A5089657681- Soil and Water Nutrient Dynamics
- Phosphorus and nutrient management
- Arsenic contamination and mitigation
- Heavy metals in environment
- Aquatic Ecosystems and Phytoplankton Dynamics
- Plant nutrient uptake and metabolism
- Rice Cultivation and Yield Improvement
- Peatlands and Wetlands Ecology
- Plant Micronutrient Interactions and Effects
- Groundwater and Isotope Geochemistry
- Hydrology and Watershed Management Studies
- Mine drainage and remediation techniques
- Iron oxide chemistry and applications
- Clay minerals and soil interactions
- Radioactive element chemistry and processing
- Coal and Its By-products
- Soil erosion and sediment transport
- Cultural Industries and Urban Development
- Groundwater flow and contamination studies
- Radioactivity and Radon Measurements
- Heavy Metal Exposure and Toxicity
- Geochemistry and Elemental Analysis
- Crop Yield and Soil Fertility
- Irrigation Practices and Water Management
- Soil Carbon and Nitrogen Dynamics
KU Leuven
2015-2023
Rothamsted Research
2021-2023
Service Public de Wallonie
2022
Antea Group (Belgium)
2013
In this paper, we outline several recent insights for the priorities and challenges future research reducing phosphorus (P) based water eutrophication in agricultural landscapes of Northwest Europe. We highlight that new efforts best be focused on headwater catchments as they are a key influence initial chemistry larger river catchments, here many management interventions most effectively made. emphasize lack understanding how climate change will impact P losses from landscapes....
The phosphate quality standards in the lowland rivers of Flanders (northern Belgium) are exceeded over 80% sampling sites. factors affecting molybdate reactive P (MRP) these waters were analyzed using data past decade (>200 000 observations). average MRP concentration summer exceeds that winter by factor 3. This seasonal trend is opposite to dissolved oxygen (DO) and nitrate concentrations. negative correlations between DO marked (r = -0.89). concentrations geographically unrelated erosion...
Summary The arsenate ( AsO 4 ) and phosphate PO mobility in aerobic soil is affected by organic matter OM ). This study was set up to quantify the interaction between with an observational, experimental computational approach. adsorption of measured radiotracer 73 samples taken from different horizons two profiles. In four samples, concentration increased experimentally. data were analysed CD‐MUSIC model using ferrihydrite, as competitor isotopically exchangeable phosphorus total bound on...
Abstract Upland rice production on acid, weathered soils is often constrained by phosphorus (P) deficiency and aluminium toxicity. Farmyard manure application (FYM) can sharply enhance yields agronomic P fertilizer (TSP) efficiency under such abiotic stresses. We tested the hypothesis that genotypes differ in tolerance extent of using organic P, offering distinct benefits TSP‐FYM combinations. Multiple field trials were conducted uplands Madagascar, with factorial combinations six genotypes,...
Abstract It is unclear to what extent sorption of antimony (Sb) in soils occurs over long time scales. This study was set up monitor slow reactions (7 days 6 months) Sb Sb(V)‐spiked soil samples during aerobic incubation. The solid–liquid distribution coefficients ( K D ) increased by factors 3 between 7 and 190 after spiking, depending on the soil. increase value, hereafter named ageing factor, with increasing amorphous iron aluminium hydroxide concentration decreasing pH samples. Finally,...
Abstract Mineral phosphate (P) fertilisers are the main suspected sources of uranium (U) and cadmium (Cd) input to agricultural soils. This study was set up survey general long‐term impact P on concentrations Cd, U other trace metals in European A total 218 soil samples collected from 15 (3–78 years, median 18 years) trials at 11 locations with a pairwise comparison topsoil composition between fertilised corresponding unfertilised Aqua regia extraction detected effects fertilisation more...
Riparian buffers are expedient interventions for water quality functions in agricultural landscapes. However, the choice of vegetation and management affects soil microbial communities, which turn affect nutrient cycling production emission gases such as nitric oxide (NO), nitrous (N
<p>The reductive dissolution of iron (Fe) (oxy)hydroxides in sediments releases phosphorus (P) to the overlying water and may lead eutrophication. Glauconite sands (GS) are rich Fe be used as readily available P sorbents. This study was set up test effects dose type GS on immobilisation under hypoxic conditions. Three different were amended a P-rich river sediment at doses 0% (control), 5% 10% (weight fractions) incubated with batch laboratory Glutamate added solution after 15...
Abstract Iron (Fe) minerals are commonly used to remove phosphorus (P) from waste streams, producing P-loaded Fe(III) oxides or Fe(II)P (e.g. vivianite). These may be as fertilizers enhance P circularity if solubilized in soil. Here, we tested the fertilizer value of recycled iron phosphates (FePs) a pot trial and an incubation experiment, hypothesizing that release FePs is possible under reducing conditions. First, was set up with rice (Oryza sativa) all combinations soil flooding not,...
Abstract Upland rice production on weathered soils is often constrained by phosphorus (P) deficiency and soil acidity. Farmyard manure application (FYM) can sharply enhance yields agronomic P fertilizer (TSP) efficiency. We tested the hypothesis that genotypes differ in extent of using organic offering distinct benefits under TSP-FYM combinations. Multiple field trials were conducted uplands Madagascar, with factorial combinations six genotypes, FYM, TSP applications, blanket N&K...
Abstract Riparian buffers are expedient interventions for water quality functions in agricultural landscapes. However, the choice of their vegetation and management affects soil microbial communities, which turn affect nutrient cycling production emission gases such as nitric oxide (NO), nitrous (N 2 O), nitrogen gas ), carbon dioxide (CO ). To investigate potential fluxes above-mentioned gases, samples were collected from a cropland downslope grass, willow, woodland riparian replicated plot...