effects of polyacrylamide and gypsum on soil erosion bangladesh

effects of polyacrylamide and gypsum on soil erosion and

Effects of Polyacrylamide and Gypsum on Soil Erosion and

Effects of Polyacrylamide and Gypsum on Soil Erosion and Sediment Transport Mahardhika, H.1 – Ghadiri, H. – Yu, B. 1Griffith School of Engineering, Griffith University, Nathan, Queensland 4111, Australia.

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effects of polyacrylamide and gypsum on soil erosion and

Effects of polyacrylamide and gypsum on soil erosion and

Total sediment loss for spoil was reduced by 48%, 60%, and 72%, respectively for gypsum, PAM, and PAM+gypsum treatments, compared to the control. Results indicate that the use of gypsum, PAM, and the combination of both significantly reduce erosion from the tested soil and spoil but the combination of the two gives the best results for both.

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effect of gypsum and polyacrylamide application on

Effect of Gypsum and Polyacrylamide Application on

Fig.2 Effects of Polyacrylamide and Gypsum application on sediment concentration of Kunigami mahji soil. Rainfall intensity was 40 mm/hr. Vertical bars show range of measured data Fig.3 Effects of Polyacrylamide and Gypsum application on soil loss from Kunigami mahji soil. Slope was 5%, and rainfall intensity was 40 mm/hr

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effect of polyacrylamide application on runoff, erosion, and

Effect of Polyacrylamide Application on Runoff, Erosion, and

Soil erosion affects soil productivity and environmental quality. A laboratory research experiment under simulated heavy rainfall with tap water was conducted to investigate the effects of anionic polyacrylamide (PAM) application rates (0, 0.5, 1.0, and 2.0 g m −2) and molecular weights (12 and 18 Mg mol −1) on runoff, soil erosion, and soil nutrient loss at a slope of 5°.

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the effectiveness of two soil amendments: gypsum and

The Effectiveness of Two Soil Amendments: Gypsum and

Polyacrylamide (PAM) and gypsum to soils has lasting . effect on reducing soil erosion under saline condition. The . impact of these amendments on soil erosi. on, water quality, infiltration, and runoff rate was studied under GUTSR (Griffith University Tilting-flume Simulation Rainfall) facilities.

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effect of polyacrylamide and gypsum on surface runoff

Effect of polyacrylamide and gypsum on surface runoff

The objective of this study was to evaluate the effects of PAM and gypsum (CaSO 4, 2H 2 O) amendments on runoff, sediment yield and loss of major soil nutrients i.e. nitrogen, phosphorus and potassium (N, P, and K) from the steeply sloped land surface under natural rainfall conditions.

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effect of gypsum and polyacrylamide application on

Effect of Gypsum and Polyacrylamide Application on

Applying lime or gypsum as soil conditioners in concert with polyacrylamide (PAM) can reduce soil erosion more than applying the conditioner or the PAM alone, but little is known about the

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polyacrylamide soil amendment effects on runoff and sediment

POLYACRYLAMIDE SOIL AMENDMENT EFFECTS ON RUNOFF AND SEDIMENT

Soil erosion, Erosion control, Soil amendments, Polymers, Polyacrylamide, PAM. any of the agricultural production lands within the U.S. are on relatively low slopes (0% to 25%) that in certain circumstances can have significant soil erosion problems. However, steeper slopes (>25%), which are typical of agricultural

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effect of polyacrylamide and gypsum on surface runoff

Effect of polyacrylamide and gypsum on surface runoff

Hilly terrains with steep slopes and poor vegetative cover are prone to soil erosion. Crop productivity from such lands can be increased by adding correct amounts of soil conditioners such as polyacrylamide (PAM) and gypsum (G) to reduce soil erosion and to improve settling of suspended sediment.

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polyacrylamide for turbidity control in runoff: effects of

Polyacrylamide For Turbidity Control in Runoff: Effects of

When gypsum was added to a Piedmont soil sample, it decreased the efficacy of PAM at polymer concentrations below 1 mg L-1. For PAM concentrations at or above 1 mg L-1, gypsum had a positive combined effect, although no significant effect occurred above 50 mg L-1 gypsum.

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the effectiveness of two soil amendments: gypsum and

The Effectiveness of Two Soil Amendments: Gypsum and

Polyacrylamide (PAM) and gypsum to soils has lasting . effect on reducing soil erosion under saline condition. The . impact of these amendments on soil erosi. on, water quality, infiltration, and runoff rate was studied under GUTSR (Griffith University Tilting-flume Simulation Rainfall) facilities.

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effect of gypsum and polyacrylamide application on

Effect of Gypsum and Polyacrylamide Application on

concentration was similar to or higher than that of soil with gypsum alone. However, the sediment concentra- tion of the soil with both gypsum and PAM showed a decrease with rainfall duration and the final sediment concentration was similar to that without gypsum treat- Fig. 2. Effects of polyacrylamide and gypsum application on sedi-

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polyacrylamide soil amendment effects on runoff and sediment

POLYACRYLAMIDE SOIL AMENDMENT EFFECTS ON RUNOFF AND SEDIMENT

indicate that the use of anionic polyacrylamide (with or without gypsum) can provide substantial benefits in reducing runoff and soil loss, and enhancing vegetation growth on very steep embankments. Keywords. Soil erosion, Erosion control, Soil amendments, Polymers, Polyacrylamide, PAM, Vegetation establishment, Reclamation, Construction sites.

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efficacy of dry granular anionic polyacrylamide (pam) on

Efficacy of dry granular anionic polyacrylamide (PAM) on

Seal formation at the soil surface during rainstorms reduces rain infiltration and leads to runoff and erosion. Surface application of dissolved polyacrylamide (PAM) mixed with gypsum was found to be effective in decreasing seal formation, runoff and erosion.

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polyacrylamide in agriculture and environmental land management

POLYACRYLAMIDE IN AGRICULTURE AND ENVIRONMENTAL LAND MANAGEMENT

evident immediately on soil incorporation, whereas other effects, such as aggregation, depend on chemical and biological processes occurring over weeks or months. Mineral conditioners can modify chemical or physical processes. Lime, for example, raises soil pH. Gypsum or lime is often used to increase soil

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controlling sodic soil erosion by electrolytes and

Controlling Sodic Soil Erosion by Electrolytes and

Abstract. The anionic polyacrylamide (PAM) is recently used to rehabilitate saline and sodic soils and control soil erosion. The research on the effectiveness of anionic PAM along with gypsum or lime application on soil erosion is rare and poorly documented.

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polyacrylamide and gypsum amendments for erosion and runoff

Polyacrylamide and gypsum amendments for erosion and runoff

Application of polyacrylamide (PAM), gypsum, or their combination generally decreases erosion and runoff. However, their benefits are uncertain for soils with varying properties. The objectives of this study were to evaluate the effects of 5 Mg ha−1 (2 tn ac−1) gypsum (5G), 20 kg ha−1 (18 lb ac−1) PAM (20P), 40 kg ha−1 (36 lb ac−1) PAM (40P), and 20 kg ha−1 (18 lb ac−1) PAM

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effect of gypsum and polyacrylamide application on

Effect of Gypsum and Polyacrylamide Application on

concentration was similar to or higher than that of soil with gypsum alone. However, the sediment concentra- tion of the soil with both gypsum and PAM showed a decrease with rainfall duration and the final sediment concentration was similar to that without gypsum treat- Fig. 2. Effects of polyacrylamide and gypsum application on sedi-

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effect of gypsum and polyacrylamides on water turbidity and

Effect of gypsum and polyacrylamides on water turbidity and

26 gypsum at 7 rates (0, 25, 50, 75, 150, 300 and 600 kg/ha) were used to treat the soil. 27 However, gypsum at the rate of 75 kg/ha was used when it was combined with each 28 polyacrylamide treatment. Polyacrylamide solutions were applied to the soil by the split 29 method of application. Soil from paddock 1 was used for this experiment. The

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polyacrylamide in agriculture and environmental land management

POLYACRYLAMIDE IN AGRICULTURE AND ENVIRONMENTAL LAND MANAGEMENT

evident immediately on soil incorporation, whereas other effects, such as aggregation, depend on chemical and biological processes occurring over weeks or months. Mineral conditioners can modify chemical or physical processes. Lime, for example, raises soil pH. Gypsum or lime is often used to increase soil

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polyacrylamide (pam) and soils

Polyacrylamide (PAM) and Soils

Abstract: Although the effects of polymers on various soil physical properties have been investigated, adsorption of polymers by soils has not been extensively studied.

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using polyacrylamide to control soil splash erosion in

Using polyacrylamide to control soil splash erosion in

Splash erosion is recognized as the first stage in soil erosion process and results from the bombing of the soil surface by rain drops. One of the soil erosion control methods is the use of chemical polymers. The purpose of this study was to investigate the effects of different rates of polyacrylamide - PAM (0, 2, 4

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infiltration and erosion in soils treated with dry pam and gypsum

Infiltration and Erosion in Soils Treated with Dry PAM and Gypsum

Gypsum added to the erosion benefits of PAM by increasing infiltration and decreasing runoff. However, mixing gypsum with dry PAM decreased the beneficial effect of PAM in reducing erosion in the silty loam soil. The mechanisms responsible for the specific effects of PAM (mixed with soil and gypsum) on rain infiltration and soil losses are

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polyacrylamide soil amendment effects on runoff and sediment

POLYACRYLAMIDE SOIL AMENDMENT EFFECTS ON RUNOFF AND SEDIMENT

polyacrylamide soil amendment effects on runoff and sediment yield on steep slopes: part i. simulated rainfall conditions Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

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