Contour Hedgerows and Grass Strips in Erosion and Runoff Control on Sloping Land in Semi-Arid Kenya

Kinama, J.M.; Stigter, C.J.; Ong, C. K.; Ng’ang’a, J.K.; Gichuki, FN

doi:10.1080/15324980601074545

Cited by 53 publications

(22 citation statements)

References 22 publications

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“…Since hedgerows were able to control soil erosion by mechanical blocking (Lin et al 2007;Kinama et al 2007), Yan et al (2010) reported that, in purple soil with a slope of 10 and 15°under the same soil moisture conditions and 130 mm h −1 rainfall intensity, critical slope lengths of rill were 6.13 and 4.12 m, respectively. In this field study, the pitch of two belts of contour mulberry (T1) was 4.4 m long with a 9°slop, which could potentially reduce soil erosion.…”

Section: Discussionmentioning

confidence: 98%

Reducing soil erosion and nutrient loss on sloping land under crop-mulberry management system

Fan

Xie

Wei

et al. 2015

Environ Sci Pollut Res

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Sloping croplands could result in soil erosion, which leads to non-point source pollution of the aquatic system in the Three Gorges Reservoir Region. Mulberry, a commonly grown cash plant in the region, is traditionally planted in contour hedgerows as an effective management practice to control soil erosion and non-point source pollution. In this field study, surface runoff and soil N and P loss on sloping land under crop-mulberry management were investigated. The experiments consisted of six crop-mulberry treatments: Control (no mulberry hedgerow with mustard-corn rotation); T1 (two-row contour mulberry with mustard-corn rotation); T2 (three-row contour mulberry with mustard-corn rotation); T3 (border mulberry and one-row contour mulberry with mustard-corn rotation); T4 (border mulberry with mustard-corn rotation); T5 (two-row longitudinal mulberry with mustard). The results indicated that crop-mulberry systems could effectively reduce surface runoff and soil and nutrient loss from arable slope land. Surface runoff from T1 (342.13 m(3) hm(-2)), T2 (260.6 m(3) hm(-2)), T3 (113.13 m(3) hm(-2)), T4 (114 m(3) hm(-2)), and T5 (129 m(3) hm(-2)) was reduced by 15.4, 35.6, 72.0, 71.8, and 68.1%, respectively, while soil loss from T1 (0.21 t hm(-2)), T2 (0.13 t hm(-2)), T3 (0.08 t hm(-2)), T4 (0.11 t hm(-2)), and T5 (0.12 t hm(-2)) was reduced by 52.3, 70.5, 81.8, 75.0, and 72.7%, respectively, as compared with the control. Crop-mulberry ecosystem would also elevate soil N by 22.3% and soil P by 57.4%, and soil nutrient status was contour-line dependent.

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Section: Discussionmentioning

confidence: 98%

Reducing soil erosion and nutrient loss on sloping land under crop-mulberry management system

Fan

Xie

Wei

et al. 2015

Environ Sci Pollut Res

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“…A positive relationship between temperature and time (R 2 =0.75) is an indication of a strong association between temperature and time. Possible effects for the rise of temperatures are the depressed vegetation growth for less drought tolerant plants, dominance of the aridity tolerant plants such as Prosopis and high water losses through evapotranspiration (Kinama et al, 2005). Elsewhere, other studies in the ASALs showed that soil evaporation can take upto 50% of seasonal total rainfall (Kinama et al, 2005).…”

Section: Resultsmentioning

confidence: 99%

Temporal relationship between climate variability, Prosopis juliflora invasion and livestock numbers in the drylands of Magadi, Kenya

Kyuma¹,

Wahome²,

M³

et al. 2016

Afr. J. Environ. Sci. Technol.

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“…Under agroforestry system, soil physical properties were maintained similar to soil under natural vegetation (Tamang et al, 2014). It also improves water use efficiency by reducing the unproductive components of the water balance (Ong et al, 2002), such as soil evaporation loss (Kinama et al, 2007). Previously, positive effect of nitrogen was studied on intercropping for forage production.…”

Section: Dry Biomass Accumulation (T/ha)mentioning

confidence: 99%

Effect of Nitrogen, shading and intercropping on alfalfa-ziziphus agroforestry system under arid land conditions

2016

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<p>To assess the arid lands agroforestry potential, a field experiment was performed at the Agricultural Research Station of King Abdulaziz University, located at Hada Al-Sham during the 2013 and 2014 seasons. Alfalfa was evaluated in a <em>Ziziphus</em> agroforestry system at a distance of 1 m, 2 m and 4 m from the ziziphus tree and were supplied with three different levels of nitrogen fertilizer 0 kg/ha, 200 kg/ha and 400 kg/ha in the form of commercial Urea. The fertilizer were subdivided into split doses and applied as manual broadcasting after each cutting. A split-split plot design was used with three replications. Forage growth rate and biomass accumulation were measured at ten different intervals approximately at a period of 30-40 days. Forage was harvested in 10 different cuts and all this data consisting of plant height, fresh biomass accumulation and dry biomass accumulation and leaf nitrogen content were also measured. Statistical analysis described significant impact for intercropping, planting distance and nitrogen fertilizer on all studied traits. The maximum effect of urea fertilizer was documented for the highest dose of 400 kg/ha but it was statistically non-significant to 200 kg/ha. Distance of planting from the Ziziphus tree produced variable trend for all forages at different cut numbers but 2 m produced maximum plant height and biomass accumulation for most of the cut numbers. The interaction of 200 kg N/ha, intercropping and 2 m distance produced optimum forage growth and biomass accumulation as compared to the sole plantation under no fertilization. </p>

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Contour Hedgerows and Grass Strips in Erosion and Runoff Control on Sloping Land in Semi-Arid Kenya

Cited by 53 publications

References 22 publications

Reducing soil erosion and nutrient loss on sloping land under crop-mulberry management system

Reducing soil erosion and nutrient loss on sloping land under crop-mulberry management system

Temporal relationship between climate variability, Prosopis juliflora invasion and livestock numbers in the drylands of Magadi, Kenya

Effect of Nitrogen, shading and intercropping on alfalfa-ziziphus agroforestry system under arid land conditions

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