Bioenergy maize and soil erosion — Risk assessment and erosion control concepts

Vogel, Elisabeth; Deumlich, Detlef; Kaupenjohann, Martin

doi:10.1016/j.geoderma.2015.06.020

Cited by 79 publications

(65 citation statements)

References 44 publications

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“…Using this C value for CT plots, P was found to be 0.07, which means 7% soil loss mitigation due to the CT techniques applied. This reduction is in accordance with the results of Vogel et al [57], who found CT the most effective erosion control tool compared to grassed waterways or contoured buffer strips under maize. Moreover, Panagos et al [58] could only estimate the effect of stone walls, grassed waterways, and contour tillage on the P factor at the continental scale, because the effect of CT is still unpredictable.…”

Section: Discussionsupporting

confidence: 92%

Infiltration and Soil Loss Changes during the Growing Season under Ploughing and Conservation Tillage

et al. 2017

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Abstract:Decreased water retention and increased runoff and soil loss are of special importance concerning soil degradation of hilly crop fields. In this study, plots under ploughing (conventional) tillage (PT) and conservation tillage (CT; 15 years) were compared. Rainfall simulation on 6 m 2 plots was applied to determine infiltration and soil loss during the growing season. Results were compared with those measured from 1200 m 2 plots exposed to natural rainfalls in 2016. Infiltration was always higher under CT than PT, whereas the highest infiltration was measured under the cover crop condition. Infiltration under seedbed and stubble resulted in uncertainties, which suggests that natural pore formation can be more effective at improving soil drainage potential than can temporary improvements created by soil tillage operations. Soil erodibility was higher under PT for each soil status; however, the seedbed condition triggered the highest values. For CT, soil loss volume was only a function of runoff volume at both scales. Contrarily, on PT plots, some extreme precipitation events triggered extremely high soil loss owing to linear erosion, which meant no direct connection existed between the scales. Improved soil conditions due to conservation practice are more important for decreasing soil loss than the better surface conditions.

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Section: Discussionsupporting

confidence: 92%

Infiltration and Soil Loss Changes during the Growing Season under Ploughing and Conservation Tillage

et al. 2017

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“…Intensive soil cultivation in annual maize is accompanied by an increased risk of soil erosion, due to the slow youth development of the crop [6]. For annual maize, there is also a low to medium risk for soil compaction [55].…”

Section: Other Environmental Aspectsmentioning

confidence: 99%

Environmental Performance of Miscanthus, Switchgrass and Maize: Can C4 Perennials Increase the Sustainability of Biogas Production?

2016

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Abstract:Biogas is considered a promising option for complementing the fluctuating energy supply from other renewable sources. Maize is currently the dominant biogas crop, but its environmental performance is questionable. Through its replacement with high-yielding and nutrient-efficient perennial C4 grasses, the environmental impact of biogas could be considerably improved. The objective of this paper is to assess and compare the environmental performance of the biogas production and utilization of perennial miscanthus and switchgrass and annual maize. An LCA was performed using data from field trials, assessing the impact in the five categories: climate change (CC), fossil fuel depletion (FFD), terrestrial acidification (TA), freshwater eutrophication (FE) and marine eutrophication (ME). A system expansion approach was adopted to include a fossil reference. All three crops showed significantly lower CC and FFD potentials than the fossil reference, but higher TA and FE potentials, with nitrogen fertilizer production and fertilizer-induced emissions identified as hot spots. Miscanthus performed best and changing the input substrate from maize to miscanthus led to average reductions of −66% CC; −74% FFD; −63% FE; −60% ME and −21% TA. These results show that perennial C4 grasses and miscanthus in particular have the potential to improve the sustainability of the biogas sector.

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“…Several studies have shown that no-till significantly reduces runoff, especially under high rainfall intensity (Sun et al, 2015); reduces soil erosion, due to the undisturbed soil surface and the presence of crop residues on the soil surface (Merten et al, 2015;Vogel et al, 2016); and may reduce subsoil compaction compared with conventional tillage, which induces high soil stresses on the subsoil during in-furrow ploughing (Chamen et al, 2003). No-till may be an advantage under dry conditions, as it has been shown to improve conservation of soil water compared with conventional tillage (De Gryze et al, 2008;Jin et al, 2009;Martínez et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Two decades of no-till in the Oberacker long-term field experiment: Part I. Crop yield, soil organic carbon and nutrient distribution in the soil profile

Martínez

Chervet²,

Weisskopf

et al. 2016

Soil and Tillage Research

101

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Bioenergy maize and soil erosion — Risk assessment and erosion control concepts

Cited by 79 publications

References 44 publications

Infiltration and Soil Loss Changes during the Growing Season under Ploughing and Conservation Tillage

Infiltration and Soil Loss Changes during the Growing Season under Ploughing and Conservation Tillage

Environmental Performance of Miscanthus, Switchgrass and Maize: Can C4 Perennials Increase the Sustainability of Biogas Production?

Two decades of no-till in the Oberacker long-term field experiment: Part I. Crop yield, soil organic carbon and nutrient distribution in the soil profile

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