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Although soil degradation is a major threat to food security and carbon sequestration, our knowledge of the spatial extent of the problem and its drivers is very limited in Southern Africa. Therefore, this study aimed to quantify the risk of soil structural degradation and determine the variation...


Tamene, LulsegedSileshi, Gudeta W.Ndengu, GiftMponela, PowellKihara, JobSila, AndrewTondoh, Jérôme E.[Soil structural degradation and nutrient limitations across land use categories and climatic zones in Southern Africa]Soil structural degradation and nutrient limitations across land use categories and climatic zones in Southern Africa
Towett, Erick K.Shepherd, Keith D.Tondoh, Jérôme E.Winowiecki, Leigh A.Tamene, LulsegedNyambura, MercySila, AndrewVågen, Tor-GunnarCadisch, Georg[Total elemental composition of soils in Sub-Saharan Africa and relationship with soil forming factors]Total elemental composition of soils in Sub-Saharan Africa and relationship with soil forming factors

The Africa Soil Information Service (AfSIS), was a project led by the Tropical Soil Biology and Fertility Institute (TSBF) of the International Center for Tropical Agriculture (CIAT), based in Nairobi, in collaboration with several partners including the World Agroforestry Centre (ICRAF). The AfS...


Winowiecki, Leigh A.Morrison, ScholasticaWeullow, ElvisSila, AndrewVågen, Tor-Gunnar[Near-infrared spectra for the AfSIS Sentinel Sites in Tanzania]Near-infrared spectra for the AfSIS Sentinel Sites in Tanzania

80% of arable land in Africa has low soil fertility and suffers from physical soil problems. Additionally, significant amounts of nutrients are lost every year due to unsustainable soil management practices. This is partially the result of insufficient use of soil management knowledge. To help br...


Hengl, TomislavHeuvelink, Gerard B.M.Kempen, BasLeenaars, Johan G.B.Walsh, Markus GShepherd, Keith D.Sila, AndrewMacMillan, Robert AMendes de Jesus, JorgeTamene, LulsegedTondoh, Jérôme E.[Mapping soil properties of Africa at 250 m resolution: random forests significantly improve current predictions]Mapping soil properties of Africa at 250 m resolution: random forests significantly improve current predictions

Wood density is an important variable for accurate quantification of woody biomass and carbon stocks. Conventional destructive methods for wood density estimation are resource intensive, prohibiting their use, limiting the application of approaches that would minimize uncertainties in tree biomas...


Olale, KennedyYenesew, AbiyJamnadass, Ramni H.Sila, AndrewShepherd, Keith[A simple field based method for rapid wood density estimation for selected tree species in Western Kenya]A simple field based method for rapid wood density estimation for selected tree species in Western Kenya

Mango fruits contain substantial vitamins and dietary fibre. Vitamins vary among and within fruits depending on cultivar type and ripening stage. Conventional techniques of vitamins analysis are based on High Pressure Liquid Chromatography, which are costly and laborious. This study evaluated the...


Olale, KennedyWalyambillah, WaudoMohammed, Salim AliSila, AndrewShepherd, Keith[FTIR-DRIFTS-based prediction of β-carotene, α-tocopherol and L-ascorbic acid in mango (Mangifera indica L.) fruit pulp]FTIR-DRIFTS-based prediction of β-carotene, α-tocopherol and L-ascorbic acid in mango (Mangifera indica L.) fruit pulp

In the West African drylands, SOC sequestration is seen as one of the prominent strategies to both enhance the resilience of agro-ecosystems and mitigate global greenhouse effects. However, there is a dearth of baseline data that impede the design of site-appropriate recommended management practi...


Tondoh, Jérôme E.Ouédraogo, IssaBayala, JulesTamene, LulsegedSila, AndrewVågen, Tor-GunnarKalinganiré, Antoine[Soil organic carbon stocks in semi-arid West African drylands: implications for climate change adaptation and mitigation]Soil organic carbon stocks in semi-arid West African drylands: implications for climate change adaptation and mitigation

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