A5058327437- Soil Carbon and Nitrogen Dynamics
- Agronomic Practices and Intercropping Systems
- Soil erosion and sediment transport
- Legume Nitrogen Fixing Symbiosis
- Soil and Water Nutrient Dynamics
- Conservation, Biodiversity, and Resource Management
- Agroforestry and silvopastoral systems
- Soil Geostatistics and Mapping
- Plant nutrient uptake and metabolism
- Agriculture and Rural Development Research
- Hydrology and Watershed Management Studies
- Rangeland Management and Livestock Ecology
- Rice Cultivation and Yield Improvement
- Microbial Community Ecology and Physiology
- Land Use and Ecosystem Services
- Plant Parasitism and Resistance
- Hydrology and Sediment Transport Processes
- Oil Palm Production and Sustainability
- Peatlands and Wetlands Ecology
- Soil and Unsaturated Flow
- Geochemistry and Geologic Mapping
- Agricultural pest management studies
- Forest ecology and management
- Atmospheric and Environmental Gas Dynamics
- Soil Management and Crop Yield
University of Hohenheim
2016-2025
Instituto de Ciencias Agrarias
2018-2019
Leibniz Institute for Agricultural Engineering and Bioeconomy
2017
Agroécologie
2016
Wye College
1999-2013
University of London
1997-2013
Imperial College London
2003-2007
World Agroforestry Centre
2006
United Nations Industrial Development Organization
2003
University College London
2003
Abstract The estimation of the size and changes soil organic carbon (SOC) stocks is great importance for decision makers to adopt proper measures protect soils develop strategies mitigation greenhouse gases. In this paper, data from Second State Soil Survey China (SSSSC) conducted in early 1980s published last 5 years were used estimate SOC over whole profile their 20 years. Soils identified as paddy, upland, forest, grassland or waste‐land an improved bulk density method was missing data....
This study assessed specific peaks obtained by diffuse reflectance Fourier transform mid‐infrared spectroscopy (DRIFTS) for characterizing the soil organic matter (SOM) composition of a Haplic Chernozem. Soils were collected from Static Fertilization Experiment, Bad Lauchstädt, Germany, during 5 years farmyard manure (FYM), mineral fertilizer (NPK), combination (FYM + NPK) and no (Control) treatments. extracted with hot water (HWE), fractionated size density. Bulk fractions analysed DRIFTS....
Carbon isotopic fractionations in plant materials and those occurring during decomposition have direct implications studies of short-and longer-term soil organic matter dynamics. Thus the products decomposition, evolved CO(2) newly formed matter, may vary their (13)C signature from that original material. To evaluate importance such fractionation processes, variations signatures between within parts a tropical grass (Brachiaria humidicola) legume (Desmodium ovalifolium) were measured changes...
Total X-ray fluorescence spectroscopy (TXRF) determines concentrations of major and trace elements in multiple media. We developed tested a method for the use TXRF direct quantification total element soils using an S2 PICOFOX™ spectrometer (Bruker AXS Microanalysis GmbH, Germany). selected 15 contrasting soil samples from across sub-Saharan Africa analysis to calibrate instrument against determined inductively coupled plasma-mass (ICP-MS) standard method. A consistent underestimation...
In 2007 two long-term trials were established in Kenya to contribute research-based evidence the global debate on productivity, economic viability and sustainability of different agricultural production systems. These compare conventional (Conv) organic (Org) farming systems at high low input levels locations, i.e. Chuka, with Humic Nitisols, inherent soil fertility rainfall, Thika, Rhodic Nitisols rainfall. The (High) represent commercial-scale, export-oriented that uses recommended amounts...
Abstract Maize production in Thailand is increasingly suffering from drought periods along the cropping season. This creates need for rapid and accurate methods to detect crop water stress prevent yield loss. The study was, therefore, conducted improve efficacy of thermal imaging assessing maize prediction. experiment was carried out under controlled field conditions Phitsanulok, Thailand. Five treatments were applied, including (T1) fully irrigated treatment with 100% requirement (CWR) as...
The rotation of crops with fast‐growing tree, shrub, and herbaceous N 2 ‐fixing legume species (improved fallows) is a central agroforestry technology for soil fertility management in the humid tropics. Maize yields are increased following improved fallows compared continuous maize cropping or traditional natural‐fallow systems consisting broadleaved weeds grasses. However, effect these improved‐fallow on availability O emissions residue application has yet to be determined. Emissions from...
There is widespread concern at continuing and deepening poverty food insecurity in sub‐Saharan Africa the lack of broad‐based economic growth. also debate about agriculture's role driving pro‐poor growth, some arguing it has a critical while others see as largely irrelevant. We suggest that both sets arguments pay insufficient attention to important institutional issues, agriculture play, by default, there are few other candidates with same potential for supporting are, however, immense...
In a tsunami event human casualties and infrastructure damage are determined predominantly by seaquake intensity offshore properties. On land, wave energy is attenuated gravitation (elevation) friction (land cover). Tree belts have been promoted as “bioshields” against impact. However, given the lack of quantitative evidence their performance in such extreme events, tree criticized for creating false sense security. This study used 180 transects perpendicular to over 100 km on west coast...