Photos of the disease stages

Soybean rust, especially in early stages, can be difficult to identify. Examine both upper and lower leaf surfaces, starting with leaves in the lower canopy of the plants.

Figure 2
Early stage of development of soybean rust: upper and lower leaf surfaces and canopy.

Figure 3
Middle stage of development of soybean rust: upper and lower leaf surfaces and canopy.

Figure 4
Late stage of development of soybean rust: upper and lower leaf surfaces and canopy.