Short-term effects of conservation agriculture on Vertisols under tef (Eragrostis tef (Zucc.) Trotter) in the northern Ethiopian highlands

Oicha, Tigist; Cornelis, Wim; Verplancke, Hubert; Nyssen, Jan; Govaerts, Bram; Behailu, Mintesinot; Haile, Mitiku; Deckers, Jozef

doi:10.1016/j.still.2009.12.004

Cited by 71 publications

(47 citation statements)

References 53 publications

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“…3.6), and the resulting estimates of the RUSLE model. Reduction in runoff on raised beds under minimum or no tillage has been reported before for other soils (Boulal et al, 2008;Jordán et al, 2010;Verhulst et al, 2011;Zhang et al, 2007), as well as reduction of soil loss under permanent beds (Oicha et al, 2010). Reduction of soil loss was attributed to increased soil macro-porosity associated with greater macro-fauna activity (Kay and Vanden Bygaart, 2002;Ruan et al, 2001;Trojan and Linden, 1998), reduced soil surface sealing (Mannering and Meyer, 1963), and increased soil surface roughness through the presence of crop residues, which enhance flow path tortuosity slowing down the water flow rate across the soil surface (Findeling et al, 2003).…”

Section: Runoff and Erosionsupporting

confidence: 63%

Regenerating degraded soils and increasing water use efficiency on vegetable farms in Uruguay through ecological intensification

Alliaume¹

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Section: Runoff and Erosionsupporting

confidence: 63%

Regenerating degraded soils and increasing water use efficiency on vegetable farms in Uruguay through ecological intensification

Alliaume¹

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“…These processes lead to increased runoff and erosion losses that are strongly linked to topsoil. Therefore, the practice of judicial water conservation undoubtedly plays a significant role in increasing agricultural production in the sub-humid areas where agriculture is hampered by periodic droughts and low soil fertility (Oicha et al, 2010).…”

Section: Discussionmentioning

confidence: 99%

Response of phosphorous fertilizer and its recommendation for food barley (Hordium vulgare L.) production on Nitisols of central Ethiopian highlands

Admassu¹

2017

Afr. J. Agric. Res.

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) with three replications. Results revealed that yield and yield components of food barley were significantly affected by P fertilizer application. Phosphorous fertilizer application at different rates increased grain yield of food barley by 23 to 46% compared to the control. Available soil test P concentrations analyzed three weeks after planting were affected significantly by P fertilizer application rate. Relative yield and Bray-2 soil test phosphorous value correlation indicated that soil test phosphorous values greater than 13 mg kg -1 was found to be sufficient for food barley production. The average phosphorous requirement factor (P f ) calculated from soil test phosphorous values of all treatments for study area was 10.2. Most sites tested had Bray 2 P values <10 mg kg −1 . In the absence of a soil test, a recommendation of 40 kg P ha -1 , resulting in the best response overall, could be made for the first year of application. It was also recommend that to prevent a potential loss of barley yield, a maintenance application of at least 5 to 10 kg P ha −1 be applied every year, irrespective of the calculated recommended rate, in order to replace P exported from the field in the form of grain and straw yield. Further field trials are required to determine interactions between P response and the effects of climate, soil properties, and other management practices.

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“…A higher SMC (%) was observed under EBCSTS than CBCVTS land use types. This was due to the presence of higher SOC (%) and hence formation of stable soil aggregate in EBCSTS [4,6,29,36,43]. Concurrently, higher SMC (%) was observed at 15-30 cm across land use types (Table 3).…”

Section: Soil Physical Propertiesmentioning

confidence: 99%

“…Bulk density was lower in soil under the EBCSTS than in CBCVTS (Table 3). This was due to continuous addition of soil organic residues on the surface soil layer [2,6,35,36]. In CBCVTS, the continuous tillage operation and thereby lowering of soil organic carbon (SOC) might have contributed for increased soil bulk density [6,13,29,31,[37][38][39][40].…”

Section: Soil Physical Propertiesmentioning

confidence: 99%

Soil Quality Variation under Enset based Conservation Tillage and Cereal based Conventional Tillage System in Southern Highlands of Ethiopia

Ketema¹

2015

APAR

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With the objectives of assessing the variation of soil quality indicators; two land use types: Enset based conservation tillage system (EBCSTS) and Cereal based conventional tillage system (CBCVTS) were selected in Gedeo zone, Bule woreda, Southern Ethiopia. A total of 48 composite and undisturbed (for bulk density determination) soil samples (2 land use types_4 blocks_3 replication_2 soil depth: 0-15 cm and 15-30 cm) were collected for laboratory analysis. The result showed that soil textural fractions (sand, p<0.001; silt, p = 0.003 and clay = p = 0.001) and soil pH (p<0.001) significantly varied with land use types. Moreover, soil moisture content (p<0.001), bulk density (p = 0.016, p = 0.002), SOC (p<0.001), TN (p<0.001) and CEC (p<0.001, p = 0.001) have shown significant variation with land use types and soil depth respectively. Sand and clay were higher in EBCSTS and CBCVTS, respectively. Higher amount of sand fraction was observed under 0-15 cm on EBCSTS and 15-30 cm on CBCVTS land use types. Lower soil bulk density (g cm -3 ) and higher amount of SOC (%), TN (%), soil pH, CEC (meq/100g soil) and SMC (%) were observed at 0-15 cm soil layer under the EBCSTS. Soil bulk density (g cm -3 ), soil pH and SMC (%) increased while SOC (%), CEC (meq/100g soil) and TN (%) decreased with soil depth in both land use types. Improvement in the soil quality under EBCSTS was due to the presence of less soil disturbance coupled with higher addition of organic matter (SOM) in the soil. Thus, through implementing EBCSTS, it is possible to protect and maintain soil qualities for sustainable soil management and cropping practices in the area.

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Short-term effects of conservation agriculture on Vertisols under tef (Eragrostis tef (Zucc.) Trotter) in the northern Ethiopian highlands

Cited by 71 publications

References 53 publications

Regenerating degraded soils and increasing water use efficiency on vegetable farms in Uruguay through ecological intensification

Regenerating degraded soils and increasing water use efficiency on vegetable farms in Uruguay through ecological intensification

Response of phosphorous fertilizer and its recommendation for food barley (Hordium vulgare L.) production on Nitisols of central Ethiopian highlands

Soil Quality Variation under Enset based Conservation Tillage and Cereal based Conventional Tillage System in Southern Highlands of Ethiopia

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