Nitrogen losses to the environment following food-based digestate and compost applications to agricultural land

Summary

This field-based study, conducted by UK research scientists, quantified the environmental nitrogen losses following application of food-based digestate and compost to agricultural land. As suggested by the title and journal scope, the work examined how different organic waste products behave in soil and which pathways dominate nitrogen loss to air and water. The findings are intended to inform best-management practices for organic waste application in temperate agricultural systems.

UK applicability

Directly applicable to UK agricultural practice and policy. The research appears to address environmental compliance under the Nitrates Directive and Waste and Contaminated Land (Northern Ireland) Order, informing guidance on digestate and compost use on UK farms.

Key measures

Nitrogen loss pathways (ammonia volatilisation, nitrous oxide emissions, nitrate leaching); application rates and timing of digestate and compost; soil nitrogen transformations

Outcomes reported

The study quantified nitrogen losses to the environment (air, water) following field applications of food-based digestate and compost to agricultural land under UK conditions. The research compared nitrogen fate and environmental pathways across different organic waste product types and application rates.

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