In vitro Studies on the Effects of Sugar Beet Feids Prevalent Herbicides on the Beneficial and Deletrious Fungal Species

The antifungal activities of five herbicides prevalent in sugar beet fields were investigated qualitatively In vitro in the case of fungal species including Bipolaris sp., Ceratocystis radicicola, Fusarium culmorum, F. graminearum, F. proliferatum, F. oxysporum, Gaeumannomyces graminis, Macrophomina phaseolina, Phytophthora sp., Pythium sp., Rhizoctonia solani, Scierotinia sclerotiorum, Talaromyces flavus, Trichoderma koningii, T. longibrachiatum, T. hamatum, T. harzianum, Trichoderma sp., and Verticillium dahliae. 2,4-D, desmedipham and diclofop-methyl showed the most broad antifungal effects and clodinafop and tralkoxydium had a similar ranges narrower than of other herbicides tested. No oomycetous fungus (Phytophthora and Pythium) was able to grow on the toxic media. This is the first global report on the antifungal effects of the herbicides, diclofop-methyl (Illoxanr registered ) and clodinafop (Topik registered ).