Conservation tillage for sustainable agriculture. Adv. Agron. 42: 85–197.
Lal, R., 1995. The role of residues management in sustainable agricultural systems. J. Sustainable Agric. 5: 51–78.
Lal, R. and B.T. Kang, 1982. Management of organic matter in soils of the tropics and sub-tropics. XII Cong. Int'l Soc. Soil Sci., New Delhi, India: 152–178.
Lal, R. and T.J. Logan, 1995. Agricultural activities and greenhouse gas emissions from soils of the tropics. In R. Lal, J. Kimble, E. Levine and B.A. Stewart (eds) “Soil Management and Greenhouse Effect”, CRC/Lewis Publishers, Boca Raton, Fl: 293–307.
Lal, R., G.F. Wilson, and B.N. Okigbo, 1978. No-tillage farming after various grasses and leguminous cover crops in tropical Alfisols I. Crop performance. Field Crops Res. 1: 71–84.CrossRef
Lal, R., G.F. Wilson, and B.N. Okigbo, 1979. Changes in properties of an Alfisol produced by various crop covers. Soil Sci. 127: 377–382.CrossRef
Lal, R., D. De Vleeschauwer, and R.M. Nganje, 1980. Changes in properties of a newly cleared Alfisol as affected by mulching. Soil Sci. Soc. Am. J. 44: 827–833.CrossRef
Lal, R., T.J. Logan and N.R. Fausey, 1989. Long-term tillage effects on a Mollic Ochraqualf in northwest Ohio. III Soil nutrient profile. Soil Tillage Res. 15: 371–382.CrossRef
Lal, R., J. Kimble, E. Levine and B.A. Stewart (eds), 1995a. Soils and Global Change. CRC/Lewis Publishers, Boca Raton, Fl., 440 pp.
Lal, R. J. Kimble, E. Levine and B.A. Stewart (eds), 1995b. Soil Management and Greenhouse Effect. CRC/Lewis Publishers, Boca Raton, Fl., 383 pp.
Lavelle, P., 1988. Earthworm activities and soil systems. Biol. Fertil. Soils 6: 237–251.CrossRef
Letey, J., 1985. Relationship between soil physical properties and crop production. Adv. Soil Sci. 1: 277–294.
Levey, G.J., 1996. Soil stabilizers. In M. Agassi (ed) “Soil Erosion, Conservation and Rehabilitation”, Marcel Dekker, Inc., New York, 402 pp.
McCown, R.L., G. Haaland, and C. de Hann, 1979. The interaction between cultivation and livestock production in semi-arid Africa. In: A.R. Hall, G.H. Cannell, and H.W. Lawton (eds), Ecological Studies 34, Agriculture in Semi-Arid Environments. Springer-Verlag, Berlin, pp. 297–332.
McCown, R.L., R.K. Jones, and D.C.I. Peake, 1985. Evaluation of a no-till tropical legume ley farming strategy. In: R.C. Muchow (ed), Agro-research for Australias semi-arid tropics, Univ. Qld., Australia, pp. 450–472.
Martins, P.F., C.C. Cerri, B. Volkoff, E. Andreux and A. Chauvel, 1991. Consequency of clearing and tillage on the soil of a natural Amazonian ecosystem. Forest Ecol. Manage. 38: 273–282.CrossRef
Nye, P.H. and D.J. Greenland, 1960. The Soil Under Shifting Cultivation. Technical Communication 51. Commonwealth Bureau of Soils, Harpenden, U.K.
Ohiri, A.C. and H.C. Ezumah, 1990. Tillage effects on cassava production and some soil properties. Soil & Tillage Res. 17: 221–229.CrossRef
Parton, W.J., D.S. Schimel, C.V. Cole, and D.S. Ojima, 1987. Analysis of factors controlling soil organic matter levels in Great Plains grasslands. Soil Sci. Soc. Amer. J. 51: 1173–1179.CrossRef
Pereira, H.C., E.M. Chenery, and W.R. Mills, 1954. The transient effects of grasses on the structure of tropical soils. Emp. J. Exp. Agric. 22: 148–160.
Post, W.M. and L.K. Mann, 1990a. Changes in soil organic carbon and nitrogen as a result of cultivation. In: A.E. Bouwman (ed) “Soils and The Greenhouse Effect”, J. Wiley, Chichester, U.K.
Post, W.M., T. Peng, W.R. Emmanuel, A.W. King, V.H. Dale, and D.L. De Angelis, 1990b. The global carbon cycle. Am. Scient. 78: 310–326.
Prove, B.G., R.J. Loch, J.L. Foley, V.J. Anderson, and D.R. Younger, 1990. Improvements in aggretation and infiltration characteristics of a Krasnozem under maize with direct drill and stubble retention. Aust. J. Soil Res. 28: 577–590.CrossRef
Resck, D.V.S., J. Pereia, and J.E. da Silva, 1991. Dinâmica da matéria orgânica na Regiao dos Cerrados. Documentos 36. Planaltina, Brazil, EMBRAPA, CPAC.
Roth, C.H., B. Meyer, H.G. Frede and R. Derpsch, 1986. The effect of different soybean tillage systems on infiltrability and erosion susceptibility of an Oxisol in Parana, Brazil. J. Agron. Crop Sci. 157: 217–226.CrossRef
Roth, C.H., B. Meyer, H.G. Frede, and R. Derpsch, 1988. Effect of mulch rates and tillage systems on infiltrability and other soil physical properties of an Oxisol in Parana, Brazil. Soil Tillage Res. 11: 81–91.CrossRef
Sidiras, N. and C.H. Roth, 1987. Infiltration measurements with double-ring infiltrometers and a rainfall simulator under different surface conditions on an Oxisol. Soil Tillage Res. 9: 161–168.CrossRef
Sommer, C. and M. Zach, 1992. Managing traffic induced Oxisol compaction by using conservation tillage. Soil Tillage Res. 24: 319–326.CrossRef
Teixeira, L.B. and J.B. Bastos, 1989. Materia organica nos ecosistemas de floresta primária e pastagens na Amezônia Central. EMBRAPA-CPATU, Belem, Brazil, 26 pp.
Thorburn, P.J., 1992. Structural and hydrological changes in a Vertisol under different fallow management techniques. Soil Tillage Res. 23: 341–359.CrossRef
Tisdall, J.M., 1996. Formation of soil aggregates and accumulation of soil organic matter. In M.R. Carter and B.A. Stewart (eds) “Structure and Organic Matter Storage in Agricultural Soils”, CRC/Lewis Publisher, Boca Raton, Fl: 57–95.
Unger, P.W., 1990. Conservation tillage systems. Adv. Soil Sci. 13: 27–68.
Unger, P.W. and J.T. Musick, 1990. Ridge tillage for managing irrigation water on the U.S. Southern Great Plains. Soil Tillage Res. 19: 267–282.CrossRef
Williams, B.G., D.J. Greenland, and J.P. Quirk, 1968. Water stability of natural clay aggregates containing polyvinyl alcohol. Aust. J. Soil Res. 6: 59–66.CrossRef
Wilson, W.S. (ed), 1991. Advances in Soil Organic Matter Research: The Impact of Agriculture and the Environment. Royal Society of Chemistry. Cambridge, U.K., 400 pp.
Woomer, P.L., A. Martin, A. Albrecht, D.V.S. Resck, and H.W. Scharpenseal, 1994. The importance and management of soil organic matter in the tropics. In: P.L. Woomer and M.J. Swift (eds) “The Biological Management of Tropical Soil Fertility”, J. Wiley & Sons, Chichester, U.K.: 47–80.
Young, A., 1976. Tropical soils and soil survey. Cambridge Univ. Press, Cambridge, 467 pp.