Corn: Root, stalk, and ear rots categories: Corn Corn Diseases Vegetables last review date: 2025-10-30 12:18 Corn stalk rot causing brown decayed roots Photo by: OSU slide library Biology Several fungi cause rots of roots, stalks, and ears of corn. These fungi may be carried on the seed and may result in poor germination and […]
Corn: Seed rot and seedling blight (damping-off) categories: Corn Corn Diseases Vegetables last review date: 2025-10-31 11:02 Damping-off of cucumber seedlings Photo by: R.S. Byther Biology Several fungi can cause seed rots and seedling blight of corn. These can be carried on the seed or can overwinter in the soil or infected plant debris. Seeds […]
Corn: Smut categories: Corn Corn Diseases Vegetables last review date: 2025-10-31 11:28 Corn head smut Photo by: R.S. Byther Biology Two types of smut occur on corn in the Pacific Northwest. Both are fungal diseases. Common smut may occur on any above-ground portion of the plant, causing gall-like swellings. The galls are initially covered with […]
Corn: Brown marmorated stink bug categories: Corn Corn Insects Vegetables last review date: 2025-10-31 11:45 Brown marmorated stink bugs feeding on corn, damage to kernels Photo by: Gerald Brust, Univ of Maryland Biology The brown marmorated stink bug (BMSB) is an introduced pest species from Asia that is spreading quickly across the United States. Nymphs […]
Corn: Corn aphids categories: Corn Corn Insects Vegetables last review date: 2025-10-30 02:45 Corn aphids on sheath Photo by: Unknown Biology Aphids are small, soft-bodied, pear-shaped insects. They may vary in color from yellow to green to dark. Aphids typically feed in colonies on the leaves, often preferring the newer growth. Infested leaves turn yellow […]
Corn: Corn earworm categories: Corn Corn Insects Vegetables last review date: 2025-10-30 02:43 Corn earworm damage Photo by: A.L. Antonelli Biology The corn earworm is the caterpillar of a light to dark brown moth with a 1 1⁄2″ wingspan. The caterpillars are up to 1 1⁄2″ long at maturity. They vary widely in color, but typically have darker […]
Corn: Cutworms and armyworms categories: Corn Corn Insects Vegetables last review date: 2025-10-30 02:39 Tan armyworm caterpillar Photo by: K. Grey Biology Cutworms and armyworms are the larvae of noctuid moths. These common moths are medium-sized with fairly dull coloration. The greenish, grayish, or tan caterpillars are hairless, nocturnal, and generally spotted, striped, or otherwise marked. […]
Corn: Earwigs categories: Corn Corn Insects Vegetables last review date: 2025-10-30 02:36 Adult European earwig Photo by: M. Bush Biology Earwigs are reddish-brown insects about 3⁄4 inch or less in length. Both males and females have pincers at the rear end. Earwigs are largely beneficial, feeding on many pests such as aphids, mites, and nematodes, […]
Corn: Spider mites categories: Corn Corn Insects Vegetables last review date: 2025-10-30 02:34 Spider mite damage on leaf Photo by: A.L. Antonelli Biology Spider mites are tiny, eight-legged mites which may range in color from yellowish to green or red. They typically feed on the underside of leaves, causing a yellowish to bronze stippling or […]
Corn: Western spotted cucumber beetle categories: Corn Corn Insects Vegetables last review date: 2025-10-30 11:55 Western spotted cucumber beetle Photo by: K. Grey Biology The western spotted cucumber beetle is a pest of many ornamentals and vegetables. About 1⁄4″ long, the adult beetles have yellow wing covers with black spots. The rest of the body […]