INFLUENCE OF DIFFERENT FALLOW MANAGEMENT SYSTEMS ON STABILITY OF SOIL AGGREGATES IN SOUTHERN NIGERIA^†

REFERENCES

• Wilson , G. F. and Lal , R. 1986 . “ New Concepts for Post-Clearing Land Management in the Tropics ” . In Land Clearing and Development in the Tropics Edited by: Lal , R. , Sanchez , P. A. and Cummings , R. W. 371 – 381 . Rotterdam , , Netherlands : A.A. Balkerma .
   Google Scholar
• Kang , B. T. , Reynolds , L. and Atta-Krah , A. N. 1990 . Alley Farming . Adv. Agron. , 43 : 315 – 359 .
   Web of Science ®Google Scholar
• Szott , L. T. , Palm , C. A. and Sanchez , P. A. 1991 . Agroforestry in Acid Soils of the Humid Tropics . Adv. Agron. , 45 : 275 – 301 .
   Web of Science ®Google Scholar
• Harris , R. F. , Chesters , G. and Allen , O. N. 1966 . Dynamics of Soil Aggregation . Adv. Agron. , 18 : 107 – 169 .
   Google Scholar
• Oades , J. M. 1993 . The Role of Biology in the Formation, Stabilization and Degradation of Soil Structure . Geoderma , 56 : 377 – 400 .
   Web of Science ®Google Scholar
• Hedge , D. M. , Manjunathaiah , H. M. , Gumaste , S. K. and Renukarya , M. K. 1978 . Effect of Different Grasses Grown with Varying Spacings on Some Physical and Chemical Properties of Red Soil . J. Indian Soc. Soil Sci. , 26 : 17 – 19 .
   Google Scholar
• Mapa , R. B. and Gunasena , H. P. M. 1995 . Effect of Alley Cropping on Soil Aggregate Stability of a Tropical Alfisol . Agrofor. Syst. , 32 : 237 – 245 .
   Web of Science ®Google Scholar
• Yoder , R. E. 1936 . A Direct Method of Aggregate Analysis of Soils and a Study of Physical Nature of Erosion Losses . J. Am. Soc. Agron. , 28 : 337 – 351 .
   Google Scholar
• Kemper , W. D. and Rosenau , R. C. 1986 . “ Aggregate Stability and Size Distribution ” . In Methods of Soil Analysis: Part 1. Physical and Mineralogical Methods , 2nd Ed. Edited by: Klute , A. 425 – 442 . Madison , WI : ASA-SSSA .
   Google Scholar
• Angers , D. A. and Mehuys , G. R. 1993 . “ Aggregate Stability to Water ” . In Soil Sampling and Methods of Analysis Edited by: Carter , M. R. 651 – 657 . Boca Raton , FL : Lewis Publishers .
   Google Scholar
• Perfect , E. and Kay , B. D. 1991 . Fractal Theory Applied to Soil Aggregation . Soil Sci. Soc. Am. J. , 55 : 1552 – 1558 .
   Web of Science ®Google Scholar
• Anderson , A. N. , McBratney , A. B. and Crawford , J. W. 1998 . Applications of Fractals to Soil Studies . Adv. Agron. , 63 : 1 – 76 .
   Web of Science ®Google Scholar
• Salako , F. K. , Babalola , O. , Hauser , S. and Kang , B. T. 1999 . Soil Macroaggregate Stability Under Different Fallow Management Systems and Cropping Intensities in South-western Nigeria . Geoderma , 91 : 103 – 123 .
   Web of Science ®Google Scholar
• Gijsman , A. J. 1996 . Soil Aggregate Stability and Organic Matter Fractions Under Agropastoral Systems Established in Native Savanna . Aust. J. Soil Res. , 34 : 891 – 907 .
   Web of Science ®Google Scholar
• Sutherland , R. A. and Ziegler , A. D. 1997 . A New Approach to Determining Water Stable Aggregation . Commun. Soil. Sci. Plant Anal. , 28 : 1871 – 1887 .
   Web of Science ®Google Scholar
• Jastrow , J. D. and Miller , R. M. 1991 . Methods of Assessing the Effects of Biota on Soil Structure . Agric. Ecosyst. Environ. , 34 : 279 – 303 .
   Web of Science ®Google Scholar
• Russell , M. B. and Feng , C. L. 1947 . Characterization of the Stability of Soil Aggregates . Soil Sci. , 63 : 299 – 304 .
   Web of Science ®Google Scholar
• Beare , M. H. and Bruce , R. R. 1993 . A Comparison of Methods for Measuring Water-Stable Aggregates: Implications for Determining Environmental Effects on Soil Structure . Geoderma , 56 : 87 – 104 .
   Web of Science ®Google Scholar
• Raine , S. R. and So , H. B. 1997 . An Investigation of the Relationships Between Dispersion, Power, and Mechanical Energy Using the End-over-end Shaking and Ultrasonic Methods of Aggregate Stability Assessment . Aust. J. Soil Res. , 35 : 41 – 53 .
   Web of Science ®Google Scholar
• Haynes , R. J. 1993 . Effect of Sample Pretreatment on Aggregate Stability Measured by Wet Sieving or Turbidimetry on Soils of Different Cropping History . J. Soil Sci. , 44 : 261 – 270 .
   Web of Science ®Google Scholar
• Lal , R. 1992 . Tropical Agricultural Hydrology and Sustainability of Agricultural Systems: The West Bank Project (1978–1988) Columbus , OH : Ohio State University/International Institute of Tropical Agriculture .
   Google Scholar
• Kang , B. T. , Salako , F. K. , Akobundu , I. O. , Pleysier , J. L. and Chianu , J. N. 1997 . Amelioration of a Degraded Oxic Paleustalf by Leguminous and Natural Fallows . Soil Use Mgt. , 13 : 130 – 136 .
   Web of Science ®Google Scholar
• Jones , E. W. 1955 . Ecological Studies on the Rainforest of Southern Nigeria: IV. The Plateau Forest of the Okomu Forest Reserve . J. Ecol. , 43 : 564 – 574 .
   Web of Science ®Google Scholar
• Ghuman , B. S. and Lal , R. 1987 . Effects of Partial Clearing on Microclimate in a Humid Tropical Forest . Agric. For. Meteorol. , 40 : 17 – 29 .
   Web of Science ®Google Scholar
• Ghuman , B. S. , Lal , R. and Shearer , W. 1991 . Land Clearing and Use in the Humid Tropics: I. Soil Physical Properties . Soil Sci. Soc. Am. J. , 55 : 178 – 183 .
   Web of Science ®Google Scholar
• Gee , G. W. and Bauder , J. W. 1986 . “ Particle-Size Analysis ” . In Methods of Soil Analysis: Part 1. Physical and Mineralogical Methods , 2nd Ed. Edited by: Klute , A. 383 – 411 . Madison , WI : ASA-SSSA .
   Google Scholar
• 1979 . “ IITA ” . In Selected Methods for Soil and Plant Analysis , Manual Series No. 1. Ibadan , , Nigeria : International Institute of Tropical Agriculture .
   Google Scholar
• Anderson , J. M. and Ingram , J. S. L. , eds. 1993 . Tropical Soil Biology and Fertility: A Handbook of Methods , 2nd Wallingford , , England : CAB International .
   Google Scholar
• Chatterjee , S. and Price , B. 1991 . Regression by Example , 2nd Ed. New York : John Wiley & Sons .
   Google Scholar
• Hinkelmann , K. and Kempthorne , O. 1994 . Design and Analysis of Experiments: Volume I. Introduction to Experimental Design New York : John Wiley & Sons .
   Google Scholar
• 1990 . “ SAS Institute ” . In SAS/STAT User's Guide , Version 6, 4th Ed. Cary , NC : SAS Institute .
   Google Scholar
• Mazurak , A. P. 1950 . Effect of Gaseous Phase on Water-stable Synthetic Aggregates . Soil Sci. , 69 : 135 – 148 .
   Web of Science ®Google Scholar
• Gardner , W. R. 1956 . Representation of Aggregate-Size Distribution by a Logarithmic-Normal Distribution . Soil Sci. Soc. Am. Proc. , 20 : 151 – 153 .
   Google Scholar
• Ahn , P. M. 1979 . “ Microaggregation in Tropical Soils: Its Measurement and Effects on the Maintenance of Soil Productivity ” . In Soil Physical Properties and Crop Production in the Tropics Edited by: Lal , R. and Greenland , D. J. 75 – 657 . Chichester , , England : John Wiley & Sons Ltd. .
   Google Scholar
• Igwe , C. A. , Akamigbo , F. O. R. and Mbagwu , J. S. C. 1995 . Physical Properties of Soils of Southeastern Nigeria and the Role of Some Aggregating Agents in Their Stability . Soil Sci. , 160 : 431 – 441 .
   Web of Science ®Google Scholar