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Gichuru, MPBationo, B. AndréBekunda, Mateete A.Goma, HCMafongoya, P.L.Mugendi, DNMurwira, HKNandwa, SMNyathi, PSwift, MJ[Soil fertility management in Africa: a regional perspective]Soil fertility management in Africa: a regional perspective

In the Brazilian savannas, or Cerrados the rapid advance in agriculture and cattle ranching is affecting soils through, for example, accelerated erosion and depletion of soil organic matter (SOM). Changes in soil microbial biomass are good indicators of changes in SOM. We therefore assessed the e...


Renz, TENeufeldt, HenryAyarza, Miguel AngelResck, DVSZech, W.[Microbial biomass, microbial activity, and carbon pools under different land-use systems in the Brazilian cerrados]Microbial biomass, microbial activity, and carbon pools under different land-use systems in the Brazilian cerrados
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
Rao, Idupulapati M.Barrios, E.Oberson, AstridAyarza, Miguel AngelFriesen, Dennis K.[Opportunities for increasing the efficiency of phosphorus use in tropical agroecosystems]Opportunities for increasing the efficiency of phosphorus use in tropical agroecosystems

Animal traction has been an integral part of most agricultural systems in Ethiopia for thousands of years. There is evidence that cattle were first used for ploughing in the latter part of the third millennium BC (Goe and Astatke, 1989). Today, the traditional cattle economy is directed mainly to...


Astatke, A.Mohamed-Saleem, M.A.[Draught animal power for land-use intensification in the Ethiopian highlands]Draught animal power for land-use intensification in the Ethiopian highlands

Soils used for rainfed cereal production in Niger are sandy, deficient in major nutrients (N and P), and also low in organic matter content. Scarce rainfall with an unpredictable distribution in space and time makes crop and nutrient management difficult. Observations were made in 1996 and 1997...


Gandah, M.Bouma, JetskeBrouwer, J.Hiernaux, Pierre H.Y.Duivenbooden, N. van[Strategies to optimize allocation of limited nutrients to sandy soils of the Sahel: A case study from Niger, West Africa]Strategies to optimize allocation of limited nutrients to sandy soils of the Sahel: A case study from Niger, West Africa

Ecological restoration through exclosure establishment has become an increasingly important approach to reversing degraded ecosystems in rangelands worldwide. The present study was conducted in northwestern Ethiopia where policy programs are aiming to restore degraded lands. Changes in soil prope...


Mekuria, Wolde M.Langan, Simon J.Noble, A.D.Johnston, Robyn M.[Soil restoration after seven years of exclosure management in northwestern Ethiopia]Soil restoration after seven years of exclosure management in northwestern Ethiopia

The distribution of Trichoderma species in soils of Embu region in relation to land use practices was investigated. The study area was chosen because of its significant land use intensification. Soil washing and dilution plate techniques were used to recover Trichoderma spp from soil samples. The...


Okoth, Sheila A.Roimen, HMutsotso, BMuya, EAKahindi, JHPOwino, JOOkoth, Peter F.[Land use systems and distribution of Trichoderma species in Embu region, Kenya = Relación entre uso del suelo y la distribución de Trichoderma en la región de Embu, Kenia]Land use systems and distribution of Trichoderma species in Embu region, Kenya = Relación entre uso del suelo y la distribución de Trichoderma en la región de Embu, Kenia

En dos zonas de ladera al norte del Departamento del Cauca, con precipitación promedia anual entre 1600 y 2400 mm y en suelos clasificados como Inceptisoles, se han establecido parcelas de escorrentía con diferentes manejos durante siete años. En muestras de suelos procedentes de estos manejos se...


Castillo Franco, JAAmézquita Collazos, EdgarMuller-Samann, KM[La turbidimetría una metodología promisoria para caracterizar la estabilidad estructural de los suelos = Turbidimetry a promising method to characterize the structural stability of soils]La turbidimetría una metodología promisoria para caracterizar la estabilidad estructural de los suelos = Turbidimetry a promising method to characterize the structural stability of soils

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