Greenhouse gas fluxes from agricultural soils under organic and non-organic management — A global meta-analysis

Skinner, Colin; Gattinger, Andreas; Müller, Adrian; Mäder, Paul; Flieβbach, Andreas; Stolze, Matthias; Ruser, Reiner; Niggli, U.

doi:10.1016/j.scitotenv.2013.08.098

Cited by 179 publications

(129 citation statements)

References 55 publications

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“…As eco-efficiency is certainly an important measure to be used in the mitigation of climate change in the agriculture sector, the promises of organic farming practices still need to be investigated in regard to their roles in climate-friendly agriculture. Skinner et al [69] provide scientific evidence that concerning nitrous oxide emissions, there is a discrepancy observed between organically-and conventionally-managed soils. Their meta-analysis finds that the nitrous oxide emissions resulting from organically managed soils when scaled to the area of cultivated land are lower than when crop yield-scaled.…”

Section: Discussionmentioning

confidence: 99%

In the Presence of Climate Change, the Use of Fertilizers and the Effect of Income on Agricultural Emissions

Erbas

Solakoglu

2017

Sustainability

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This study looks into the factual link between nitrogen fertilizer use and the land annual mean temperature anomalies arising from climate change, incorporating the effect of income and agriculture share to understand better their impact on emissions from agricultural activities along climate indicators. The study unearths causalities associated with this link by employing the Vector Error Correction Model (VECM) with back-dated actual panel data specifically constructed for this study by combining four datasets from 2002 to 2010. In the long-run, the causality is significant and unidirectional, indicating that income, agriculture share, and land temperature anomalies cause agricultural emissions, and that disequilibrium from such emissions is not eliminated within a year. In the short-run, the effective use of nitrogen fertilizers and other associated agricultural practices can be achieved as countries approach per capita income of 7000 USD. Changes in the structure of economies have an expected effect on agricultural emissions. Temperature anomalies increase agricultural emissions from nitrogen fertilizers, possibly due to the fact that the potential negative impacts of these anomalies are mitigated by farmers through changes in crop production inputs. Therefore, as part of adoption strategies, to avoid the excessive and inefficient use of nitrogen fertilizers by farmers, economic incentives should be aligned with the national and global incentives of sustainability.

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Section: Discussionmentioning

confidence: 99%

In the Presence of Climate Change, the Use of Fertilizers and the Effect of Income on Agricultural Emissions

Erbas

Solakoglu

2017

Sustainability

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“…Uit een wetenschappelijke meta-analyse gebaseerd op 12 studies met jaarlijkse metingen bleek dat biologisch gebruikte gronden minder N2O emissie gaven dan conventioneel gebruikte gronden, om precies te zijn 492 ± 160 kg CO2 equivalent ha -1 a -1 minder (Skinner et al 2014). Echter, de N2O emissies per eenheid geoogst product waren hoger (41 ± 34 kg CO2 equivalent t −1 DM onder biologisch management (akkerbouw).…”

Section: Figuur 7 De Carbon Footprint Van Tarwe Productie Verdeeld Iunclassified

“…Om dit te compenseren, moest het verschil in yield-gap tussen gangbaar en biologisch minder dan 17% zijn. Op dit moment is hiervan voor veel gewassen nog geen sprake (Skinner et al 2014). …”

Section: Figuur 7 De Carbon Footprint Van Tarwe Productie Verdeeld Iunclassified

Vergelijking klimaateffecten van de gangbare vs. de biologische landbouw

Meerburg

Helmes

Reijs

et al. 2018

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“…Belowground C-inputs from exudation and root sloughing from C4 grasses are high in Brachiaria pastures [46,47], forming the base for SOM-buildup in these systems. The main pathway of C-outputs is via decomposition/respiration of OM and the emission of CO 2 (and small but climate-relevant amounts of methane [48]) to the atmosphere. Leaching of labile organic matter compounds is only of minor importance [49] as such compounds will be readily acquired by microorganisms [50], erosion is virtually absent in densely vegetated mature rainforests in well-drained weathered soils [51], and CO 2 emissions via burning do not occur in dense fire-free mature rainforests (but see [52]).…”

Section: Factors Influencing Organic Matter In Soils Of the Humid Tromentioning

confidence: 99%

Improving Farming Practices for Sustainable Soil Use in the Humid Tropics and Rainforest Ecosystem Health

et al. 2016

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Abstract:Unsustainable farming practices such as shifting cultivation and slash-and-burn agriculture in the humid tropics threaten the preservation of the rainforest and the health of the local and global environment. In weathered soils prone to cohesion in humid tropic due to low Fe and carbon content and the enormous amounts of P that can be adsorbed, sustainable soil use is heavily dependent on the availability and efficient use of nutrients. This paper reviews the literature in the field and provides some insights about sustainable soil use in the humid tropics, mainly for the Brazilian Amazonia region. Careful management of organic matter and physical and chemical indicators is necessary to enhance root growth and nutrient uptake. To improve the rootability of the arable layer, a combination of gypsum with continuous mulching to increase the labile organic matter fraction responsible for the formation of a short-lived structure important for root growth is recommended, rather than tillage. Unlike mulching, mechanical disturbance via ploughing of Amazonian soils causes very rapid and permanent soil organic matter losses and often results in permanent recompaction and land degradation or anthropic savannization; thus, it should be avoided. Unlike in other regions, like southeast Brazil, saturating the soil solely with inorganic potassium and nitrogen soluble fertilizers is not recommended. Nutrient retention in the root zone can be enhanced if nutrients are added in a slow-release form and if biologically mediated processes are used for nutrient release, as occurs in green manure. Therefore, an alternative that favors using local resources to increase the supply of nutrients and offset processes that impair the efficiency of nutrient use must be pursued.

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Greenhouse gas fluxes from agricultural soils under organic and non-organic management — A global meta-analysis

Cited by 179 publications

References 55 publications

In the Presence of Climate Change, the Use of Fertilizers and the Effect of Income on Agricultural Emissions

In the Presence of Climate Change, the Use of Fertilizers and the Effect of Income on Agricultural Emissions

Vergelijking klimaateffecten van de gangbare vs. de biologische landbouw

Improving Farming Practices for Sustainable Soil Use in the Humid Tropics and Rainforest Ecosystem Health

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