Summary
This field trial examined whether annual crops can adapt over generations to intercropping conditions, moving away from monoculture-optimised phenotypes. Plants grown in the same community type as their parents for two successive generations showed reduced competition and increased facilitation in mixtures, with enhanced overyielding under fertilised conditions. The study provides empirical evidence that parental diversity history influences species complementarity and ecosystem functioning in annual cropping systems, suggesting potential for breeding cultivars specifically adapted to intercropping.
UK applicability
The findings are relevant to UK diversified farming and breeding programmes, though the abstract does not specify the geographic location or whether trials were conducted under UK conditions. Adoption would require validation under British climate and soil conditions and integration with UK crop variety registration systems.
Key measures
Plant–plant interactions (competition vs. facilitation); complementarity indices; total yield; overyielding in mixtures; morphological traits (plant height, leaf dry matter content) across six crop species
Outcomes reported
The study measured shifts in plant–plant interactions, species complementarity, and yield responses in intercropped annual crops when plants were grown in the same community type as their parents for two generations. Changes in morphological traits (plant height and leaf dry matter content) and overyielding under fertilised conditions were also quantified.
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