The Potential of Intercropping for Multifunctional Crop Protection in Oilseed Rape (Brassica napus L.)

Oilseed rape (OSR; Brassica napus ) is a globally important crop which increasingly under pressure from pests, pathogens and weeds. We investigated the potential of achieving multifunctional protection benefits by intercropping oilseed with legumes. A field experiment was conducted in winter intercropped annual frost sensitive legumes berseem clover ( Trifolium alexandrinum or spring faba bean Vicia ), grain peas Pisum sativum ). tracked damage to autumn pests (slugs insects), pathogens, weed biomass, as well intercrop yield each treatment. Intercropping treatments resulted pest that equivalent lower than alone. Follow up lab assessments for legume intercrops provided evidence reduction OSR. Each had its own drawbacks relation pest, pathogen suppression, suggesting plant species selected should be based on weeds greatest concern locally achieve relevant benefits. Our study provides framework further experiments effects can quantified.