A5071874806- Soil and Water Nutrient Dynamics
- Phosphorus and nutrient management
- Composting and Vermicomposting Techniques
- Energy, Environment, Agriculture Analysis
- Soil Carbon and Nitrogen Dynamics
- Environmental Conservation and Management
- Marine and coastal ecosystems
- Heavy metals in environment
- Microbial Community Ecology and Physiology
- Clay minerals and soil interactions
- Iron oxide chemistry and applications
- Plant Growth Enhancement Techniques
- Crop Yield and Soil Fertility
- Botany and Plant Ecology Studies
- Plant Physiology and Cultivation Studies
- Constructed Wetlands for Wastewater Treatment
- Arsenic contamination and mitigation
- Environmental Policies and Emissions
- Agricultural Development and Management
- Chronic Lymphocytic Leukemia Research
- Mercury impact and mitigation studies
- Soil erosion and sediment transport
- Plant-Microbe Interactions and Immunity
- Growth and nutrition in plants
- Mine drainage and remediation techniques
Planta
2019-2020
Instituut voor Landbouw en Visserijonderzoek
2018
University of Bath
2016
KU Leuven
2007-2014
Abstract Background When maize ( Zea mays L.) is grown in the Northern hemisphere, its development heavily arrested by chilling temperatures, especially at juvenile phase. As some endophytes are beneficial for plants under stress conditions, we analyzed impact of temperatures on root microbiome and examined whether microbiome-based analysis might help to identify bacterial strains that could promote growth these temperatures. Results We investigated how composition changed means 16S rRNA...
Summary Most soil tests for available phosphorus (P) perform rather poorly in predicting crop response. This study was set up to compare different established their capacity predict response across contrasting types of soil. Soil samples from long‐term field experiments, the oldest >100 years old, were collected five European countries. The total number ( n = 218), which differed cropping and P treatment, originated 11 types, analysed with tests: ammonium oxalate (Ox), lactate (AL), Olsen...
Copper is mobilized in soil by dissolved organic matter (DOM) but the role of DOM quality this process unclear. A one-step resin-exchange method was developed to measure Cu-Mobilizing-Potential (CuMP) at pCu 11.3 and pH 7.0, representing background values. The CuMP measured solutions 13 uncontaminated soils with different extraction methods. CuMP, expressed per unit carbon (DOC), varied 10-fold followed order water extracts > 0.01 M CaCl2 pore water. Soil solutions, obtained from that were...
Summary It is well established that dissolved organic matter (DOM) mobilizes copper (Cu) in soils but it unknown to what extent variable DOM quality affects this. During a 5 month period, 250 leachates of an uncontaminated agricultural soil were sampled at 45 cm depth using passive capillary wick samplers. The Cu and carbon (DOC) concentrations varied sevenfold weakly correlated ( r = 0.56). [Cu] : [DOC] ratio fivefold exhibited significant positive correlation 0.77) with the specific...
Summary Slow immobilization of trace metals in soil, termed ‘fixation’, affects their natural attenuation but it is still unclear which reactions occur. Twenty‐eight soils were selected to assess the role Fe oxides and carbonates on fixation Cu, Cd, Zn Ni. Soils included samples from 2 toposequences (Vietnam, Spain) 13 European topsoils with different soil characteristics (pH 3.4–7.7). Samples amended 250 mg kg −1 , 100 Cu 80 Ni 2.5 Cd as metal salts incubated for 850 days. Fixation was...
Abstract Irrigated rice is less prone generally to phosphorus (P) deficiency than rainfed because redox reactions release P upon soil flooding. It not known whether that also true in highly weathered soils of Madagascar where the combination high Fe and low input may impede significant P. Soils flag leaf samples were collected 2010 38 irrigated 46 fields belonging private farmers. A critical content was derived from a P‐dosed pot trial study with three soils, results suggested 2.4 g P/kg as...
Dissolved organic matter (DOM) affects a wide range of soil processes, but it is generally unknown which factors control its concentration. Here we report survey solution dissolved carbon (DOC) concentrations in agricultural soils with contrasting properties. Eighty‐seven topsoils were sampled throughout Europe. Soil was isolated by centrifugation (3500 g) from field moist and analyzed directly ( n = 30), air‐dried that rewetted incubated for 5 wk or stored at 4°C during 1.5 yr 39). The...
Biochar has previously been used in growing media blends as fertilizer or for improving plant growth, disease suppression, and a sustainable replacement of peat. To achieve optimal circular horticulture, we propose here to reuse the biochar from spent media. However, it is unclear what extent feedstock determines mode action if use may encounter nutrient salt problems. Differences chemical characteristics, release, interaction leaching experiment effects on uptake, suppression strawberry...
Summary Iron oxyhydroxides are long‐term sinks for toxic trace metals and suggested as factors to explain metal immobilization in soil. It is unknown how crystallinity crystal structure of iron (Fe) affect the kinetics adsorption. Adsorption nickel (Ni), zinc (Zn) cadmium (Cd) on four synthetic Fe (hydrous ferric oxide (HFO), ferrihydrite (FH), goethite (GT), haematite (HT)) were characterized suspensions during 70 days at different initial concentrations various pH values (3.8–7.0)...
Phosphorus (P) adsorbed by iron (Fe) oxyhydroxides in soil can be released when the Fe(III) minerals are reductively dissolved after flooding. However, this release is limited tropical soils with large Fe contents and previous studies have suggested that P sorbs or precipitates newly formed Fe(II) minerals. This hypothesis tested here scavenging 2+ flooded increasing cation exchange capacity (CEC) of through resin application (30 cmol c kg −1 ; Na‐form). Three from rice paddies contrasting...
Abstract Soil flooding increases phosphorus (P) availability due to reductive dissolution of P‐bearing Fe(III) minerals. It is, however, unclear whether such processes also act in P‐deficient soils the tropics that have large Fe/P ratios (dithionite‐ and oxalate‐extractable P Fe). The objective was identify extent release induced by soil characteristics involved. Six topsoils (0.4–5% Fe) from rice fields Madagascar were incubated aerobically anaerobically for 66 days amended with factorial...
Abstract This study was set up to identify the role of phosphorus (P) desorption rate in P diffusion and bioavailability soil. The kinetics were measured with a zero‐sink method soil suspensions (0–77 days) for soils that either had or not been mined glasshouse study. fitted by serial two‐pool model, discriminating fast desorbing pool (Q 1 ) half‐lives 3–8 days, slowly 2 ), which replenishes 100‐fold larger than pool. Phosphate smaller slower after mining compared original samples reduced Q...
Brown shrimp (Crangon crangon) shells and Chinese mitten crab (Eriocheir sinensis) were chemically demineralized deproteinized (denoted as M1 to M4 for the M5 M7 crab), torrefied at 200 300 °C R200, R255, R300), compared with a commercially available chitin source reference chitin). Based on their chemical characteristics, selection of sources was tested N mineralization capacity. The release high treated crab, but not or without acid treatment, indicating that treatment higher resulted in...
Summary Most methods to fractionate natural dissolved organic matter (DOM) rely on sorption of acidified DOM samples onto XAD‐8 or DAX‐8 resin. Procedural differences among are large and their interpretation is limited because there a lack calibration with model molecules. An automated column‐based fractionation method was set up for 10‐ml samples, dividing into hydrophilic (HPI), hydrophobic acid (HPOA) neutral (HPON) fractions. Fifteen components were tested in isolation combination. Three...
As wheat (Triticum aestivum) is an important staple food across the world, preservation of stable yields and increased productivity are major objectives in breeding programs. Drought a global concern because its adverse impact expected to be amplified future due current climate change. Here, we analyzed effects edaphic, environmental, host factors on root microbiomes collected soils from six regions Belgium. Amplicon sequencing analysis unplanted soil endosphere samples indicated that...
Abstract Intense soil cultivation and climate change have detrimental effects on soils. Solutions are needed to improve the biological quality water holding capacity of agricultural A greenhouse experiment was conducted investigate interactive effect compost application drought stress a soil/plant system in order determine improvement plant growth alleviation stress. Lettuce ( Lactuca sativa L.) grown under conditions sandy with sufficient mineral fertilizer test five types (three made from...
Summary The reduced use of phosphorus (P) fertilizer in fertile soil has reverted the P balance to negative some regions. It is unclear how long current stocks will ensure adequate supply crops. In addition, it unknown if tests for available describe bioavailable adequately where becoming depleted. We set up an accelerated mining test address these questions. Perennial ryegrass ( Lolium perenne , Melpetra tetra) was grown 2 years a greenhouse on 5‐cm‐deep layers eight contrasting soils with...