Application of polyacrylamide to reduce phosphorus losses from a Chinese purple soil: A laboratory and field investigation

Jiang, Tao; Teng, Liwei; Wei, Shiqiang; Deng, Lili; Luo, Zaibo; Yu-peng, Chen; Flanagan, D. C.

doi:10.1016/j.jenvman.2010.02.006

Cited by 33 publications

(11 citation statements)

References 32 publications

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“…Use of one tonne of such material daily can treat 300 L livestock wastewater containing 24–100 mg P L −1 (Zhao and Shao 2005 ). Incorporation of polyacrylamide into the soil can significantly reduce P losses via surface runoff and leaching compared with an unamended control (Jiang et al 2010 ). For runoff P losses, application of lime (CaCO 3 ) or gypsum (CaSO 4 ·2H 2 O) can also help decrease total P losses (Jiang et al 2010 ).…”

Section: Management Strategies For Soil Phosphorus and Phosphorus Losmentioning

confidence: 99%

Past, present, and future use of phosphorus in Chinese agriculture and its influence on phosphorus losses

Liu

et al. 2015

AMBIO

171

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Large inputs of phosphorus (P) in chemical fertilizers and feed supplements since 1978 have improved soil P status in arable land in China, but have also created challenges by increasing P concentrations in manure and exacerbating water quality degradation. Arable land in China can be divided into five management zones based on soil P chemistry, with 15–92 % of arable land having lower P status than the agronomic optimum and 0.3–7.2 % having severe risks of P leaching losses. A scenario analysis of soil P budget and agronomic P demand during 2011–2030 highlighted the great pressure China faces in sustainable P management and the need for drastic changes in current practices. This includes new policies to reduce P supplementation of feed and improved P use efficiency by livestock and programs to expand the adoption of appropriate fertilization, soil conservation, and drainage management practices to minimize P losses.

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Section: Management Strategies For Soil Phosphorus and Phosphorus Losmentioning

confidence: 99%

Past, present, and future use of phosphorus in Chinese agriculture and its influence on phosphorus losses

Liu

et al. 2015

AMBIO

171

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“…Moreover, we found that the release potentials of MRP truly and/or MUP truly were promoted by PAM application. This is mainly because PAM can promote the formation of large‐sized soil particles, thereby reducing the number of available adsorption sites for truly dissolved P on the soil surface (Teng et al, ; Jiang et al, ). In addition, PAM with a negative COOH group, negatively charged phosphate, and dissolved organic matter (containing MUP) will compete with each other for adsorption sites on the soil surface, leading to resolving and releasing MRP and MUP from the soil surface.…”

Section: Discussionmentioning

confidence: 99%

Soil Colloidal P Release Potentials under Various Polyacrylamide Addition Levels

Liu

Tian

2017

Land Degrad Dev

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Anionic polyacrylamide (PAM) can prevent soil erosion, but its effect on fine particulate phosphorus (P), such as colloidal P, has not been thoroughly examined. The effects of PAM on the release potentials of water‐dispersible colloids (WDC) and total P, molybdenum‐reactive P (MRP), and molybdenum‐unreactive P (MUP) in the colloidal and truly dissolved phases (i.e., TPcoll, MRPcoll, MUPcoll, TPtruly, MRPtruly, and MUPtruly) from six soils across South China were tested in this study. The results showed that the release potentials of TPcoll in the control treatments were 6·9–46·1 mg kg−1 and generally highest in sandy loam soil. Following low (12·5 kg ha−1), middle (25 kg ha−1), and high (50 kg ha−1) levels of PAM application, the release potential of TPcoll decreased by 41·7, 63·2, and 77·4% compared to the control group, respectively. Additionally, PAM may trigger MRPcoll and TPtruly releases in sandy loam and/or silt soils, and for most soils, MRPtruly and MUPtruly showed the highest release potentials at middle or high PAM levels. A significant PAM application level by soil site interaction for the release potentials of WDC and colloidal P was observed. Multiple linear regression showed that the PAM rate combined with soil sand content can successfully predict the release potentials of WDC (R2 = 0·552, p < 0·001) and TPcoll (R2 = 0·738, p < 0·001). Our results suggest that PAM can effectively reduce the loss of soil colloids and colloidal P, while its effects are related to both application level and soil texture. Copyright © 2017 John Wiley & Sons, Ltd.

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“…Large molecules polymer molecules or ions can be wrapped into the internal network structure and activated by exchange adsorption, charge and chelating fixed way, thus being slowly released to soil (Cai et al, 2014;Yang et al, 2017). Secondly, polyacrylamide active groups can interact with ions on the surface of soil particles to form a water-stable aggregate structure that further increases the holding effect of soil on nutrients and reduces soil N losses (Jiang et al, 2010;Mamedov et al, 2010;Liu et al, 2015). Thirdly, polyacrylamide in soil is a kind of anion resin that can effectively adsorb NH 4 + -N and other cationic ions.…”

Section: Effects Of Soil Amendments On Soil N Losses and Yieldmentioning

confidence: 99%

“…Adsorption and slow-release effect of polyacrylamide on soil inorganic N are important reasons for reducing soil N losses. Positive impact of polyacrylamide on soil structure stability and its effect on reducing soil N losses are also responsible for a high crop yield (Jiang et al, 2010;Yang et al, 2017). It should be noted that depending on application method and application amount, a large amount of dissolved polyacrylamide can also clog the soil and lead to soil compaction, resulting in a negative impact.…”

Section: Effects Of Soil Amendments On Soil N Losses and Yieldmentioning

confidence: 99%

Effects of three types of soil amendments on yield and soil nitrogen balance of maize-wheat rotation system in the Hetao Irrigation Area, China

Zheng

et al. 2019

J. Arid Land

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Excessive fertilization combined with unreasonable irrigation in farmland of the Hetao Irrigation Area (HIR), China, has resulted in a large amount of nitrogen (N) losses and agricultural non-point source pollution. Application of soil amendments has become one of the important strategies for reducing N losses of farmland. However, there is still no systematic study on the effects of various soil amendments on N losses in the HIR. In this study, three types of soil amendments (biochar, bentonite and polyacrylamide) were applied in a maize-wheat rotation system in the HIR during 2015-2017. Yields of maize and wheat, soil NH 3 volatilization, N 2 O emission and NO 3leaching were determined and soil N balance was estimated. The results showed that applications of biochar, bentonite and polyacrylamide significantly increased yields of maize by 9.2%, 14.3% and 13.3%, respectively, and wheat by 9.2%, 16.6% and 12.3%, respectively, compared with the control (fertilization alone). Applications of biochar, bentonite and polyacrylamide significantly reduced soil N leaching by 23.1%, 35.5% and 27.1%, soil NH 3-N volatilization by 34.8%, 52.7% and 37.8%, and soil N surplus by 23.9%, 37.4% and 30.6%, respectively. Applications of bentonite and polyacrylamide significantly reduced N 2 ON emissions from soil by 37.3% and 35.8%, respectively, compared with the control. Compared with application of biochar, applications of bentonite and polyacrylamide increased yields of maize and wheat by 5.1% and 3.5%, respectively. Our results suggest that soil amendments (bentonite and polyacrylamide) can play important roles in reducing N losses and increasing yield for the maize-wheat rotation system in the HIR, China.

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Application of polyacrylamide to reduce phosphorus losses from a Chinese purple soil: A laboratory and field investigation

Cited by 33 publications

References 32 publications

Past, present, and future use of phosphorus in Chinese agriculture and its influence on phosphorus losses

Past, present, and future use of phosphorus in Chinese agriculture and its influence on phosphorus losses

Soil Colloidal P Release Potentials under Various Polyacrylamide Addition Levels

Effects of three types of soil amendments on yield and soil nitrogen balance of maize-wheat rotation system in the Hetao Irrigation Area, China

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