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Amézquita Collazos, EdgarThomas, Richard J.Rao, Idupulapati M.Molina, D. L.Hoyos, P.[The influence of pastures on soil physical characteristics of an Oxisols in the Eastern Plaines (Llanos Orientales) of Colombia]The influence of pastures on soil physical characteristics of an Oxisols in the Eastern Plaines (Llanos Orientales) of Colombia

The structure and seasonal changes of earthworm communities were evaluated in a natural savanna and in a improved grass-legume pasture in a Colombian oxisol over a period of 18 months. One plot of 90×90 m was isolated in each of the systems and each month five samples of 1 m2×0.5 m and ten of 20×...


Jiménez Jaén, J.J.Moreno, AlonsoDecaëns, ThibaudLavelle, Patrick M.Fisher, Myles J.Thomas, Richard J.[Earthworm communities in native savannas and man-made pastures of the Eastern Plains of Colombia]Earthworm communities in native savannas and man-made pastures of the Eastern Plains of Colombia
Neufeldt, HenryZech, W.Thomas, Richard J.[Introduction: sustainable land management for the oxisols of the Brazilian cerrados]Introduction: sustainable land management for the oxisols of the Brazilian cerrados

Soil carbon distribution with depth, stable carbon isotope ratios in soil organic matter and their changes as a consequence of the presence of legume were studied in three 12-year-old tropical pastures (grass alone Brachiaria decumbens (C4), legume alone Pueraria phaseoloides (C3) and grass + l...


Rao, Idupulapati M.Ayarza, Miguel AngelThomas, Richard J.[The use of carbon isotope ratios to evaluate legume contribution to soil enhancement in tropical pastures]The use of carbon isotope ratios to evaluate legume contribution to soil enhancement in tropical pastures

This study evaluated the effects of improved tropical grass and grass–legume pastures on the physical condition of an oxisol, previously covered by native savanna. Two long-term pasture experiments with different grass and legume species and with different stocking rates were used. Measurements w...


Gijsman, AJThomas, Richard J.[Evaluation of some physical properties of an oxisol after conversion of native savanna into legume-based or pure grass pastures]Evaluation of some physical properties of an oxisol after conversion of native savanna into legume-based or pure grass pastures

Thomas, Richard J.Ayarza, Miguel Angel[Sustainable land management for the oxisols of the Latin American savannas: dynamics of soil organic matter and indicators of soil quality]Sustainable land management for the oxisols of the Latin American savannas: dynamics of soil organic matter and indicators of soil quality

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