Investigating the control of potato Verticillium wilt by Basamid granulate in vitro and greenhouse conditions

Verticillium wilt disease of potato is soil-borne pathogen that causes problems in potato plant all over the world and is difficult to control. In this research, the effect of Basamid granulate (Dazomet 98%) at different concentrations (266, 333, 400 gr/m3) was tested in vitro and greenhouse conditions for their ability in order to control Verticillium wilt of potato. The results showed that application of basamid granulate at the rate of 400 gr/m3 caused complete death of colony and microsclerotia of pathogen in vitro and greenhouse conditions. Similar to untreated control, disease severity and vascular discoloration in this treatment were reduced to zero. All treatments showed significant differences at 1% according to Duncan’s test. Therefore, results indicated that not only is soil fumigation by basamid granulate cheaper, easier and safe, but also it is an acceptable alternative for other fungicides in control Verticillium wilt of potato.