Do not handle healthy plants after infected one. Destroy infected plants and keep weeds and grasses down that host aphids beetles. Mosaic virus and maize dwarf mosaic virus has no cure. Leaves are mottled and streaked yellow and green leaves yellow and die along the margins growth is slowed or stunted. Place 2 to 3 inches of organic mulch on the planting bed to conserve moisture. When the soil dries to a depth of 4 inches, water again. Water corn deeply, up to 2 or 3 hours at a time. Corn makes rapid growth after ears form and begin to mature this requires consistent moisture. Remove and destroy all infested stalks at the end of the season. Larvae feed on corn whorls and then bore into stalks. Holes in leaves near whorls.Įuropean corn borer larvae are light brown to pinkish caterpillars with dark brown heads and dark spots on the body the adult moth is light brown with a ¾-inch wingspan. Plant early corn varieties to avoid armyworms. Loss of a small amount of leaf tissue will not reduce yields. Handpick insects and destroy or place them in soapy water. Large holes in leaves.Īrmyworms, corn earworms, various beetles, and grasshoppers eat corn leaves and foliage. Pick off beetles cultivate the garden to disturb the insect life cycle. The corn flea beetle can riddle leaves with small holes and transmit Stewart’s wilt, a bacterial disease that leaves the plant’s vascular system clogged with slime infected plants wilt, become stunted, and die. Corn plants Leaf problems Tiny shot holes in the leaves. lacewing flies, ladybugs, and praying mantis. Cover seedlings with bird block or row covers until they are established. Seedlings are uprooted.Ĭrows and birds will pull up seedlings to feed on the seed. Place a 3-inch cardboard collar around the stems of seedlings and push the collars 1 inch into the soil. Remove weeds and keep the garden free of plant debris. Handpick grubs from the soil at the base of plants. Seedlings are cut off near the soil surface.Ĭutworms are gray or brown grubs that hide in the soil by day and feed at night. Pick and destroy wireworms and maggots from the potato. To trap: use pieces of potato on a spike setting them 2 to 4 inches into the soil check the traps twice a week. Spade the corn bed and let it lie fallow every third season. Cultivate the planting bed in the fall to expose larvae to birds. The maggot feeds on the inside of the sprouting seed. The seed corn maggot is a yellowish-white legless maggot, the larvae of a fly. Wireworms are brown or yellow and leathery to 1½ inches long. The corn wireworm is the larvae of the click beetle the click beetle is reddish brown or black to ¾ inches long. Insides of seed and young plants are eaten.Ĭorn wireworm or the seed corn maggot is eating the seed. Plant later when the soil and temperatures are warmer make sure the soil is well-draining by adding aged compost and organic matter to the soil. Kernels are pink and moldy brown lesions on stalks near joints stalks are rotten inside.Ĭorn problems and solutions Seed and seedling problems Seeds do not germinate seedlings do not emerge.Popped kernels, kernels look like popcorn.Worms eat down through kernels ears look brown and eaten.Incomplete kernel development ears partially filled with ripe kernels shriveled kernels.Ears are only partly filled, silks are chewed short or clipped off.Gray-white gnarled growths or galls on ears and leaves.Stalks and leaves are deformed, bent over, or may fail to unfurl plants are stunted.Reddish-brown blisters on the top of leaves and stalks leaves may turn yellow.Leaves have purple margins starting with leaves at the bottom of the plant the plant may be stunted. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |