The effect of irradiated chitosan combined with Trichoderma on the root rot pathogen Phytophthora spp. in strawberry

Abstract

Antifungal effects of irradiated chitosan in combination with Trichoderma strain on the root rot disease Phytophthora spp. in strawberry were investigated. The effect of irradiated chitosan on the growth and the root rot control of Phytophthora spp. in strawberry was evaluated in vitro and under greenhouse conditions. The results showed that irradiated chitosan with the molecular weight of 30 kDa strongly inhibited the mycelial growth of Phytophthora spp. The soil treatment by irradiated chitosan in combination with Trichoderma spp.strain completely reduced the root rot disease and promoted the growth of strawberry. The aim of this study was to evaluate the effect of irradiated low-weight chitosan in combination with Trichoderma spp. strain on the growth promotion and control of the root rot disease in strawberry.