Some of the most important corn pests, including black cutworm, fall armyworm and corn earworm, are migratory; others, such as European corn borer, overwinter in the field. For the migratory pests especially, it takes almost perfect timing to make a “successful”
Lannate is a broad-spectrum insecticide that contains the active ingredient methomyl. It acts quickly and is highly effective against a wide range of insects that attack sweet corn, including the aforementioned armyworms, cutworms, earworms, and corn borers, as well as aphids, and leafhoppers.
Ears of corn can be protected from raccoons and squirrels by wrapping the ears with reinforced packing tape. Circle the ear with the tape about 2 inches below the tip. Then wrap the ear to the stalk so the critters can't pull it down. (Do not wrap the tape so tightly that the corn cannot expand properly in the husk.)
Weevils: Weevils, such as maize weevils, rice weevils, and granary weevils, can be the most damaging and hardest to treat insects for your stored corn, as the larvae actually grow from eggs deposited inside kernels leaving a hollowed-out kernel.
The most common foliar diseases of corn in Iowa include anthracnose leaf blight, gray leaf spot, northern leaf blight, common and southern rust, and eyespot.
Of all the ear rots, Gibberella Ear Rot is generally regarded as the most destructive and economically important.
Lesions begin as flecks on leaves that develop into small tan spots. Spots turn into elongated brick-red to cinnamon-brown pustules with jagged appearance. Symptoms of Common Rust are found on both upper AND lower leaf surfaces (unlike Southern rust).
The European corn borer (ECB), Ostrinia nubilalis, is one of the most destructive insect pests of field, seed and sweet corn, and is an increasing concern on peppers, potatoes, hops and other host crops in Canada.
The distinguishing characteristic of oval-shaped, black-and-white minute pirate bugs is that when they land on your bare skin they bite with a pain that is way out of proportion to their minute size (1/5th inch).
There are two major species of billbugs that injure corn, the southern corn billbug and the maize billbug. Billbugs can cause injury from emergence through the V6 to V8 leaf growth stages of corn. Both adults and grubs feed on corn stems and around roots, weakening or killing seedlings.
Corn — Corn is a domesticated plant that can tolerate relatively concentrated magnesium from Epsom salts within its plant tissue. The element is needed for their growth and production of cobs. Tomato — Apply Epsom salts just before tomatoes start to bloom when they need the most critical magnesium concentration.
The best approach is to water the plant thoroughly, allowing the excess water to drain out from the bottom of the pot. It is important to let the top inch or so of soil dry out before watering again. In terms of light requirements, corn plants prefer bright, indirect light.
Several formulations of carbaryl (Sevin) are registered in Kentucky; however, only Sevin XLR PLUS or Sevin 4F are registered to be used for field corn following the manufacturer's label. Seed treatments are recommended for fields that do not receive a soil insecticide at planting time.
Common vegetable garden contact insecticides, such as carbaryl, cyhalothrin, cypermethrin, permethrin, or bifenthrin, will adequately control caterpillars (corn earworms, fall armyworms, and European corn borers) as well as beetles (flea beetles, Japanese beetles, and sap beetles).
Today, vegetable or corn oil is recommended. Even better, add a touch of Bacillus thuringiensis var. kurstaki (Btk) to the oil. Btk is a natural bacterial insecticide that is widely used by organic growers (trade names include Dipel and Thuricide).
Atrazine has become such a major pesticide in the U.S. and across the globe because it is inexpensive, does not damage crops heavily and can be applied during a long window of time.
Which tiny black bug looks like a speck of pepper? If tiny black specs appear in your food products, such as flour or dried oats, they are most likely weevils.
Occasionally a person will feel itching or pin prick sensations and become overly worried that some invisible insect or mite is biting them, when none can be found. This could be the condition known as Ekbom syndrome, delusory parasitosis, or DP for short.
While using green tea is optimal, white tea and chamomile tea can also be used. Place a tea bag in cold water for about 15 minutes and then place it directly on the bug bite for about 10 minutes. The tannins in the tea help to reduce any swelling present and also minimize itching.
In conclusion, termites, bed bugs, and cockroaches are the most challenging pests to eliminate from your home. Their ability to hide, reproduce quickly, and withstand many extermination methods make professional pest control services essential for effective pest management.
Seedcorn beetles
The plant injury is more common when cold, wet weather delays the corn emergence. These beetles will feed on and consume the seed's germ, resulting in “hollowed-out” seed. Injury will usually result in reduced plant stands.
The adult stages of white grubs are scarab beetles. Common names for some of the species include June beetles, chafers, and dung beetles. Only a few species of white grubs' damage turfgrass, and most feed on decaying plant material and animal manure, proving a necessary role in recycling nutrients of these materials.
Corn that is placed into a wet seed furrow can have restricted root growth, resulting in "rootless" corn (also referred to as rootless corn syndrome) among other problems that will become apparent as the season unfolds.
The corn flea beetle is a tiny pinhead-sized [1/16 inch (1.6 mm) in length] black insect with thickened hind legs that enable it to leap considerable distances when disturbed. Flea beetle eggs are deposited on weeds, corn, other cultivated crops, or in the soil near the host plant.
Affected fields have the appearance of a green band across the middle of the plants. Under the sheath on the stalk surface, black discoloration is evident.