Summary This article summarises the views of a panel of experts from the areas of agricultural economics, ecology, agri‐environmental policy and agricultural extension who were bought together for a novel workshop on agri‐environment schemes conducted at the Agricultural Economics Society's 91st Annual Conference. The panel discussed the past, present and future of European Union agri‐environment schemes with emphasis on the movement from top‐down action‐based schemes to participatory‐partnership results‐based schemes. Pierre Dupraz, an expert in economic evaluations of agri‐environment schemes, pointed out past issues of agri‐environment schemes including the conflicting objectives and the growing complexity. James Moran, an ecologist who has been involved in the design of results‐based schemes, identified the importance of designing schemes that are adaptable and incentivise farmers to improve. Ronan O'Flaherty, a senior policymaker involved in new scheme design in Ireland, shone a light on the policy behind agri‐environment schemes and the importance of stakeholder buy‐in. Pat Murphy, a knowledge transfer specialist involved in the implementation of agri‐environment schemes, discussed the importance that knowledge transfer must play in the future of agri‐environment schemes. Together the speakers identified the challenges faced in designing and implementing agri‐environment schemes that improve environmental outcomes whether they be action or results‐based.
The Carbon Navigator has been developed to support the objective of reducing the carbon intensity of the dairy and beef sectors of Irish agriculture. The system is designed as a knowledge transfer (KT) tool aimed at supporting the realisation at farm level of the mitigation potential. The objective of this paper is to outline the potential role of KT in reducing greenhouse gas emissions in the context of a growing body of science, which identifies potential mitigation. The EU policy framework for agriculture and the environment is examined in terms of its effectiveness in supporting the reduction in emission intensity of agriculture. The important role for KT in reducing agricultural emissions is highlighted. The Carbon Navigator is introduced as a potential aid to achieving improved adoption of emission-reducing technologies and practices at farm level. The paper outlines the criteria guiding the selection of mitigation technologies in Irish ruminant agriculture, describes the technologies and practices included in the system and outlines the basis for their inclusion. The approach of developing the Carbon Navigator to integrate into existing infrastructure and data systems as well as into the existing KT systems is outlined.
The rapidly changing global climate due to increased emission of anthropogenic greenhouse gases (GHGs) is leading to an increased occurrence of extreme weather events such as droughts, floods, and heatwaves. The three major GHGs are carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O). The major natural sources of CO2 include ocean–atmosphere exchange, respiration of animals, soils (microbial respiration) and plants, and volcanic eruption; while the anthropogenic sources include burning of fossil fuel (coal, natural gas, and oil), deforestation, and the cultivation of land that increases the decomposition of soil organic matter and crop and animal residues. Natural sources of CH4 emission include wetlands, termite activities, and oceans. Paddy fields used for rice production, livestock production systems (enteric emission from ruminants), landfills, and the production and use of fossil fuels are the main anthropogenic sources of CH4. Nitrous oxide, in addition to being a major GHG, is also an ozone-depleting gas. N2O is emitted by natural processes from oceans and terrestrial ecosystems. Anthropogenic N2O emissions occur mostly through agricultural and other land-use activities and are associated with the intensification of agricultural and other human activities such as increased use of synthetic fertiliser (119.4 million tonnes of N worldwide in 2019), inefficient use of irrigation water, deposition of animal excreta (urine and dung) from grazing animals, excessive and inefficient application of farm effluents and animal manure to croplands and pastures, and management practices that enhance soil organic N mineralisation and C decomposition. Agriculture could act as a source and a sink of GHGs. Besides direct sources, GHGs also come from various indirect sources, including upstream and downstream emissions in agricultural systems and ammonia (NH3) deposition from fertiliser and animal manure.
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