بررسي كارايي شعله افكن در مقايسه با روشهاي متداول مبارزه با علفهاي هرز در مزارع كشت مستقيم پياز

Investigating efficacy of flaming compared to common methods of weed control in seeded onion fields

Efficacy of flaming was compared to common methods of weed control in onion fields during the years of 1999 and 2000, in E.Azarbijan. The experiments were conducted in the framework of Radomised Complete Block Design with 10 treatments and 4 replications. The treatments included ioxynl (as Totril 22.5%) + sethoxydim (as Nabu-S 12.5%)at 3+3 1/ha postemergence with and without one hand weeding; chlorthal dimethyl (as Dacthal 75%) at 12kg /ha preemergence with and without one hand weeding; paraquat (20%) at 3 l/ha, postemergence of weeds when onions were at 5cm stage, with and without hand weeding; flaming at the pace of 0.25 m/second, postemergence of weeds and when onions were 5cm high; weedy and weed free checks. Results showed that all treatments plus one hand weeding controlled weeds effectively and boosted yields. It is, therefore, concluded that flaming can replace herbicides in onion fields.