Sustainability of agricultural practices in Germany: a literature review along multiple environmental domains

Abstract

Abstract Promoting and increasing the uptake of sustainable agricultural practices poses a major challenge for European agricultural policy. The scientific evidence for potentially relevant and environmentally beneficial practices, however, is scattered among numerous sources. This article examines the state of knowledge regarding agri-environmental practices and their impact on various domains of the environment (climate change, soil, water and biodiversity). The selection was restricted to practices applicable to German farmers. Ninety-eight literature reviews and meta-analyses assessing the environmental impacts of agri-environmental practices in the German context were found in a systematic review of the academic literature from 2011 onwards. A total of 144 agricultural management practices were identified that contribute toward achieving certain environmental objectives. The practices were clustered in eight categories: (1) Fertilizer strategies, (2) Cultivation, (3) Planting: vegetation, landscape elements & other, (4) Grazing strategies, (5) Feeding strategies, (6) Stable management, (7) Other, (8) Combined practices & bundles. The findings of this study suggest that some general patterns can be observed regarding the environmental benefits of different practices. While it is possible to derive recommendations for specific practices in terms of individual environmental objectives, their relevance is likely to be context-dependent. Moreover, this study reveals that bundles of practices can have positive synergistic impacts on the environment. Notably, only few reviews and meta-analyses considered the implementation and opportunity costs of environmentally beneficial practices. Agri-environmental policies need to consider the broad range of practices that have been shown to impact the environment positively, including their costs, and provide context-specific incentives for farmers to adopt them.