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Chemical control is widely successful, and includes the use of applying mineral oil inside the tip of each corn ear, which suffocates the young larvae. [8] [21] Pesticides are one method by which corn earworm populations are controlled; however, since they have been widely used, the insects have become resistant to many pesticides. [4]
The Western corn rootworm, Diabrotica virgifera virgifera, is one of the most devastating corn rootworm species in North America, especially in the midwestern corn-growing areas such as Iowa. A related species, the Northern corn rootworm, D. barberi , co-inhabits in much of the range and is fairly similar in biology.
The European corn borer (Ostrinia nubilalis), also known as the European corn worm or European high-flyer, is a moth of the family Crambidae. It is a pest of grain, particularly maize ( Zea mays ). The insect is native to Europe, originally infesting varieties of millet , including broom corn .
Diabrotica undecimpunctata, the spotted cucumber beetle or southern corn rootworm, is a species of cucumber beetle that is native to North America. The species can be a major agricultural pest insect in North America. Spotted cucumber beetles cause damage to crops in the larval and adult stages of their life cycle.
That’s an old but effective way of keeping the worms from devouring the ends of the ears. (Curiously, corn earworms are the very same pest as the tomato fruitworm and the cotton bollworm.)
It is known as the cotton bollworm, corn earworm, Old World (African) bollworm, or scarce bordered straw (the lattermost in the UK, where it is a migrant). [2] [1] The larvae feed on a wide range of plants, including many important cultivated crops. It is a major pest in cotton and one of the most polyphagous and cosmopolitan pest species.
The USDA has documented an increase in corn production when genetically engineered corn, resistant to corn borers, was grown in place of non-genetically engineered corn. [11] Under biological control practices, a variety of methods can be used against the borer at one time. This would include the introduction of predators or parasites. [12]
According to Gamble, you can tell whether corn has worms by looking at the silks sticking out of the husks. If they are very short towards the tip of the cob, there is a good chance worms are in ...
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