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RESEARCH ARTICLE:
Effects of water erosion on soil chemical loss under different tillage and cropping system in clay loam soil at Assosa, Ethiopia
Obsa Adugna, Shoeb Quarishi and Bobe Bedadi
School of Water Resource and Environmental Engineering, Institute of Technology, Haramaya University, Dire Dawa, Ethiopia
Article info.
Received: 29.05.17, Revised: 28.07.17, Available online: 14 August 2017.
J. Bios. Agric. Res. | Volume 14, Issue 02, pp. 1222-1230
Crossref: https://doi.org/10.18801/jbar.140217.150
Effects of water erosion on soil chemical loss under different tillage and cropping system in clay loam soil at Assosa, Ethiopia
Obsa Adugna, Shoeb Quarishi and Bobe Bedadi
School of Water Resource and Environmental Engineering, Institute of Technology, Haramaya University, Dire Dawa, Ethiopia
Article info.
Received: 29.05.17, Revised: 28.07.17, Available online: 14 August 2017.
J. Bios. Agric. Res. | Volume 14, Issue 02, pp. 1222-1230
Crossref: https://doi.org/10.18801/jbar.140217.150
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Title: Effects of water erosion on soil chemical loss under different tillage and cropping system in clay loam soil at Assosa, Ethiopia
Abstract: Soil erosion affects the sustainable use of soil resources through its influence on soil properties. Proper use of tillage can improve soil related constraints, while improper tillage may cause a range of undesirable processes. Conservation tillage like no tillage had been reported to improve the properties of the soil. Thus, the study had been carried out at Assosa Agricultural research center to evaluate the effects of tillage and cropping system on soil chemical and in situ moisture conservation. Eighteen experimental runoff plots of 8 m long and 3 m wide each were framed with corrugated iron sheets. The experimental design used was randomized complete block design (RCBD) with six treatment in factorial combinations vis-à-vis three cropping systems (sole maize, sole soya bean and intercropping of maize with soya bean), with tillage system (no tillage and convectional tillage), that were replicated three times. The treatments had shown non-significant variation for all parameters showing Enrichment ratio of ≥ 1 except some no tillage treatments. Higher enrichment ratios for clay and silt fraction were observed under conventional tillage treatments and thereby high loss of nutrients like nitrogen, available phosphorus, and organic carbon than no tillage treatments. No tillage with soya bean and no tillage with intercropping treatments had shown the value of ≤ 1 for total nitrogen and phosphorus than conventional tillage treatments. No tillage treatments in concomitant with cropping system especially intercropping had retained more nutrients than conventional tillage by reducing runoff and soil loss to Enrichment ratio of ≤ 1.This study revealed the potential of no tillage with mulch to reduce nutrient losses and enrichment ratio.
Key Words: Water erosion, Tillage, Soil nutrients and Land degradation
Abstract: Soil erosion affects the sustainable use of soil resources through its influence on soil properties. Proper use of tillage can improve soil related constraints, while improper tillage may cause a range of undesirable processes. Conservation tillage like no tillage had been reported to improve the properties of the soil. Thus, the study had been carried out at Assosa Agricultural research center to evaluate the effects of tillage and cropping system on soil chemical and in situ moisture conservation. Eighteen experimental runoff plots of 8 m long and 3 m wide each were framed with corrugated iron sheets. The experimental design used was randomized complete block design (RCBD) with six treatment in factorial combinations vis-à-vis three cropping systems (sole maize, sole soya bean and intercropping of maize with soya bean), with tillage system (no tillage and convectional tillage), that were replicated three times. The treatments had shown non-significant variation for all parameters showing Enrichment ratio of ≥ 1 except some no tillage treatments. Higher enrichment ratios for clay and silt fraction were observed under conventional tillage treatments and thereby high loss of nutrients like nitrogen, available phosphorus, and organic carbon than no tillage treatments. No tillage with soya bean and no tillage with intercropping treatments had shown the value of ≤ 1 for total nitrogen and phosphorus than conventional tillage treatments. No tillage treatments in concomitant with cropping system especially intercropping had retained more nutrients than conventional tillage by reducing runoff and soil loss to Enrichment ratio of ≤ 1.This study revealed the potential of no tillage with mulch to reduce nutrient losses and enrichment ratio.
Key Words: Water erosion, Tillage, Soil nutrients and Land degradation
HOW TO CITE THIS ARTICLE?
APA (American Psychological Association)
Adugna, O., Quarishi, S. and Bedadi, B. (2017). Effects of water erosion on soil chemical loss under different tillage and cropping system in clay loam soil at Assosa, Ethiopia. Journal of Bioscience and Agriculture Research,14(02), 1222-1230.
MLA (Modern Language Association)
Adugna, O., Quarishi, S. and Bedadi, B. “Effects of water erosion on soil chemical loss under different tillage and cropping system in clay loam soil at Assosa, Ethiopia”. Journal of Bioscience and Agriculture Research, 14.02(2017), 1222-1230.
Chicago and orTurabian
Adugna, O., Quarishi, S. and Bedadi, B. “Effects of water erosion on soil chemical loss under different tillage and cropping system in clay loam soil at Assosa, Ethiopia”. Journal of Bioscience and Agriculture Research, 14. no. 02(2017), 1222-1230.
APA (American Psychological Association)
Adugna, O., Quarishi, S. and Bedadi, B. (2017). Effects of water erosion on soil chemical loss under different tillage and cropping system in clay loam soil at Assosa, Ethiopia. Journal of Bioscience and Agriculture Research,14(02), 1222-1230.
MLA (Modern Language Association)
Adugna, O., Quarishi, S. and Bedadi, B. “Effects of water erosion on soil chemical loss under different tillage and cropping system in clay loam soil at Assosa, Ethiopia”. Journal of Bioscience and Agriculture Research, 14.02(2017), 1222-1230.
Chicago and orTurabian
Adugna, O., Quarishi, S. and Bedadi, B. “Effects of water erosion on soil chemical loss under different tillage and cropping system in clay loam soil at Assosa, Ethiopia”. Journal of Bioscience and Agriculture Research, 14. no. 02(2017), 1222-1230.
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