Impact of fungicide seed treatments on Rhizoctonia root rot, take-all, eyespot, and growth of winter wheat

Fungicides were examined for in vitro activity against Rhizoctonia solani AG-8 and R. oryzae and for capacity to suppress the incidence and severity of Rhizoctonia root rot of winter wheat in eastern Oregon. Thirteen seed treatments were evaluated at three sites during 1986-87 and five were evaluated at two sites during 1987-88. A factorial experiment with variables of seed treatment and tillage intensity (conventional plowing vs. no tillage) was also performed at two sites. All seed treatments in the seven experiments were ineffective or unreliable for controlling Rhizoctonia root rot (...)