Researchers from Rothamsted Research and the Agricultural Research Service have revealed that the environmental footprint of grass-fed beef production can be reduced by up to 26 % through the implementation of various mitigation techniques.

The study, conducted at the North Wyke Farm Platform in Devon – an extensively monitored and instrumented farm with a capacity of 30 cattle – aimed to assess the effectiveness of different methods in reducing emissions associated with cattle farming on pastures in southwest England.

Key findings of the study:

– Anaerobic digestion of manure (AD): The most influential strategy was the use of AD, which demonstrated the potential to reduce emissions by up to 26 %.

– Nitrification inhibitors: Implementing these inhibitors could reduce the carbon footprint of beef production by approximately 7.5 %.

– White clover fixes nitrogen: Introducing this plant to pastures could result in a 12 % reduction in emissions.

– Reducing livestock density: This scenario had the opposite effect, leading to an increase in the carbon footprint per unit of mass gain of 24.5 %. According to the model, this was due to unchanged land-related emissions and a decline in production.

Rothamsted Research notes that agriculture accounts for around 10 % of total greenhouse gas (GHG) emissions in the UK, with livestock accounting for around 56 % of this share. The study specifically looked at cattle, which contributes around 30-40 % of total livestock-related emissions.

Lead researcher Asma Jebari highlighted the importance of the study: "We believe there is significant potential to reduce the carbon footprint of beef farming simply by adopting some or all of these interventions. Our findings underscore the importance of considering emissions beyond the farm boundary and reporting on soil organic carbon when assessing the environmental impact of agricultural practices."

Despite the positive results, the researchers call for further trials and long-term evaluations to determine the sustainability and practicality of the proposed approaches. "When it comes to implementing these mitigation methods, it is essential to ensure that they are not only effective, but also economically and practically feasible for farmers," Jebari added.

This study represents a significant step towards more sustainable beef farming and can serve as a basis for future environmental strategies in UK agriculture. Spring