Reducing sediment concentration and soil loss using organic and inorganic amendments at plot scale

Sadeghi, Seyed Hamidreza; Gholami, Leila; Homaee, Mehdi; Darvishan, Abdulvahed Khaledi

doi:10.5194/sed-7-63-2015

Cited by 18 publications

(33 citation statements)

References 56 publications

(39 reference statements)

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“…Straw mulch (with or without tied ridges) was efficient in reducing soil loss from cultivated land. The positive effect of crop residue mulching on soil loss in cultivated lands has also been documented in other ecosystems in the world (Adekalu et al , ; Fernández & Vega, ; Gholami et al , ; Mwango et al , ; Prosdocimi et al , ; Sadeghi et al , ). The good performance of the straw mulch for decreasing soil loss was associated with its good performance in decreasing runoff and sediment concentration compared with the control.…”

Section: Discussionsupporting

confidence: 89%

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Effect of In Situ Water Harvesting Techniques on Soil and Nutrient Losses in Semi‐Arid Northern Ethiopia

et al. 2016

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Land degradation, mainly due to soil erosion and nutrient losses, is a global problem for sustainable agriculture. Farmlands in the Ethiopian highlands are susceptible to water erosion because of steep slopes and extensive cultivation. A field experiment was conducted in the Gule sub‐watershed in northern Ethiopia to assess the efficacy of in situ water harvesting techniques in reducing soil and nutrient losses. The research was carried out on a sandy clay loam soil under semi‐arid conditions. Soil erosion and nutrient losses were monitored during the rainy season (June to September) in 2013 and 2014. Five treatments with tied ridges, wheat‐straw mulch and effective microorganisms, alone or in combination, and an untreated control were tested. Combined tied ridges and straw mulch, with and without effective microorganisms, significantly reduced average soil loss over the two rainy seasons by 82 and 90% respectively compared with the control. Tied ridges alone reduced average soil loss by 60%. Straw mulch with and without effective microorganisms decreased average soil loss by 81 and 85% respectively. Combined tied ridges and straw mulch significantly decreased average total nitrogen and total phosphorus losses by 82 and 83% respectively. Average nutrient losses were also significantly decreased by tied ridges (59% for nitrogen, 52% for phosphorus) and straw mulch (63% for nitrogen, 68% for phosphorus). Our results indicated that in situ water harvesting techniques can effectively reduce soil and nutrient losses from farmland and were more efficient when the techniques were combined. Copyright © 2016 John Wiley & Sons, Ltd.

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Section: Discussionsupporting

confidence: 89%

“…The good performance of the straw mulch for decreasing soil loss was associated with its good performance in decreasing runoff and sediment concentration compared with the control. This result was also confirmed by other researchers (Gholami et al , ; Sadeghi et al , ; Sadeghi et al , ; Prosdocimi et al , ).…”

Section: Discussionsupporting

confidence: 89%

Effect of In Situ Water Harvesting Techniques on Soil and Nutrient Losses in Semi‐Arid Northern Ethiopia

et al. 2016

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“…The use of flumes under simulated rainfall is worldwide known, and it is accepted that they increase the accuracy and the number of high‐quality measurements (Moreno‐Ramón et al, ; Lassu et al, ; Sadeghi et al, ). Experimental design used in this study [detailed in Aksoy et al ()] consists of an indoor laboratory rainfall simulator and an erosion flume (Figure a).…”

Section: Methodsmentioning

confidence: 99%

Empirical Sediment Transport Models Based on Indoor Rainfall Simulator and Erosion Flume Experimental Data

2016

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Land degradation processes start with accelerated runoff and sediment delivery. In this study, rainfall‐runoff induced sediment transport is investigated using data from an indoor laboratory experimental setup consisting of a rainfall simulator and an erosion flume. The data are analysed to develop empirical models using sediment discharge, slope, flow discharge, rainfall intensity and sediment size. Fine and medium sands are considered as bare soil in experiments. Four rainfall intensities (45, 65, 85 and 105 mm h−1) are applied with combinations of lateral and longitudinal slopes of 5%, 10%, 15% and 20%. Eighty experiments are conducted. Flow is measured, and sediment within flow is separated and weighted. Experimental data are used for developing empirical models through multiple regression with parameters optimized by genetic algorithm. Results show that slope is the main contributing variable to the sediment transport over hillslopes. Accommodating variables among slope, rainfall intensity, flow discharge and median diameter of sediment as independent variables, one‐variable, two‐variable and four‐variable models are developed considering also that higher number of parameters increases the performance of the model with higher cost of parameterization. Copyright © 2016 John Wiley & Sons, Ltd.

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“…Organic amendments increase soil organic matter content thus improving soil physical, chemical and biological properties, and therefore, can confer drought resistance to soils (Tejada et al ., ; Lozano‐Garcia et al ., ; Hueso et al ., ; Khaliq & Kaleem Abbasi, ; Parras‐Alcántara et al ., ). However, the effect of organic matter on soil physical, chemical and biological properties depends on its chemical composition (Tejada et al ., , ; Ferreras et al ., ; Mahmoodabadi & Heydarpour, ; Sadeghi et al ., ; Yazdanpanah et al ., ).…”

Section: Introductionmentioning

confidence: 98%

Soil Biology Changes as a Consequence of Organic Amendments Subjected to a Severe Drought

et al. 2017

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Effect of severe drought events in combination with organic amendments (municipal solid waste, MSW, sheep manure, SM, and cow manure, CM) on soil dehydrogenase, urease, β‐glucosidase and phosphatase activities and microbial community by analyzing phospholipid fatty acids was studied under controlled laboratory conditions for one year. Two levels of irrigation were used: (1) watered soils, where the soils were maintained at 60% of their water holding capacity through the experiment, and (2) non‐watered soils, without irrigation through the experiment. The severe drought conditions negatively affected the soil enzymatic activities and total bacterial and fungal PLFA concentrations. The application of organic amendments to the soil subjected to severe drought increased soil water retention and encouraged the growth and activity of soil microbial populations. However, the chemical composition of the organic matter applied to the soil also strongly influenced soil moisture. In non‐watered soils and compared with the unamended soil, the dehydrogenase activity was 71 · 3%, 60 · 9% and 38 · 6% higher in the soil with SM, CM and MSW, respectively. Urease activity was 60 · 6%, 51 · 5% and 37% higher in the soil with SM, CM and MSW, respectively. β‐glucosidase and phosphatase activities had a similar trend. Water retention was higher when the organic wastes applied to the soils had a higher content of humic acids than fulvic acid contents. Copyright © 2016 John Wiley & Sons, Ltd.

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Reducing sediment concentration and soil loss using organic and inorganic amendments at plot scale

Cited by 18 publications

References 56 publications

Effect of In Situ Water Harvesting Techniques on Soil and Nutrient Losses in Semi‐Arid Northern Ethiopia

Effect of In Situ Water Harvesting Techniques on Soil and Nutrient Losses in Semi‐Arid Northern Ethiopia

Empirical Sediment Transport Models Based on Indoor Rainfall Simulator and Erosion Flume Experimental Data

Soil Biology Changes as a Consequence of Organic Amendments Subjected to a Severe Drought

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