Summary
This 2024 field study investigates maize–alfalfa intercropping as a strategy to reduce dependence on nonrenewable synthetic fertiliser whilst maintaining multiple ecosystem services. The research, conducted in collaboration with soil ecologists, suggests that intercropping legumes with maize can enhance nutrient cycling and soil biological function, thereby lowering fertiliser demand without proportional losses in ecosystem service delivery. The findings contribute to understanding how diversified cropping systems can improve agricultural sustainability.
UK applicability
Maize cultivation is limited in the UK climate; however, the intercropping principles—particularly legume integration for nitrogen fixation and reduced fertiliser dependence—are directly applicable to UK arable systems using indigenous legume crops or cover crops. The soil biology and nutrient cycling mechanisms demonstrated may inform sustainable intensification strategies in temperate mixed farming.
Key measures
Ecosystem service provision, nitrogen cycling, soil microbial community composition, fertiliser requirement, crop yield, soil health indicators
Outcomes reported
The study evaluated how maize–alfalfa intercropping systems affect multiple ecosystem services and their reliance on synthetic fertiliser inputs. The research measured changes in soil properties, nutrient cycling, and ecosystem function under intercropped versus monoculture management.
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