بررسی تاثیر علف کشهای ارادیکان و آپیروس در کنترل علف های هرز مزارع سیب زمینی

Due to the problem of weeds in potato fields and the limited number of registered herbicides in the country and the dominance of summer weeds in most farms, this project was carried out in a randomized complete block design with 8 treatments and 3 replications in two provinces of Ardabil and Hamadan during 2 years.Treatments were included Metribuzin (Sencor) (750 g.ha-1), Metribuzin (750 g.ha-1 ) + Rimsulfuron (Rima) (75 g.ha-1) , Pendimetalin (Prol) (3 L.ha-1 ), Sulfosulfurone (Apyrus 30 g.ha-1), Eradicane (EPTC) (3 L.ha-1), Eradicane ( 4 L.ha-1 ), Eradicane (5 L.ha-1) and weed free treatment (check treatment). At the time of testing project all the plots were divided in two equal parts. The end of each plot of herbicide application and its upper part was considered as a check. Weed sampling was done before potato earting up and 30 days after earthing up. The efficiency of treatments was expressed as percentage reduction of weed density and dry weight and yield increase compared to control of each treatment. The results in Ardebil and Hamadan showed that Metribuzin herbicide respectively with 85% and 79% reduction in weed dry weight and 41% and 38% increase in yield in compared with control were the best treatment in terms of annual weed control in potato fields. Apyrus and EPTC (5 L.ha-1) in terms of weeds control in the two areas were the next statistical group.