Phosphorus Mobilization from Manure-Amended and Unamended Alkaline Soils to Overlying Water during Simulated Flooding

Amarawansha, E. A. G. S.; Kumaragamage, Darshani; Flaten, Don; Zvomuya, Francis; Tenuta, Mario

doi:10.2134/jeq2014.10.0457

Cited by 72 publications

(118 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…DRP decreased 88.3% in VS and 85.0% in WS. The result was consistent with those of Amarawansha et.al [18] but different from those of Tian [36]. Tian et al found that DRP in floodwater decreased with time of flooding in amended acid soils.…”

Section: Standing Floodwater P Following Long-term Flooding Drainingsupporting

confidence: 88%

“…Furthermore, Olsen P in VS was 106.9-274.2 mg/kg at 0-35 cm. The content of Olsen P in surface soil was 79.87-210.32 mg/kg, which was higher than that in the research of Amarawansha et al [18]. This will lead to increased soil P leaching into flood water and pore water and increased the risk of eutrophication of rivers and lakes from agricultural non-point source pollution.…”

Section: General Soil Propertiescontrasting

confidence: 54%

“…Tian et al found that in fertilized acid soils, the P content of floodwater was higher than in unamended soils [15]. Amarawansha et al also found that the P content of floodwater and pore water in manured alkaline soil was significantly higher than in unamended alkaline soil [18]. The effects of long-term flooding, draining, and reflooding on pH, Eh, and DRP in floodwater are shown in Figures 1 and 2.…”

Section: General Soil Propertiesmentioning

confidence: 97%

“…Floodwater pH increased during the flooding and reflooding periods due to long-term exposure to the atmosphere [18]. After draining, the floodwater pH, which was initially higher than 8, decreased slightly during the reflooding period.…”

Section: General Soil Propertiesmentioning

confidence: 99%

“…Many studies have examined soil P adsorption and release, especially under flooded conditions [9][10][11][12][13][14][15][16][17][18]. Flooding and draining causes chemical changes in soils, which leads to the dynamic…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Phosphorus Dynamics in Long-Term Flooded, Drained, and Reflooded Soils

Tian

Dong

Karthikeyan

et al. 2017

Water

View full text Add to dashboard Cite

Abstract:In flooded areas, soils are often exposed to standing water and subsequent drainage, thus over fertilization can release excess phosphorus (P) into surface water and groundwater. To investigate P release and transformation processes in flooded alkaline soils, wheat-growing soil and vegetable-growing soil were selected. We flooded-drained-reflooded two soils for 35 d, then drained the soils, and 10 d later reflooded the soils for 17 d. Dissolved reactive phosphorus (DRP), soil inorganic P fractions, Olsen P, pH, and Eh in floodwater and pore water were analyzed. The wheat-growing soil had significantly higher floodwater DRP concentrations than vegetable-growing soil, and floodwater DRP in both soils decreased with the number of flooding days. During the reflooding period, DRP in overlying floodwater from both soils was less than 0.87 mg/L, which was 3-25 times less than that during the flooding period. Regardless of flooding or reflooding, pore water DRP decreased with flooding days. The highest concentration of pore water DRP observed at a 5-cm depth. Under the effect of fertilizing and flooding, the risk of vertical P movement in 10-50 cm was enhanced. P diffusion occurred from the top to the bottom of the soils. After flooding, Al-P increased in both soils, and Fe-P, O-P, Ca 2 -P decreased, while Fe-P, Al-P, and O-P increased after reflooding, When Olsen P in the vegetable-growing soil exceeded 180.7 mg/kg and Olsen P in the wheat-growing soil exceeded 40.8 mg/kg, the concentration of DRP in pore water increased significantly. Our results showed that changes in floodwater and pore water DRP concentrations, soil inorganic P fractions, and Olsen P are significantly affected by fertilizing and flooding; therefore, careful fertilizer management should be employed on flooded soils to avoid excess P loss.

show abstract

Section: Standing Floodwater P Following Long-term Flooding Drainingsupporting

confidence: 88%

Section: General Soil Propertiescontrasting

confidence: 54%

Section: General Soil Propertiesmentioning

confidence: 97%

Section: General Soil Propertiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Phosphorus Dynamics in Long-Term Flooded, Drained, and Reflooded Soils

Tian

Dong

Karthikeyan

et al. 2017

Water

View full text Add to dashboard Cite

show abstract

Phosphorus export dynamics and hydrobiogeochemical controls across gradients of scale, topography and human impact

Ali

Wilson

Elliott

et al. 2017

Hydrological Processes

View full text Add to dashboard Cite

Concentration-discharge (c-Q) plots are routinely used as an integrated signal of watershed response to infer solute sources and travel pathways. However, the interpretation of c-Q data can be difficult unless these data are fitted using statistical models. Such models are frequently applied for geogenic solutes, but it is unclear to what extent they might aid in the investigation of nutrient export patterns, particularly for total dissolved phosphorus (TDP) which is a critical driver of downstream eutrophication problems. The goal of the present study was therefore to statistically model c-Q relations (where c is TDP concentrations) in a set of contrasting watersheds in the Northern Great Plains-ranging in size from 0.2 to 1000+ km 2 -to assess the controls of landscape properties on TDP transport dynamics. Six statistical models were fitted to c-Q data, notably (a) one linear model, (b) one model assuming that c-Q relations are driven by the mixing of end-member waters from different landscape locations (i.e., hydrograph separation), (c) one model relying on a biogeochemical stationarity hypothesis (i.e., power law), (d) one model hypothesizing that c-Q relations change as a function of the solute subsurfacecontact time (i.e., hyperbolic model), and (e) two models assuming that solute fluxes are mostly dependent on reaction rates (i.e., chemical models). Model performance ranged from mediocre (R 2 < 0.2) to very good (R 2 > 0.9), but the hydrograph separation model seemed most universal.No watershed was found to exhibit chemostatic behaviour, but many showed signs of dilution or enrichment behaviour. A tendency toward a multi-model fit and better model performance was observed for watersheds with moderate slope and higher effective drainage area. The relatively poor model performance obtained outside these conditions illustrates the likely importance of controls on TDP concentrations in the region that are independent of flow dynamics.

show abstract

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

et al. 2020

View full text Add to dashboard Cite

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 soils is limited to summer conditions and/or room temperatures. Spring snowmelt runoff, which occurs under cold temperatures with frequent freeze-thaw events, is the dominant mode of P loss from agricultural lands to water bodies in the Canadian Prairies. This research examined the effects of temperature on P dynamics under flooded conditions in a laboratory study using five agricultural soils from Manitoba, Canada. The treatments were (a) freezing for 1 wk at −20 • C, thawing and flooding at 4 ± 1 • C (frozen, cold); (b) flooding unfrozen soil at 4 ± 1 • C (unfrozen, cold); and (c) flooding unfrozen soil at 20 ± 2 • C (warm). Pore water and surface water were collected weekly over 8 wk and analyzed for dissolved reactive phosphorus (DRP), pH, calcium, magnesium, iron (Fe), and manganese (Mn). Soils under warm flooding showed enhanced P release with significantly higher DRP concentrations in pore and surface floodwater compared with cold flooding of frozen and unfrozen soils.The development of anaerobic conditions was slow under cold flooding with only a slight decrease in Eh, whereas under warm flooding Eh declined sharply, favoring reductive dissolution reactions releasing P, Fe, and Mn. Pore water and floodwater DRP concentrations were similar between frozen and unfrozen soil under cold flooding, suggesting that one freeze-thaw event prior to flooding had minimal effect on P release under simulated snowmelt conditions. Abbreviations: DAF, days after flooding; DRP, dissolved reactive phosphorus.

show abstract

Phosphorus Mobilization from Manure-Amended and Unamended Alkaline Soils to Overlying Water during Simulated Flooding

Cited by 72 publications

References 47 publications

Phosphorus Dynamics in Long-Term Flooded, Drained, and Reflooded Soils

Phosphorus Dynamics in Long-Term Flooded, Drained, and Reflooded Soils

Phosphorus export dynamics and hydrobiogeochemical controls across gradients of scale, topography and human impact

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

Contact Info

Product

Resources

About