Fungicide resistance and race test for Phytopththora
The Phytophthora fungi undergo changes when production practices are used against them for a long time. These changes can sometimes make current control measures ineffective. Recently, there are two types of changes to be aware of in Phytophthora: 1) effectiveness of fungicide treatments, and 2) race shift, which often is followed by producers asking, What new races occur in my soybean fields? This article addresses these issues.