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A field study of cowpea, soybean and maize was made at Ibadan, Nigeria, to determine the uptake of mineral nutrients and quantities removed in crop residues and seed. Concentrations of N, the major cations (K, Ca, Mg and Na) and major anions (P, S and Cl), and the micronutrients (Fe, Mn, Zn and C...


Randall, P.J.Abaidoo, R.C.Hocking, PJSanginga, Nteranya[Mineral nutrient uptake and removal by cowpea, soybean and maize cultivars in West Africa, and implications for carbon cycle effects on soil acidification]Mineral nutrient uptake and removal by cowpea, soybean and maize cultivars in West Africa, and implications for carbon cycle effects on soil acidification
Rodríguez Torres, Isaura VivianaFlores, AJSchultze-Kraft, Rainer[Agronomic potential of Centrosema pubescens in well drained savannas of Anzoátegui state, Venezuela = Potencial agronómico de Centrosema pubescens en condiciones de sabana bien drenada del estado Anzoátegui, Venezuela]Agronomic potential of Centrosema pubescens in well drained savannas of Anzoátegui state, Venezuela = Potencial agronómico de Centrosema pubescens en condiciones de sabana bien drenada del estado Anzoátegui, Venezuela
Iglesias F., Carlos ArielÁlvarez, Elizabeth[Potencial de producción y uso de la yuca en los Llanos Orientales de Colombia]Potencial de producción y uso de la yuca en los Llanos Orientales de Colombia

Results of preliminary experimentation with a computer based simulation model of beef production in theEastern Savannas of Colombia are reported The energetic consequences of various uses of sown pasturesare examined with reference to their long term biological feasibility The quality of grass le...


Thornton, Philip K.[Computer experimentation with an energy-based simulation model of animal production in the eastern savannas of Colombia]Computer experimentation with an energy-based simulation model of animal production in the eastern savannas of Colombia
Zeigler, Robert S.Sarkarung, SurapongSanz, José IgnacioMolina López, Diego Luis[Upland rice germplasm development and production system research at the International Centre for Tropical Agriculture]Upland rice germplasm development and production system research at the International Centre for Tropical Agriculture
Spain, James M.[Los Llanos Orientales de Colombia, zona de grandes posibilidades agropecuarias]Los Llanos Orientales de Colombia, zona de grandes posibilidades agropecuarias
Spain, James M.Lascano, Carlos E.[Estrategias para mejorar la eficiencia de utilización de sabanas nativas en el trópico húmedo]Estrategias para mejorar la eficiencia de utilización de sabanas nativas en el trópico húmedo
Autor: Lenne, J.M.

A stem gall nematode is reported for the first time on the promising tropical pasture legume Desmodium ovalifolium CIAT 350 in Colombia. Stem galling was usually associated with damage caused by animal trampling. The nematode has been identified as a new genus of the family Anguinidae.


Lenne, J.M.[Stem gall nematode on Desmodium ovalifolium in Colombia]Stem gall nematode on Desmodium ovalifolium in Colombia

Sustainable land use in periodically dry Brazilian savannas requires a water-saving management. We hypothesized that the annual course of matric potentials (?M) in very-fine, isohyperthermic Anionic Acrustoxes of Pinus plantations (PI), degraded (DP) and productive pastures (PP), no-till (NT) and...


Lilienfein, JWilcke, W.Ayarza, Miguel AngelLima, SCVilela, LZech, W.[Annual course of matric potential in differently used savanna oxisols in Brazil]Annual course of matric potential in differently used savanna oxisols in Brazil

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, ThibaudRangel Becerra, AFAsakawa, N.Thomas, Richard J.[Carbon and nitrogen dynamics in ageing earthworm casts in grasslands of the eastern plains of Colombia]Carbon and nitrogen dynamics in ageing earthworm casts in grasslands of the eastern plains of Colombia

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