Effect of Polyacrylamide integrated with other soil amendments on runoff and soil loss: Case study from northwest Ethiopia

Kebede, Birhanu; Tsunekawa, Atsushi; Haregeweyn, Nigussie; Tsubo, Mitsuru; Mulualem, Temesgen; Mamedov, A. I.; Meshesha, Derege Tsegaye; Adgo, Enyew; Fenta, Ayele Almaw; Ebabu, Kindiye; Masunaga, Tsugiyuki

doi:10.1016/j.iswcr.2021.12.001

Cited by 29 publications

(18 citation statements)

References 53 publications

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“…Similar results were observed by other researches [7,23]. On the other hand, Kebede et al [24] reported lower reduction in runoff (12-39%), using alternative soil erosion amendments (Anionic polyacrylamide, gypsum, lime, biochar) in comparison to the current investigation results (reduction from 62 to 86%).…”

Section: Discussionsupporting

confidence: 92%

The Impact of Different Cultivation Practices on Surface Runoff, Soil and Nutrients’ Losses in a Rotational System of Legume – Cereal and Sunflower

Molla¹,

Skoufogianni²,

Lolas³

et al. 2022

Preprint

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Soil erosion is one of the biggest problems in the agricultural sector that can affect ecosystems and human societies. A field of 50 slope was selected to study the runoff, soil and nutrients’ loss as well as crop productivity in different treatments (conventional tillage (CT) vs. no-tillage (NT), plant vs. no plant cover, contour cultivation (CC) vs. perpendicular to the contour cultivation, (PC) under natural rainfall. The experiment was conducted in central Greece in two cultivation periods. In autumn, the field was cultivated with intercropping Triticosecale and Pisum sativum and in spring with Sunflower. The total rainfall was 141.4 mm in the 1st year and 311 mm in the 2nd. We found that runoff in the treatment of no tillage with contour cultivation was 85% lower in both years compared to the no tillage-no plant control. Therefore, the contour cultivation-no tillage treatment had a positively effect in decreasing phosphorus and potassium concentrations lost from soil: indeed, there was a decrease by 55% and 62% in P and K, respectively, in the NT compared to the CC treatments. We conclude that the NT-CC treatment with plant cover was the most effective in reducing water runoff, soil nutrients’ loss and increasing yield.

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Section: Discussionsupporting

confidence: 92%

The Impact of Different Cultivation Practices on Surface Runoff, Soil and Nutrients’ Losses in a Rotational System of Legume – Cereal and Sunflower

Molla¹,

Skoufogianni²,

Lolas³

et al. 2022

Preprint

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“…As the PAM dosage was raised, the soil saturated water content increased at first and then declined, and it was highest when the PAM dosage was 0.04%, increasing by 6.47% over the control. This occurred because once PAM was added to the soil, the tiny particles were aggregated into larger aggregates, increasing the soil porosity and thus the saturated water content [14,23]. h d is the intake suction in the Brooks-Corey model, which is the crucial suction value of soil drainage.…”

Section: Effect Of Pam Application Rate On Parameters Of Brooks-corey...mentioning

confidence: 99%

“…Polyacrylamide (PAM, (C 3 H 5 NO) n ) has good water solubility, flocculation, and chemical activity, and thus it has been explored and used as a soil structure modifier all over the world [11][12][13]. Kebede et al (2022) indicated that PAM could improve soil structure stability and reduce runoff and soil erosion [14]. Wang et al (2021) found that PAM could enhance soil wind erosion resistance [15].…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of the Different Polyacrylamide Dosages on Soil Water Movement under Brackish Water Infiltration

Zhang

Wang

et al. 2022

Polymers

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The use of soil conditioners in conjunction with brackish water irrigation is critical for the efficient development and use of brackish water as well as the enhancement of the structure of saline soil and stimulating crop growth. This study investigated the effects of different polyacrylamide (PAM) dosages (0, 0.02%, 0.04%, and 0.06%) on the water flow properties of sandy loam during brackish water infiltration using one-dimensional vertical and horizontal soil column infiltration experiments. The results showed that: (1) PAM could lower the soil infiltration rate and increase soil water retention performance under brackish water infiltration conditions. (2) PAM had a significant effect on the parameters of the Philip and Kostiakov infiltration models. The soil sorption rate S and the empirical coefficient λ were the smallest, and the empirical index β was the largest when the PAM dosage was 0.04%. (3) PAM dosage displayed a quadratic polynomial connection with the soil saturated water content and the saturated hydraulic conductivity. The soil saturated water content was highest when the PAM dosage was 0.04%, the intake suction hd of the Brooks-Corey model increased by 15.30%, and the soil water holding capacity was greatly improved. (4) Soil treated with PAM could absorb more water under the same soil water suction, whereas the soil unsaturated hydraulic conductivity and its growth rate decreased. The soil saturated diffusion rate Ds, as well as the soil water diffusion threshold, rose. Finally, the 0.04% PAM dosage could improve soil hydrodynamic characteristics under brackish water infiltration, which is beneficial for the efficient utilization of brackish water.

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“…Eight treatments were applied to plots in which teff was grown: anionic PAM (CH 2 = CH‐CONH 2 ) n (application rate 40 kg ha −1 ); lime (CaCO 3 ) (L, 4 t ha −1 ); gypsum (CaSO 4 ·2H 2 O) (G, 5 t ha −1 ); biochar (B, 8 t ha −1 ); PAM combined with lime (PAM + L), gypsum (PAM + G), or biochar (PAM + B); and a control. The rates were fixed by considering our field conditions and relevant literatures (Kebede et al, 2022; Mulualem et al, 2021a). Detail properties of the applied soil amendments are presented in Table S1 and again the origin, preparation procedures, methods, and time of applications are also well discussed in Mulualem et al (2021a).…”

Section: Methodsmentioning

confidence: 99%

Dual benefits of polyacrylamide and other soil amendments: Mitigation of soil nutrient depletion and improvement of use‐efficiency in midland agro‐ecology, Ethiopia

et al. 2022

Self Cite

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Polyacrylamide (PAM) mitigates soil nutrient depletion and increases nutrient utilization; however, the effect of PAM combined with other amendments have not been tested much under field condition. The objective of our study was, therefore, to identify the best combination of amendments that can improve soil nitrogen (N) and phosphorus (P) balances while maximizing utilization efficiency and profitability under teff cultivation. A field experiment was carried out for 2 years in the midland agroecology of Ethiopia. A total of 24 experimental plots were designed using RCBD with three replications. The treatments were PAM (40 kg ha À1 ), biochar (B = 8 t ha À1 ), lime (L = 4 t ha À1 ), gypsum (G = 5 t ha À1 ), PAM+B, PAM+L, PAM+G, and a control.N and P inflows from atmospheric deposition, biological fixation, and fertilizers; and outflows by water erosion, leaching, gaseous emissions, and harvested products were monitored in all plots via NUTrient MONitoring approach. Results showed that all the applied soil amendments improved nutrient balances (8-134%) compared with the control. Of the measured outflows, harvested products (43-60%) and water erosion (14-31%) were the major contributors to N depletion, followed by leaching (15-23%) and gaseous emissions (11-13%). Among the soil amendments, PAM+L appreciably reduced P loss from water erosion (61%); and N losses from erosion, leaching, and emissions by 55, 10, and 3%, respectively; and increased N use efficiency by 31% compared with the control. Moreover, PAM+L provided a net benefit much higher compared with others. Thus, application of PAM+L would be an effective strategy for sustainable agriculture, especially in acidic and degraded dryland areas.

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Effect of Polyacrylamide integrated with other soil amendments on runoff and soil loss: Case study from northwest Ethiopia

Cited by 29 publications

References 53 publications

The Impact of Different Cultivation Practices on Surface Runoff, Soil and Nutrients’ Losses in a Rotational System of Legume – Cereal and Sunflower

The Impact of Different Cultivation Practices on Surface Runoff, Soil and Nutrients’ Losses in a Rotational System of Legume – Cereal and Sunflower

Experimental Investigation of the Different Polyacrylamide Dosages on Soil Water Movement under Brackish Water Infiltration

Dual benefits of polyacrylamide and other soil amendments: Mitigation of soil nutrient depletion and improvement of use‐efficiency in midland agro‐ecology, Ethiopia

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