Impacts of Land Use on Selected Physicochemical Properties of Soils of Abobo Area, Western Ethiopia

Yitbarek, Teshome; Gebrekidan, Heluf; Kibret, Kibebew; Beyene, Shelem

doi:10.11648/j.aff.20130205.11

Cited by 50 publications

(76 citation statements)

References 11 publications

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“…The (Alemu et al 2016). Similar order of distribution of these cations was reported by several studies (Teshome et al 2013;Asmare et al 2015;Okubay et al 2015). Antagonistic effects are known to exist between Mg and K (FAO 2006) when disproportionate quantities of the cations are present in soil.…”

Section: Exchangeable Cations and Exchange Propertiessupporting

confidence: 88%

Chemical forms of phosphorous and physicochemical properties of acid soils of Cheha and Dinsho districts, southern highlands of Ethiopia

et al. 2018

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Background: Soil acidity and low availability of P are among the major problems limiting crop production in the highlands of Ethiopia. The current study was conducted to evaluate the distribution of chemical P forms and selected physical and chemical properties of soils in Cheha and Dinsho districts, southern highlands of Ethiopia. Twelve representative composite soil samples were collected from the surface layer (0-15 cm) and analyzed for selected soil properties. Analysis of available P and oxalate extractable P, Al and Fe, and P fractionation were done following standard procedures. Results:The pH of soils in the study area ranged from 4.65 to 5.45. In the study area the Mehlich-3 extractable P ranged from 8.90 to 25.75 mg kg −1 , while the Bray-I extractable P varied from 8.54 to 22.81 mg kg −1. The studied soils had a total P content that ranged from medium to very high. Mehlich-3 P was positively and significantly correlated with pH, CEC and OM, while it was negatively and significantly (P ≤ 0.01) correlated with exAc and exAl. Oxyhydroxides of iron and aluminum were dominating the exchange sites of the studied soils. In terms of the relative abundance of P forms, Res-P and HCl-P followed by NaOH-P o and NaOH-P i were the dominant P forms in Cheha and Dinsho districts respectively. The total sum of readily available P forms (NH 4 Cl-P i , NaHCO 3 -P i and NaHCO 3 -P o ) did not exceed 4% of the total P. Conclusion:Soils of the study area were acidic in reaction and found to have low available P. Given the presence of considerable amount of total P, low P availability and high soil acidity in the study areas, further research has to be done on adsorption characteristics to determine the P requirements of the soils for better P management.

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Section: Exchangeable Cations and Exchange Propertiessupporting

confidence: 88%

Chemical forms of phosphorous and physicochemical properties of acid soils of Cheha and Dinsho districts, southern highlands of Ethiopia

et al. 2018

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“…Numerically, highest mean value of silt (18.33%) was recorded in the natural forest. It contradicts with the study conducted by Teshome et al (2013) in impacts of land use on selected physicochemical properties of soils in Abobo area, western Ethiopia. Their finding revealed that silt content was significantly (P < 0.01) higher in cultivated land than forest.…”

Section: Effects Of Soil and Water Conservation On Selected Soil Physcontrasting

confidence: 73%

Effects of Soil and Water Conservation Practices in Selected Soil Physicochemical Properties: The Case of Ezha District, Southern Ethiopia

2019

JBAH

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Soil erosion is one of the major factors that lead to poor soil productivity in Sub-Saharan Africa. Ever increasing population has driven the populace to inhabit marginal frontiers worsening the soil erosion and food insecurity. Farmers in the study area cultivate formerly untouched communal lands and forest lands by clearing natural vegetations. This exposes to soil fertility loss due to soil erosion resulting in a decline in crop yield. Therefore, this study was aimed at evaluating the effects of soil and water conservation measures on selected soil physicochemical properties in the study area. To determine the effect of soil and water conservation on the selected soil properties, soil analysis was undertaken by taking composite soil samples from conserved and unconserved lands of adjacent sites after categorizing their slopes in to three levels (low, medium and high). Composite soil samples from natural forest were taken and analyzed, and used as control. Most of the selected soil physicochemical properties were affected by soil and water conservation measures. Highest bulk density (1.56g/cm 3) was recorded in the unconserved land. The highest mean value of soil moisture content (22.2%) was recorded in the forest soil. Comparing the two farm lands, higher mean values of soil pH, organic matter, organic carbon, total nitrogen, available phosphorus, cation exchange capacity, exchangeable calcium and magnesium were also recorded in the conserved land. Considering the recorded values, the study recommends that implementation of soil and water conservation should be widely practiced in the district. In order to enhance the community adoption towards soil and water conservation, further effort is required.

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“…Other studies also showed that the involvement of farmers in different soil management practices and land use types put impact on soil fertility and productivity (Karltun et al 2013a;Moges et al 2013;Yitbarek et al 2013;Gebreselassie et al 2015). For instance, the report from wheat growing highlands of southeast Ethiopia indicated very low return of crop residue, lack of crop rotation, low rate of mineral fertilizer application and absence of long term fallowing (Belachew and Abera 2010).…”

Section: Introductionmentioning

confidence: 99%

Physiographic characteristics of agricultural lands and farmers’ soil fertility management practices in Wolaita zone, Southern Ethiopia

et al. 2016

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Background: Understanding the landscape features of agricultural lands and soil management practices is pertinent to verify the potential and limitations of the soil resources; and devise relevant land management strategies. However, information is lacking in Wolaita, Southern Ethiopia. Thus, this study aimed at investigating the physiographic characteristics of agricultural lands, farmers' soil fertility management practices and their influences on soil fertility and crop productivity was conducted. The survey involved 789 randomly sampled agricultural lands. Soil sample as well as data on slope, topography, land use, crop rotation, fallowing, cropping intensity, crop residue management, fertilizer use and farmers' estimated crop yield were collected and evaluated. Results:The result indicated that agriculture has been practiced under diverse slope positions (1-58%). This significantly influenced most of soil physico-chemical properties in which an increase in soil bulk density, and decrease in available phosphorous, exchangeable calcium, extractable boron, copper, iron and zinc with an increase in slope positions were recorded. Furthermore, continuous cultivation without any fallow periods and complete crop residue removal (96%) were common practices. Fertilizer use was not sufficient. The average use (kg ha −1 ) was 30 and 9 for diammonium phosphate (DAP) and urea, respectively, and about 89% of study area received manure below 1.5 t ha −1 . All these limitations made farmers to experience lower crop yield than the national average estimates. Conclusion:Based on the result, it is possible to conclude that the following soil management interventions such as soil conservation, application of sufficient organic and inorganic fertilizers are recommended to restore the soil fertility and improve crop productivity.

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Impacts of Land Use on Selected Physicochemical Properties of Soils of Abobo Area, Western Ethiopia

Cited by 50 publications

References 11 publications

Chemical forms of phosphorous and physicochemical properties of acid soils of Cheha and Dinsho districts, southern highlands of Ethiopia

Chemical forms of phosphorous and physicochemical properties of acid soils of Cheha and Dinsho districts, southern highlands of Ethiopia

Effects of Soil and Water Conservation Practices in Selected Soil Physicochemical Properties: The Case of Ezha District, Southern Ethiopia

Physiographic characteristics of agricultural lands and farmers’ soil fertility management practices in Wolaita zone, Southern Ethiopia

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