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标题：Impacts of soil and water conservation practices on soil property and wheat productivity in Southern Ethiopia
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作者：Tesfaye Tanto ; Fanuel Laekemariam
期刊名称：Environmental Systems Research
电子版ISSN：2193-2697
出版年度：2019
卷号：8
期号：1
页码：1-9
DOI：10.1186/s40068-019-0142-4
语种：English
出版社：Springer
摘要：AbstractBackgroundSoil erosion and nutrient depletion have been the major challenges in Ethiopia that adversely affect soil fertility and crop productivity. With the aim of curbing land degradation problems, efforts are underway on the implementation of soil and water conservation (SWC) practices. This research investigated the effects of SWC practices on soil properties and crop productivity in cultivated lands of Bashe micro-watershed, Wolaita Zone, Southern Ethiopia. Data were collected from five different practices viz. non-conserved land, physical SWC (2 and 5 years age); and physical SWC integrated with biological practices (2 and 5 years age).ResultsThe result revealed that integrated SWC for 5 years reduced the soil bulk density; and increased soil pH (5.87 to 6.60), organic carbon (1.34 to 1.74%) and available phosphorous (8.06 to 25.23 mg kg−1) by 12%, 30% and 203% compared to non-conserved land, respectively. Agronomic analysis also indicted that SWC practices significantly (p < 0.05) enhanced plant height, tiller formation, spike length, thousand seed weight, biomass, and grain yield of wheat. Integrated SWC for 5 years increased grain yield by 72.8% than control.ConclusionIt is concluded that SWC practices have positive impacts on soil and crop productivity of cultivated lands; however, their effect is more pronounced when physical SWC practices are integrated with biological SWC practices and at a longer establishment.
关键词：KeywordsEnCrop growthFanyajuuSoil conservationSoil propertyYield