Summary
This field trial investigated how soil amendments influence the microhabitat quality of Lumbricus terrestris middens in minimum tillage wheat cultivation. Farmyard manure significantly increased midden size (approximately double that of compost or control plots) and endogeic earthworm abundance, whilst midden microhabitats enriched with fresh wheat leaves supported up to 2.8-fold higher mesofauna populations. The findings suggest that organic amendments enhance soil macrofauna habitat quality and associated nutrient cycling microhabitats in arable systems.
UK applicability
These findings are directly applicable to UK arable farming, as the study was conducted in the United Kingdom and addresses earthworm ecology in minimum tillage cereal systems common to British agriculture. The results support the use of farmyard manure as a soil amendment strategy to maintain earthworm populations and soil biological function in conventional arable cultivations.
Key measures
Midden dry weight (g), mesofauna abundance (springtails, enchytraeidae, mites, millipedes), endogeic earthworm counts, extractable soil nutrients (P, K, S, Mn)
Outcomes reported
The study examined macrofauna and mesofauna communities within Lumbricus terrestris middens across minimum tillage wheat plots amended with farmyard manure, compost, or left unamended. It measured midden size, nutrient composition, and associated soil invertebrate abundance in response to different soil amendments.
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