6533b7d0fe1ef96bd125b5b1

RESEARCH PRODUCT

Modélisation des effets des systèmes de culture sur la dynamique de l’orobanche rameuse en interaction avec les adventices

subject

description

Branched broomrape, Phelipanche ramosa (L.) Pomel, is a parasitic plant which causes important yield losses in crops, particularly in winter oilseed rape in France. In order to design efficient pest management strategies, we modelled the effects of cropping systems on branched broomrape dynamics in interaction with weeds and crops in a model called PHERASYS. PHERASYS functions and parameters were based on literature and on our own experiments. The model simulates the complete life-cycle of the parasite, from seed dynamics in the soil to seed production after development on the host. Interactions between the parasite and crops and weeds were characterized at the species level and at the plant scale. Based on our first results, we discussed the effects of tillage, delayed sowing and catch crops