Competition between autumn and spring planted grain intercrops of wheat (Triticum aestivum) and field bean (Vicia faba)

Summary

This field trial examined how the competitive balance between wheat and field bean changes depending on planting season (autumn versus spring), with implications for intercrop design and productivity. The research addresses whether autumn-sown systems—which establish winter-hardy wheat earlier—alter intercrop resource capture differently than spring-sown systems. Findings would inform choice of planting date to optimise yield and nitrogen cycling in grain–legume intercrops.

Regional applicability

Directly applicable to United Kingdom arable farming, where both autumn and spring planting windows are standard practice. The wheat–bean intercrop system is relevant to UK soil health and nitrogen fixation goals in regenerative and organic systems.

Key measures

Likely grain yield (wheat), pulse yield (field bean), land equivalent ratio (LER), total biomass, and/or aboveground dry matter by season and planting date

Outcomes reported

The study compared competitive interactions and yield performance between autumn- and spring-planted intercrop systems of wheat and field bean. Outcomes likely included grain and pulse yields, land equivalent ratio, and resource use efficiency between planting seasons.

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