The effects of a large species of anecic earthworm, Martiodrilus carimaguensis Jiménez and Moreno, on soil C and N dynamics were investigated in a native savanna and a man-made pasture of the eastern plains of Colombia. We compared, across time (11 months), the total C, total N, NH+ 4 and NO– 3 c...
Decaëns, Thibaud
,
Rangel Becerra, AF
,
Asakawa, N.
,
Thomas, Richard J.
,
[Carbon and nitrogen dynamics in ageing earthworm casts in grasslands of the eastern plains of Colombia]
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Carbon and nitrogen dynamics in ageing earthworm casts in grasslands of the eastern plains of Colombia
Barrios, Edmundo
,
Cobo Borrero, Juan G.
,
Rao, Idupulapati M.
,
Thomas, Richard J.
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Amézquita Collazos, Edgar
,
Jiménez Jaén, Juan José
,
Rondón, Marco Antonio
,
[Fallow management for soil fertility recovery in tropical Andean agroecosystems in Colombia]
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Fallow management for soil fertility recovery in tropical Andean agroecosystems in Colombia
Fisher, Myles J.
,
Rao, Idupulapati M.
,
Thomas, Richard J.
,
Lascano, Carlos E.
,
[Grasslands in the well-watered tropical lowlands]
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Grasslands in the well-watered tropical lowlands
Rao, Idupulapati M.
,
Ayarza, Miguel Angel
,
Thomas, Richard J.
,
Fisher, Myles J.
,
Lascano, Carlos E.
,
Borrero, V.
,
[Adaptation responses of tropical grass-legume associations to acid soils]
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Adaptation responses of tropical grass-legume associations to acid soils
Decaëns, Thibaud
,
Rangel Becerra, AF
,
Thomas, Richard J.
,
Asakawa, N.
,
Thomas, Richard J.
,
[Dinámica del carbono y del nitrógeno en las heces de diferente edad depositadas por lombrices en áreas de sabana y de pastizal en los Llanos Orientales de Colombia]
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Dinámica del carbono y del nitrógeno en las heces de diferente edad depositadas por lombrices en áreas de sabana y de pastizal en los Llanos Orientales de Colombia
Lopes, A
,
Ayarza, Miguel Angel
,
Thomas, Richard J.
,
[Sistemas agropastoriles en las sabanas de América Tropical: lecciones del desarrollo agrícola de los Cerrados de Brasil]
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Sistemas agropastoriles en las sabanas de América Tropical: lecciones del desarrollo agrícola de los Cerrados de Brasil
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 Angel
,
Rao, Idupulapati M.
,
Thomas, Richard J.
,
[Reciclaje de nutrimentos en pastizales tropicales de suelos ácidos]
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Reciclaje de nutrimentos en pastizales tropicales de suelos ácidos
Friesen, Dennis K.
,
Rao, Idupulapati M.
,
Thomas, Richard J.
,
Oberson, Astrid
,
Sanz Scovino, José Ignacio
,
[Phosphorus acquisition and cycling in crop and pasture systems in low fertility tropical soils]
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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 Angel
,
Thomas, Richard J.
,
[The use of carbon isotope ratios to evaluate legume contribution to soil enhancement in tropical pastures]
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The use of carbon isotope ratios to evaluate legume contribution to soil enhancement in tropical pastures
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, J
,
Ramisch, 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]
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Indicators of soil quality: a South-South development of a methdological guide for linking local and technical knowledge