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View article: Rapid soil degradation following deforestation in Eastern Africa
Rapid soil degradation following deforestation in Eastern Africa Open
Deforestation for cropland expansion in tropical sloping landscapes causes severe soil erosion and thus the loss of fertile, organic rich topsoil. The effects of land degradation on tropical soils developed from different parent materials,…
View article: Biochar in the circular bionutrient economy
Biochar in the circular bionutrient economy Open
The circular bionutrient economy is defined here as the circular economy of nutrients in managed organic residues. Here, we posit that biochar technology can stimulate the circular bionutrient economy by meeting the following three require…
View article: Locating the microbes along the maize root system under nitrogen limitation: a root phenotypic approach
Locating the microbes along the maize root system under nitrogen limitation: a root phenotypic approach Open
Background A major challenge in agriculture is the low nitrogen (N) uptake efficiency of crops, which poses environmental and economic costs. Root adaptive architectural and anatomical phenotypes in synergy with root microbes could be a pr…
View article: Phosphorus and aluminium mobilisation in ferralsols: effects of local sediment amendments, liming and straw application in a lab study
Phosphorus and aluminium mobilisation in ferralsols: effects of local sediment amendments, liming and straw application in a lab study Open
Phosphorus (P) activation is a major challenge for agriculture on tropical soils like Ferralsols in East Africa, mainly due to soil acidity and high mobility of aluminium (Al). Strategies such as local sediment amendments and liming have s…
View article: Aquatic and soil CO <sub>2</sub> emissions from forested wetlands of Congo's Cuvette Centrale
Aquatic and soil CO <sub>2</sub> emissions from forested wetlands of Congo's Cuvette Centrale Open
Within tropical forest ecosystems, wetlands such as swamp forests are an important interface between the terrestrial and aquatic landscape. Despite this assumed importance, there is a paucity of carbon flux data from wetlands in tropical A…
View article: Depth effects of long-term organic residue application on soil organic carbon stocks in central Kenya
Depth effects of long-term organic residue application on soil organic carbon stocks in central Kenya Open
In arable soils, a substantial portion of soil organic carbon (SOC) is stored below the plough layer. To develop sustainable soil management strategies, it is important to assess how they affect the quantity of SOC stored in the subsoil. T…
View article: Limited effect of organic matter addition on stabilised organic carbon in four tropical arable soils
Limited effect of organic matter addition on stabilised organic carbon in four tropical arable soils Open
Arable soils are generally characterised by a low soil organic carbon (SOC) content, with negative consequences for soil health, crop yield and global climate. Thus, over the past decades, there has been a focus on how agricultural managem…
View article: Soil Carbon Saturation: What Do We Really Know?
Soil Carbon Saturation: What Do We Really Know? Open
Managing soils to increase organic carbon storage presents a potential opportunity to mitigate and adapt to global change challenges, while providing numerous co‐benefits and ecosystem services. However, soils differ widely in their potent…
View article: Ammonia emissions after trailing hose application of digestates and cattle slurry
Ammonia emissions after trailing hose application of digestates and cattle slurry Open
Anaerobic digestion (AD) is a promising technique for waste management, producing energy and contributing to nutrient recycling in agroecosystems. While digestates have higher plant-available nutrient contents, they may be prone to increas…
View article: From smallholder to commercial farming: the impact of termite mound levelling and spatial heterogeneity in mound morphology on soil organic carbon in Miombo woodlands, Central Africa
From smallholder to commercial farming: the impact of termite mound levelling and spatial heterogeneity in mound morphology on soil organic carbon in Miombo woodlands, Central Africa Open
Context The recent expansion of commercial agriculture in the Miombo woodlands of central Africa has led to widespread levelling of termite mounds. These mounds contain significantly lower soil organic carbon (SOC) than surrounding soils, …
View article: A microbially driven and depth-explicit soil organic carbon model constrained by carbon isotopes to reduce parameter equifinality
A microbially driven and depth-explicit soil organic carbon model constrained by carbon isotopes to reduce parameter equifinality Open
Over the past years, microbially driven models have been developed to improve simulations of soil organic carbon (SOC) and have been put forward as an improvement to assess the fate of SOC stocks under environmental change. While these mod…
View article: Enhancing Barley Yield and Biomass in Kenya: The Effects of Local Sediments, Lime Amendments and Straw Return
Enhancing Barley Yield and Biomass in Kenya: The Effects of Local Sediments, Lime Amendments and Straw Return Open
Soil acidification and low nutrient availability are critical challenges for agriculture in East Africa, often leading to aluminium (Al) toxicity and reduced crop yields. Amending arable land with local sediments has been shown to be a pro…
View article: Improving nitrous oxide (N₂O) emissions accounting in Kenya: Insights and measurement results relating to fertilizer practices, environmental drivers, and N isotopic composition
Improving nitrous oxide (N₂O) emissions accounting in Kenya: Insights and measurement results relating to fertilizer practices, environmental drivers, and N isotopic composition Open
The use of mineral fertilizers in Sub-Saharan Africa (SSA) is crucial for enhancing agricultural productivity but also raises concerns about emissions of nitrous oxide (N₂O), a potent greenhouse gas. Despite their importance for agricultur…
View article: Impacts of climate change on land suitability for cereal crops in Ethiopia&#160;
Impacts of climate change on land suitability for cereal crops in Ethiopia  Open
Climate is a key factor influencing cropland suitability, hence, climate change poses a significant threat to future cropland quality and availability across the globe. The magnitude and direction of these impacts, however, vary across reg…
View article: Effects of N fertilization on soil chemistry dynamics in Ferralsols of the High Potential Maize Zone, Kenya
Effects of N fertilization on soil chemistry dynamics in Ferralsols of the High Potential Maize Zone, Kenya Open
Nitrogen-based inorganic fertilizers have been crucial in crop production globally. For a long time, SSA agriculture has been characterised by low fertilizer use and negative nutrient balances. However, recently fertilizer use has increase…
View article: Substantial methane emissions from central Congo&#8217;s wetlands&#160;
Substantial methane emissions from central Congo’s wetlands  Open
The Congo Basin is home to the world’s largest tropical peatland complex storing 29 PgC across 16.7 million ha, which poses a major unconstrained source of global wetland CH4. Key controls over their spatio-temporal variability remai…
View article: Drought intensity alters nitrogen cycling at the tree and soil interface in Scots pine mesocosms&#160;
Drought intensity alters nitrogen cycling at the tree and soil interface in Scots pine mesocosms  Open
More frequent and intense episodes of drought are expected to affect terrestrial nitrogen (N) cycling by altering N transformation rates, the functioning of soil microorganisms, and plant N uptake. However, there is limited empirical evide…
View article: Green water availability and water-limited crop yields under a changing climate in Ethiopia
Green water availability and water-limited crop yields under a changing climate in Ethiopia Open
Climate change is expected to influence future agricultural water availability, posing particular challenges in rainfed agricultural systems. This study aims to analyze the climatology of green water availability and water-limited attainab…
View article: A novel approach to use the DayCent model for simulating agroforestry systems with multiple components
A novel approach to use the DayCent model for simulating agroforestry systems with multiple components Open
Agroforestry can offer carbon sequestration, higher system productivity and biodiversity. However, a limited number of field experiments exist to study their feasibility and trade-offs for large scale deployment. Agroecosystem models could…
View article: From “power over” to “power with”: resilience of the tomato value chain in the Upper East Region of Ghana
From “power over” to “power with”: resilience of the tomato value chain in the Upper East Region of Ghana Open
Food systems are increasingly subject to shocks (e.g., climate change, pandemics, financial or political crises), threatening food supply both locally and globally. Transforming food systems is urgent to achieve socially just food for all …
View article: Aquatic and Soil CO <sub>2</sub> Emissions from forested wetlands of Congo's Cuvette Centrale
Aquatic and Soil CO <sub>2</sub> Emissions from forested wetlands of Congo's Cuvette Centrale Open
Within tropical forest ecosystems, wetlands such as swamp forests are an important interface between the terrestrial and aquatic landscape. Despite this assumed importance, there is a paucity of carbon flux data from wetlands in tropical A…