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Namirembe, SaraPiikki, KristinSommer, RolfSöderström, MatsTessema, Bezaye Dr.Nyawira, Sylvia Sarah[Soil organic carbon in agricultural systems of six countries in East Africa – a literature review of status and carbon sequestration potential]Soil organic carbon in agricultural systems of six countries in East Africa – a literature review of status and carbon sequestration potential

Amazonian Dark Earths (ADEs) are fertile soils for agricultural production as well as important archaeological resources for understanding the pre-Columbian past of the Neotropical lowland rainforest. ADEs are threatened by expanding land exploitation and there is a need to develop efficient appr...


Söderström, MatsEriksson, JanIsendahl, ChristianPahl Schaand, DeniseStenborg, PerRebellato, LilianPiikki, Kristin[Sensor mapping of Amazonian Dark Earths in deforested croplands]Sensor mapping of Amazonian Dark Earths in deforested croplands

Recent estimates show that one third of the world’s land and water resources are highly or moderately degraded. Global economic losses from land degradation (LD) are as high as USD $10.6 trillion annually. These trends catalyzed a call for avoiding future LD, reducing ongoing LD, and reversing pa...


Nijbroek, Ravic P.Piikki, KristinSöderström, MatsKempen, BasTurner, Katrine GraceHengari, SimeonMutua, John[Soil Organic Carbon Baselines for Land Degradation Neutrality: Map Accuracy and Cost Tradeoffs with Respect to Complexity in Otjozondjupa, Namibia]Soil Organic Carbon Baselines for Land Degradation Neutrality: Map Accuracy and Cost Tradeoffs with Respect to Complexity in Otjozondjupa, Namibia

Four proximal soil sensors were tested at four smallholder farms in Embu County, Kenya: a portable X-ray fluorescence sensor (PXRF), a mobile phone application for soil color determination by photography, a dual-depth electromagnetic induction (EMI) sensor, and a LED-based soil optical reflectanc...


Piikki, KristinSöderström, MatsEriksson, JanMuturi, John JamleckMuthee, Patrick IreriWetterlind, JohannaLund, Eric[Performance evaluation of proximal sensors for soil assessment in smallholder farms in Embu County, Kenya]Performance evaluation of proximal sensors for soil assessment in smallholder farms in Embu County, Kenya

Soil organic carbon (SOC) sequestration is important in the global carbon cycle and an integral part of many initiatives and policies to mitigate climate change. For efficient targeting of measures leading to SOC sequestration, it is necessary to know the actual SOC content (%) and a realistic ta...


Piikki, KristinSöderström, MatsSommer, RolfSilva, Mayesse daMunialo, SussyAbera, Wuletawu[A Boundary Plane Approach to Map Hotspots for Achievable Soil Carbon Sequestration and Soil Fertility Improvement]A Boundary Plane Approach to Map Hotspots for Achievable Soil Carbon Sequestration and Soil Fertility Improvement

The usefulness of a continental digital soil map (AfSoilGrids250) was investigated at two levels relevant for agricultural fertiliser recommendations in Rwanda (point locations and administrative sector unit averages). Analysis of 900 soil samples for pH and soil organic carbon (SOC) revealed tha...


Söderström, MatsPiikki, KristinCordingley, Jeremy[Improved usefulness of continental soil databases for agricultural management through local adaptation]Improved usefulness of continental soil databases for agricultural management through local adaptation

Climate change is projected to have widespread impacts on the climate suitability and geographical distribution of agricultural crops. Simulations were conducted on the suitability of common beans (Phaseolus vulgaris L.) in Tanzania under progressive climate change, taking into account a soil fer...


Piikki, KristinWinowiecki, Leigh A.Vågen, Tor-GunnarRamírez Villegas, JuliánSöderström, Mats[Improvement of spatial modelling of crop suitability using a new digital soil map of Tanzania]Improvement of spatial modelling of crop suitability using a new digital soil map of Tanzania

A synthesis of available agronomic datasets and peer-reviewed scientific literature was conducted to: (1) assess the status of micronutrients in sub-Saharan Africa (SSA) arable soils, (2) improve the understanding of the relations between soil quality/management and crop nutritional quality and (...


Kihara, JobBolo, PeterKinyua, MichaelRurinda, JairosPiikki, Kristin[Micronutrient deficiencies in African soils and the human nutritional nexus: opportunities with staple crops]Micronutrient deficiencies in African soils and the human nutritional nexus: opportunities with staple crops

Grasslands occupy almost half of the world's land area. Soil organic carbon (SOC) is a key indicator of soil fertility and grassland productivity. Increasing SOC stocks (so‐called SOC sequestration) improves soil fertility and contributes to climate change mitigation by binding atmospheric carbon...


Tessema, BezayeSommer, RolfPiikki, KristinSöderström, MatsNamirembe, SaraNotenbaert, An Maria OmerTamene, LulsegedNyawira, SylviaPaul, Birthe K.[Potential for soil organic carbon sequestration in grasslands in East African countries: A review]Potential for soil organic carbon sequestration in grasslands in East African countries: A review

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