Phosphorus release and speciation in manganese (IV) oxide and zeolite-amended flooded soils

CP Attanayake, D Kumaragamage… - Environmental …, 2022 - ACS Publications
Phosphorus (P) losses from flooded soils and subsequent transport to waterways contribute
to eutrophication of surface waters. This study evaluated the effectiveness of MnO2 and a …

[HTML][HTML] Phosphorus mobilization in unamended and magnesium sulfate-amended soil monoliths under simulated snowmelt flooding

UWA Vitharana, D Kumaragamage, B Balasooriya… - Environmental …, 2021 - Elsevier
Enhanced release of phosphorus (P) from soils with snowmelt flooding poses a threat of
eutrophication to waterbodies in cold climatic regions. Reductions in P losses with various …

[HTML][HTML] Evaluating fall application of soil amendments to mitigate phosphorus losses during spring snowmelt

A Lasisi, D Kumaragamage, N Casson, I Amarakoon… - Catena, 2023 - Elsevier
The potential of soil amendments in reducing phosphorus (P) loss has been reported under
simulated snowmelt, but not evaluated in the field, under snowmelt conditions. We examined …

Exploring Phosphorus Dynamics in Submerged Soils and Its Implications on the Inconsistent Rice Yield Response to Added Inorganic Phosphorus Fertilisers in Paddy …

J Palihakkara, L Burkitt, P Jeyakumar… - Journal of Soil Science …, 2024 - Springer
Rice is the primary energy source of more than half of the global population. Challenges
persist in managing phosphorus (P) in paddy soils of tropical rice-growing countries. In Sri …

Temperature and freezing effects on phosphorus release from soils to overlying floodwater under flooded‐anaerobic conditions

D Kumaragamage, A Concepcion, C Gregory, D Goltz… - 2020 - Wiley Online Library
Increased phosphorus (P) availability under flooded, anaerobic conditions may accelerate P
loss from soils to water bodies. Existing knowledge on P release to floodwater from flooded …

Mobility of arsenic and vanadium in waterlogged calcareous soils due to addition of zeolite and manganese oxide amendments

SP Indraratne, CP Attanayake, D Kumaragamage… - 2023 - Wiley Online Library
Addition of manganese (IV) oxides (MnO2) and zeolite can affect the mobility of As and V in
soils due to geochemical changes that have not been studied well in calcareous, flooded …

Phosphorus release from unamended and gypsum‐or biochar‐amended soils under simulated snowmelt and summer flooding conditions

RS Dharmakeerthi, D Kumaragamage… - Journal of …, 2019 - Wiley Online Library
Prolonged flooding changes the oxidation–reduction status of soils, often enhancing P
release to overlying floodwater. We studied P release from unamended, gypsum‐amended …

Alum and gypsum amendments decrease phosphorus losses from soil monoliths to overlying floodwater under simulated snowmelt flooding

D Kumaragamage, CS Weerasekara, M Perry… - Water, 2022 - mdpi.com
Phosphorus (P) loss from soils poses a threat of eutrophication to downstream waterbodies.
Alum (Al2 (SO4) 3· 18H2O) and gypsum (CaSO4· 2H2O) are effective in reducing P loss …

Flooding‐induced inorganic phosphorus transformations in two soils, with and without gypsum amendment

CP Attanayake, RS Dharmakeerthi, D Kumaragamage… - 2022 - Wiley Online Library
Anaerobic conditions developed during flooding can increase phosphorus (P) losses from
soils to waterways. Soil amendment with gypsum (CaSO4· 2H2O) can effectively reduce …

Phosphorus mobilization from intact soil monoliths flooded under simulated summer versus spring snowmelt with intermittent freeze–thaw conditions

C Weerasekara, D Kumaragamage, W Akinremi… - 2021 - Wiley Online Library
Enhanced phosphorus (P) release from flooded, anaerobic soils has been extensively
studied under summer temperatures but not under cold temperatures with intermittent freeze …