Summary
This scoping review synthesises experimental evidence on how autonomous mechanical weeding robots affect soil functions and crop production in climate-smart agricultural systems. The authors propose a framework identifying two pathways of robot impact: altered machinery intensity and traffic patterns, and repeated shallow soil disturbance. The review reveals significant evidence gaps regarding cumulative effects of repeated mechanical disturbance, soil function changes in diversified cropping systems, and longer-term soil property shifts including compaction and carbon sequestration.
UK applicability
Findings are applicable to UK arable farming as mechanical weeding robots represent an emerging technology for sustainable weed management without synthetic herbicides. However, the review notes limited existing evidence on soil impacts in UK-relevant conditions, suggesting further research is needed before widespread adoption recommendations can be made for British farming systems.
Key measures
Weeding efficiency, crop production outcomes, soil physical properties, soil hydrological functions, soil biogeochemical functions, soil compaction, carbon sequestration, soil aggregate composition
Outcomes reported
This scoping review synthesised experimental studies quantifying robot-induced changes in crop production and soil properties. The review identified that existing evidence is heavily skewed towards productivity outcomes, particularly weeding efficiency, whilst soil physical, hydrological and biogeochemical functions remain largely unquantified.
Topic tags
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