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Cardoso Arango, Juan AndrésPineda, MarcelaJiménez Serna, Juan de la CruzVergara, Manuel FernandoRao, Idupulapati M.[Contrasting strategies to cope with drought conditions by two tropical forage C4 grasses]Contrasting strategies to cope with drought conditions by two tropical forage C4 grasses

En el Ecoparque Cerro de la Bandera, zona dedicada muchos años a la explotación carbonífera, se evaluó el efecto de dicha práctica sobre propiedades fisicoquímicas y flora microbiana de sus suelos. En tres zonas, bosque nativo (BP); zona intervenida en proceso de regeneración (BS); Zona erosionad...


Zapata, CFSánchez de Prager, MarinaAzakawa, NM[Indicadores de actividad biológica en suelos con diferentes grados de intervención en el Ecoparque Cerro de la Bandera]Indicadores de actividad biológica en suelos con diferentes grados de intervención en el Ecoparque Cerro de la Bandera

A short-term improved fallow system based on forage legumes for enhancing crop and livestock components of mixed farming systems was tested in the subhumid zone of West Africa. As part of the evaluation, the ability of 11 legume species (Centrosema macrocarpum, C. pubescens, Stylosanthes guianens...


Muhr, LTarawali, Shirley A.Peters, MichaelSchultze-Kraft, Rainer[Forage legumes for improved fallows in agropastoral systems of subhumid West Africa. II. Green manure production and decomposition after incorporation into the soil]Forage legumes for improved fallows in agropastoral systems of subhumid West Africa. II. Green manure production and decomposition after incorporation into the soil

Carbon storage and sequestration in tropical mountain forests and their dependence on elevation and temperature are not well understood. In an altitudinal transect study in the South Ecuadorian Andes, we tested the hypotheses that (i) aboveground net primary production (ANPP) decreases continuous...


Moser, GLeuschner, CHertel, DGraefe, S.Soethe, NIost, S[Elevation effects on the carbon budget of tropical mountain forests (S Ecuador): The role of the belowground compartment]Elevation effects on the carbon budget of tropical mountain forests (S Ecuador): The role of the belowground compartment

Inadequate nitrogen nutrition is a major constraint to the performance of common bean (Phaseolus vulgaris L.) in sub-Saharan Africa. Twenty six lines selected for good performance under N-limiting conditions were further evaluated at two locations in Uganda to determine the mechanisms allowing go...


Wortmann, Charles S.Silver-Rwakaikara, MLynch, J[Efficiency of nitrogen acquisition and utilisation in common bean in Uganda]Efficiency of nitrogen acquisition and utilisation in common bean in Uganda

The effect of different types of land management on the soil macrofauna of the savanna has been assesed using the T.S.B.F. method. Macrofauna of the forest and savanna has a high density (4293 and 2830 ind.m(2)) and moderate biomass (13.6 and 15.3 g.m(-2)). Traditional grazing significantly incre...


Decaëns, ThibaudLavelle, Patrick M.Jiménez Jaén, J.J.Escobar, G.Rippstein, G[Impact of land management on soil macrofauna in the Oriental Llanos of Colombia]Impact of land management on soil macrofauna in the Oriental Llanos of Colombia
Autor: Grollier, C

Estern Colombia, the Llanos, is constituted of broad grass formations. These big expanses of savannahs present a huge potential for extensive bovine breeding. Unfortunately, these natural pastures have a low productivity and a feeble quality, due to low fertility soils with a deficiency in phosph...


Grollier, C[Caracterisation des savanes d`une region des Llanos Orientaux de Colombie : Memoire de fin d`etudes, Cali, Colombie du 26 juin 1994 au 7 novembre 1994]Caracterisation des savanes d`une region des Llanos Orientaux de Colombie : Memoire de fin d`etudes, Cali, Colombie du 26 juin 1994 au 7 novembre 1994
Rosero Valencia, DF[Evaluación, producción y calidad del forraje de yuca Manihot esculenta Crantz con corte periódico manual. Tesis (Ingeniero Agrónomo)]Evaluación, producción y calidad del forraje de yuca Manihot esculenta Crantz con corte periódico manual. Tesis (Ingeniero Agrónomo)

Variability in woody plant species, vegetation assemblages and anthropogenic activities derails the efforts to have common approaches for estimating biomass and carbon stocks in Africa. In order to suggest management options, it is important to understand the vegetation dynamics and the major dri...


Tamene, LulsegedMponela, PowellSileshi, Gudeta W.Chen, JiehuaTondoh, Jérôme E.[Spatial variation in tree density and estimated aboveground carbon stocks in Southern Africa]Spatial variation in tree density and estimated aboveground carbon stocks in Southern Africa

Crop response, tree biomass production and changes in soil fertility characteristics were monitored in a long-term (1986–2002) alley-cropping trial in Ibadan, Nigeria. The systems included two alley cropping systems with Leucaena leucocephala and Senna siamea on the one hand and a control (no-tre...


Vanlauwe, BernardDiels, J.Sanginga, NteranyaMerckx, R.[Long-term integrated soil fertility management in South-western Nigeria : Crop performance and impact on the soil fertility status]Long-term integrated soil fertility management in South-western Nigeria : Crop performance and impact on the soil fertility status

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