sweet corn diseases

Sweet corn is grown in Indiana both in relatively large acreages for wholesale and in small acreages for retail. Insect pests seem to be the most common complaint.

Common rust

Common rust-there are several different kinds of rusts that affect sweet corn. In most years, there is little affect on yields. 
Figure 1. Common rust of sweet corn. Figure 1. Common rust of sweet corn.

Northern corn leaf blight

Northern corn leaf blight-not a common or important disease on sweet corn in Indiana.
Figure 1. Northern corn leaf blight of sweet corn. Figure 1. Northern corn leaf blight of sweet corn.
Figure 2. Northern corn leaf blight of sweet corn. Figure 2. Northern corn leaf blight of sweet corn.

Smut

Figure 1. Smut of sweet corn. Figure 1. Smut of sweet corn.
Figure 2. Smut of sweet corn. Figure 2. Smut of sweet corn.
Figure 3. Corn smut. Figure 3. Corn smut.

Stewart's wilt

Stewart’s wilt-less important as hybrids with resistance have become more common. 
Figure 1. Stewart’s wilt of sweet corn. Note lesions streaked through leaves. Figure 1. Stewart’s wilt of sweet corn. Note lesions streaked through leaves.
Figure 2. Stewart’s wilt of sweet corn. Diseased plant is stunted on right. Figure 2. Stewart’s wilt of sweet corn. Diseased plant is stunted on right.
3. Stewart’s wilt of sweet corn. 3. Stewart’s wilt of sweet corn.
4. Stewart's wilt of sweet corn. 4. Stewart's wilt of sweet corn.
5. Stewart's wilt of sweet corn. 5. Stewart's wilt of sweet corn.