Biocontrol main enemy '- Introducing the Worm Corn Beetles

Across the U.S. Corn Belt, the primary group of the insects are corn rootworm beetles. There are basically three types of root maggots in the state of Kentucky, the northern, western and southern corn root worm. Although the ear of corn damage in an identical manner to gnaw at the roots of the plant growth, have many differences including their biology and operations.

Adults of all three species is a small green beetle is almost one quarter of an inch insize. The corn rootworm is the most common types of attacks corn in Kentucky and may be recognized by this particular black stripes on his body green. This type of (commonly known as the spotted cucumber beetle) is more common west, but is mainly an intermittent pest of corn. This worm is identified by the root of the 11 points visible on the green belt black, covering their bodies. The lesser-known species in the state of Kentuckynorthern corn rootworm, which has no signs of any blacks on the wing covers.

What is the biology of this species root worms? What is typical of each of these pests in Kentucky is always that their eggs in late spring and the larvae are harmful to the roots of maize. Usually most of the problems revealed during the month of June. What exactly can vary from one species where eggs are produced. In western and northern species the eggs arethe soil at the base of corn plants by the summer. This species has a very narrow range of accommodation, the corn and the parties on a number of other grasses. The eggs overwinter to hatch the following May. The small larvae can be a very short length only to find roots in solid ground and begin their development. For this reason, northern Kentucky and western corn root worm are hard only constant in maize. On the other hand, the southern corn rootworm continue to live inwinter as adults and lay their eggs in the planting season. This particular worm has a surprisingly large collection of host and determine its eggs around the bases a lot of plants, usually does not focus only on corn.

One might ask, what are the most common problems caused by this particular worm root. The deterioration of the larvae to the roots of corn is usually high. The roots of maize plants to create the current loop, the larvae of corn rootworm may be chargedthree or more completions of the roots in June where people are serious. maize plants that have been very affected by the corn rootworm fall usually moderate and may try to continue to bend upward.

This is a function of worm damage to roots and is called "goose-necking" of corn. Destroyed roots usually grow a proliferation of secondary roots and may show signs of drought stress, even during the period of sufficient soil moisture. The problems caused bylarvae on the roots of corn can be extended. corn plants produce roots accelerating rings, corn rootworm larvae to delete three or more complete rings of the roots during the months of June, when people are extreme.

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