Effects of selected soil and water conservation technologies on nutrient losses and maize yields in the central highlands of Kenya

Okeyo, Irene; Mucheru-Muna, M.; Mugwe, J. N.; Ngetich, Felix K.; Mugendi, Daniel N.; Diels, Jan; Shisanya, C.A.

doi:10.1016/j.agwat.2014.01.014

Cited by 62 publications

(52 citation statements)

References 29 publications

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“…The lower sediment concentrations in T2–T5 were associated with the application of straw mulch in these treatments, emphasizing the role of mulch in decreasing the effects of raindrop splashes on soil surfaces (Cerdà et al , ; Okeyo et al , ) and hence slowing the detachment of soil particles. Sediment concentrations tended to decrease towards the end of the rainy season irrespective of treatment.…”

Section: Discussionsupporting

confidence: 93%

“…The effect of different soil management practices on soil erosion has also been studied in other parts of the world (Adekalu et al, 2007;Fernández & Vega, 2016;Mekonnen et al, 2015;Mwango et al, 2015;Prosdocimi et al, 2016b). In situ WHTs have been applied in a variety of climates and landscapes, mainly to improve on-site soil-water regimes and to reduce soil and nutrient losses in runoff (Adimassu et al, 2014;Al-Seekh & Mohammad, 2009;Okeyo et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

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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: 93%

Section: Introductionmentioning

confidence: 99%

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

et al. 2016

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“…Comparison of conservation treatments showed that RS had no significant effect on decreasing the runoff volume due to a string texture and abundant pores (9.01%), however, it had a significant effect on the reduction of sediment mass (57.32%) and ultimately the concentration of sediment (23.87%). These results are consistent with those found by other researchers (Yanosek et al 2006, Foltz 2012, Okeyoa et al 2014. In other words, RS (23.87%) and WS (11.61%) reduced the sediment concentration, while BWD increased it (58.06%).…”

Section: Analyzing the Results Of Runoff Sediment Concentration And supporting

confidence: 93%

Using Wood-Shred, Rice-Straw and Brush-Wood-Dams with Planting Seedlings to Runoff and Erosion Control in a Forest Road Fill Slope

Fakhari

Lotfalian

Hosseini

et al. 2019

Croat. j. for. eng. (Online)

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This study aimed to investigate the effects of two types of natural geotextiles, including wood shred (WS), rice straw (RS) and the biomechanics method of brush wood dam (BWD) with planting seedlings of Alnus glutinosa and Salix alba on runoff, soil loss and fill slope. The effects were compared with those obtained from control treatment. A total of 36 plots (2×4m) with three replicates in the direction of gradient to fill slope of a forest road in northern Iran was considered. Soil moisture, canopy cover of seedlings, vegetation coverage, runoff, sedimentation and erosion were measured in plots during 12 months. BWD and WS played an effective role in reducing runoff by 57% and 73%, respectively. By using RS and WS, the sediment concentration was decreased by 23% and 11%, respectively, while by using BWD it increased by 58%. RS (24.16%) and BWD (7%) had the greatest and smallest impact on reducing vegetation coverage, respectively. BWD (33%) and RS (27%) had the highest and lowest canopy cover of seedlings, respectively. Results showed that both RS (22.23%) and A. glutinosa (4.96%) had the greatest effects on increasing soil moisture. Comparison between the planted species and the control treatment (with no seedlings) showed that S. alba was effective in reducing runoff (46.22%), while A. glutinosa was effective in reducing erosion (66.89%) and sediment concentration (53.52%). Finally, interactions between conservation treatment and planting of seedlings played a more effective role in controlling runoff and erosion. Therefore, the application of conservation treatments together with planting of seedlings is recommended in order to provide better soil conservation and restoration of fill slope.

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“…Araştırma sonuçlarına göre, vetiver otu malcı sırasıyla yüzey akışları % 33 ve 71, toprak kayıplarını ise % 31 ve 82 oranlarında azalttığı belirlenmiştir. Yapılan bir başka araştırmada ise malçlama ve minimum toprak işlemenin, toprak kayıplarını sırasıyla kısa dönemde % 48-71, uzun dönemde % 7-41 arasında azaldığı belirlenmiştir (Okeyo et al, 2014).…”

Section: Introductionunclassified

Tütün Atığının (Serme ve Karıştırma) Tın Bünyeli Bir Toprağın Bazı Erozyon Parametreleri ve Kimyasal Özellikleri Üzerine Etkisi

Yönter

Uysal

2016

Ege Üniversitesi Ziraat Fakültesi Dergisi

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o reduce soil loss by erosion has been applied organic materials in soils are important. In this study, a loamy soil sample passed through from 8 mm sieve was placed into erosion plots which have a drain pipe and sized as 30x45x15 cm and 0, 10, 20 and 40 t/ha doses of tobacco wastes as unmixed and mixed on soil surface were given on erosion plot. 30, 60 and 90 mm/h of rainfall intensities were applied on these plots during 1 hour. Soil reaction (pH) and electrical conductivity (EC) values of experimental soils and drained waters were determined. Runoff, soil loss and drained water taken from experiment were calculated. According to the study results, unmixed applied tobacco wastes on soils were decreased runoff by 39-94%, and soil loses by 96-100, whereas increased drainage by 1-11 times, compared with controls. The mixed applied tobacco waste on soils was decreased runoff by 10-65%, and soil loses by 35-90%, whereas increased drainage 0.7-4 times compared with controls. Tobacco waste was decreased soil reaction (pH) significantly, whereas increased soil conductivity (EC) significantly. It was found that surface applied tobacco waste was more effective than mixed applied tobacco waste on reducing runoff and soil loss, and increasing drainage E T Gökçen YÖNTER Huriye UYSAL

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Effects of selected soil and water conservation technologies on nutrient losses and maize yields in the central highlands of Kenya

Cited by 62 publications

References 29 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

Using Wood-Shred, Rice-Straw and Brush-Wood-Dams with Planting Seedlings to Runoff and Erosion Control in a Forest Road Fill Slope

Tütün Atığının (Serme ve Karıştırma) Tın Bünyeli Bir Toprağın Bazı Erozyon Parametreleri ve Kimyasal Özellikleri Üzerine Etkisi

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