Weed suppression capacity of camelina (Camelina sativa) against winter weeds: The example of corn-poppy (Papaver rhoeas)

Crop rotation is one of the most relevant tools for Integrated Weed Management (IWM). In semiarid Mediterranean areas, crop limited by climatic conditions. Camelina (Camelina sativa (L.) Crantz) an interesting option to introduce due its tolerance cold and drought because short life cycle, which allows a flexible management weed control. this study, capacity camelina reduce growth seed rain corn poppy (Papaver rhoeas L.) was studied. The experiment carried out at University Lleida during three seasons (2018–19, 2019–20 2020–21). each season, varieties (GP204, Sonny Joelle) barley were sown on two sowing dates (SD) (between November February) in 1.5 m wide × 10 long plots with replications. Three 0.5 m2 quadrates established, where five P. plants from natural population allowed grow SD. Additionally, every season March, surveys performed observe effect SD flora. Results show that delaying effectively controlled winter weeds, including rhoeas, could not establish second plots. first reduced similarly presence crops 2018–19, but competed better against it 2020–21, while 2019–20. Due cycle earlier harvest date, potential production 34% 52% 2019–20% 70% reduction 23% 2018–19% 56% 2020–21 barley. conditions should be considered as tool IWM.