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Fisher, Myles J.Rao, Idupulapati M.Lascano, Carlos E.Thomas, Richard J.Vera, Raúl R.Ayarza, Miguel Angel[Pasture soils as carbon sink]Pasture soils as carbon sink

De acuerdo con las demográficas actuales, se prevé que la población en América tropical se duplicara en los próximos 25 años; como consecuencia, habrá mayor demanda de carne y leche, la cual podrá satisfacerse solo aumentando la producción agropecuaria. Estos factores aumentaran la presión sobre ...


Ayarza, Miguel AngelRao, Idupulapati M.Thomas, Richard J.[Reciclaje de nutrimentos en pastizales tropicales de suelos ácidos]Reciclaje de nutrimentos en pastizales tropicales de suelos ácidos
Friesen, Dennis K.Rao, Idupulapati M.Thomas, Richard J.Oberson, AstridSanz Scovino, José Ignacio[Phosphorus acquisition and cycling in crop and pasture systems in low fertility tropical soils]Phosphorus acquisition and cycling in crop and pasture systems in low fertility tropical soils

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
Qadir, ManzoorNoble, A.D.Schubert, S.Thomas, Richard J.Arslan, A.[Sodicity-induced land degradation and its sustainable management: Problems and prospects]Sodicity-induced land degradation and its sustainable management: Problems and prospects

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

It is widely believed that tropical soils (mainly Oxisols) have excellent physical characteristics such as high infiltration rates, high permeability of water, good and stable soil structure and that consequently, they can support mechanized agriculture. However in the Eastern Plains (Llanos Orie...


Amézquita Collazos, EdgarThomas, Richard J.Rao, Idupulapati M.Molina Lopez, DLHoyos Garcés, Phanor[Use of deep-rooted tropical pastures to build-up an arable layer throught improvement soil properties of an oxisol in the Eastern Plains (Llanos Orientales) of Colombia]Use of deep-rooted tropical pastures to build-up an arable layer throught improvement soil properties of an oxisol in the Eastern Plains (Llanos Orientales) of Colombia
Jiménez Jaén, J.J.Thomas, Richard J.[Nature's plow: soil macroinvertebrate communities in the neotropical savannas of Colombia]Nature's plow: soil macroinvertebrate communities in the neotropical savannas of Colombia

Food security concerns and the scarcity of new productive land have put productivity enhancement of degraded lands back on the political agenda. In such a context, salt-affected lands are a valuable resource that cannot be neglected nor easily abandoned even with their lower crop yields, especial...


Qadir, ManzoorQuillérou, E.Nangia, V.Murtaza, G.Singh, M.Thomas, Richard J.Drechsel, PayNoble, A.D.[Economics of salt-induced land degradation and restoration]Economics of salt-induced land degradation and restoration

The increasing attention paid to local soil knowledge results from a greater recognition that farmer knowledge can offer many insights into the sustainable management of tropical soils and that the integration of local and technical knowledge systems helps extension workers and scientists work mo...


Barrios, E.Delve, Robert J.Bekunda, Mateete A.Mowo, J.Agunda, JRamisch, Joshua J.Trejo Tercero, M.T.Thomas, Richard J.[Indicators of soil quality: a South-South development of a methdological guide for linking local and technical knowledge]Indicators of soil quality: a South-South development of a methdological guide for linking local and technical knowledge

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