ABSTRACT To assess the impact of land use on the Andosol fertility, changes in chemical and physical properties affecting soil quality were monitored on Andosols from Mount Bambouto submitted to four different land use and management systems: natural cover, tillage, burning and fallow. In comparison with the natural cover, tillage reduces Andosol OC (6.5 to 4.8%), total N (4.51 to 2.95‰), CEC (22.0 to 20.9 cmol.kg–1) and the abundance of soil macro-aggregates expressed by the water stable aggregates (WSA) varies from 53.8 to 12.0%; and increases the bulk density (0.69 to 1.09 g.cm–3) and the sum of exchangeable cations (3.58 to 4.84 cmol.kg–1). Burning also reduces Andosol OC (6.5 to 0.8%), total N (4.51 to 0.95‰) and CEC (22.0 to 10.2 cmol.kg–1), but increases soil pH (4.62 to 6.54), the sum of exchangeable cations (3.58 to 5.74 cmol.kg–1) and the abundance of soil macroaggregates (WSA: 38.2 to 57.0%). In comparison with tillage, fallow increases Andosol OC (4.8 to 6.5%), total N (2.95 to 5.04‰), CEC (18.0 to 21.6 cmol.kg–1), the sum of exchangeable cations (3.58 to 5.05 cmol.kg–1) and the abundance of soil macroaggregates (WSA: 12.0 to 48.8%). Globally, the tillage management deteriorates Andosol chemical and physical properties affecting fertility, whereas the fallow management restores them. The burning management also improves some Andosol chemical and physical properties affecting quality, but it won’t last long.
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nullTematio, P. , Tsafack, E. and Kengni, L. (2011) Effects of tillage, fallow and burning on selected properties and fertility status of Andosols in the Mounts Bambouto, West Cameroon. Agricultural Sciences, 2, 334-340. doi: 10.4236/as.2011.23044.
 Dumanski J. and Pieri C. (2000) Land quality indicators: research plan. Agriculture, Ecosystems and Environment, 81, 93-102.
 Oldeman L. R., Hakkeling R. T. A. and Sombroek W.G. (1990) World Map of Human-induced Soil Degradation. ISRIC, Wageningen, The Netherlands, UNEP, Nairobi.
 Smaling E. M. A., Fresco L. O. and de Jager A. (1996) Classifying monitoring and improving soil nutrient stocks and flows in African agriculture. Ambio, 25, 492- 496.
 Harris F. M. A. (1998) Farm-level assessment of the nutrient balance in northern Nigeria. Agriculture, Ecosystems and Environment, 71, 201-214.
 Tematio P., Kengni L., Bitom D., Hodson M., Fopoussi J. C., Leumbe O., Mpakam H.G. and Tsozué D. (2004) Soils and their distribution on Bambouto volcanic mountain, West Cameroon highland, Central Africa. Journal of African Earth Sciences (JAES), 39, 447-457.
 Tematio P. and Olson K. R. (1997) Impacts of industrialized agriculture on land in Bafou, Cameroon. Journal of Soil and Water conservation, nov./dec., 404-405.
 Blake G. R. (1982) Bulk density. Soil Science Methods of Soil Analysis, Agronomy, vol. 9, part 2, Am. Soc. Agron. Crop. Science, Society of America, Madison, WI, 374- 390.
 Le Bissonnais Y. (1996) Aggregate stability and assessment of soil crustability and erodibility: I. Theory and methodology. European Journal of Soil science, 47, 425- 437.
 Mbagwu J. S. C. and Piccolo A. (1998) Water-dispersible clay in aggregates of forest and cultivated soils in southern Nigeria in relation to organic matter constituents. In: L. Bergstr?m and H. Kirchman, Editors, Carbon and Nutrient Dynamics in Natural and Agricultural Ecosystems, CAB International, United Kingdom, 71-83.
 Spaccini R., Piccolo A., Haberhauer G. and Gerzabek M. (2000) Transformation of organic matter from maize residues into labile and humic fractions of three European soils as revealed by 13C distribution and CPMAS- NMR spectra. Eur. J. Soil Sci., 51, 583-594.
 Davidson E.A. and Ackerman I.L. (1993) Changes in soil carbon inventories following cultivation of previously untilled soils. Biogeochemistry, 20, 161-193.
 Evrendilek F., Celik I. and Kilic S. (2004) Changes in soil organic carbon and other physical soil properties along adjacent Mediterranean forest, grassland, and cropland ecosystems in Turkey. J. Arid Environ., 59, 743- 752.
 Cambardella C.A. and Elliot E.T. (1993) Carbon and nitrogen distributions in aggregates from cultivated and native grassland soils. Soil Sci. Soc. Am. J., 57, 1071- 1076.
 Piccolo A. (1996) Humus and soil conservation. In: A. Piccolo, Editor. Humic Substances in Terrestrial Ecosystems, Elsevier, Amsterdam, 225-264.
 Shoji S., Nanzyo M. and Dahlgren R. A. (1993) Volcanic ash soil: genesis, properties and utilization. Developments in soil science 21, Elsevier Science Publishers, Amsterdam, The Netherlands, 287 p.
 Feller C., Cnoparts L. and Daneetti F. (1987) Effect of different millet straw addition on the low land composition of organic matter in two tropical soils in Senegal. Pedologie, 23, 237-252.
 Six J., Elliott E.T. and Paustian K. (1999) Aggregate and soil organic matter dynamics under conventional and no-tillage systems. Soil Sci. Soc. Am. J., 63, 1350-1358.
 Nobel P.S. (1989) A nutrient index quantifying productivity of agaves and cacti. J. Appl. Ecol., 26, 635-645.
 Sommer R., Vlek P. L. G., de Abreu Sá D., Vielhauer K., de Fátima Rodrigues Coelho R. and F?lster H. (2004) Nutrient balance of shifting cultivation by burning or mulching in the Eastern Amazon: evidence for subsoil nutrient accumulation. Nutr Cycl Agroecosyst, 68, 257- 271.
 Moody P. W. and Aitken R. L. (1997) Soil acidification under some tropical systems: 1. Rates of acidification and contributing factors. Aust. J. Soil Res., 35, 163-173.
 Tate K.R. and Theng B.K.G. (1980) Organic matter and its interactions with inorganic soil constituents In: Soils with variable charge. Soil Bureau Department of Scientific and Industrial Research, New Zealand, 225-244.