Phytophthora Root & Stem Rot
of Soybean

How Does Disease Develop?

Phytophthora diseases

Populations of Phytophthora sojae

Managing Phytophthora sojae

Managing Phytophthora sojae

Partial Resistance

Partial Resistance to P. sojae

What is a race/pathotype?

Partial Resistance to P. sojae

Partial resistance levels in
Ohio Soybean Performance Trials

Managing Phytophthora sojae

Tiling and Tillage

Effects of tiling and tillage on soybean yields/P. sojae

Managing Phytophthora sojae

Slide 16

Phytophthora Root and Stem Rot
Effects of Seed Treatment

Metalaxyl Seed Treatment

Slide 19

Slide 20

Managing Phytophthora sojae

Best Management Practices for Field Crop Production in NC Region

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