Natural Pesticide And The Corn Rootworm Beetles

The number one cause of corn infestation in the US corn belt is the corn rootworm beetle. Three species of corn rootworms thrive in Kentucky. These are the northern, western and southern corn rootworms and they all harm corn by chewing on the roots of the young plant. Their main differences lie in their physical characteristics and their life cycles. Adult rootworms look like small green beetles and are inch in size. The most common rootworm is the western corn rootworm and is characterized by the three black stripes on its pale green body. The southern corn rootworm or the spotted cucumber beetle is recognized by the 11 black spots on its green wing covers. The least common species among the three is the northern corn rootworm which lacks any type of markings on its wing covers.

This particular type of rootworm is the most usual species attacking corn in Kentucky and could be identified by the three distinct black stripes on its light green shape. This kind of rootworm (often known as the spotted cucumber beetle) is more prevalent than the western, but is primarily an occasional pest of corn. The southern corn rootworm is acknowledged by the eleven visible black spots on the green wing that covers their bodies. The least popular of the species in Kentucky is the northern corn rootworm that is certainly lacking in any black marks on the wing covers. That which is standard with all of the corn rootworms in Kentucky is always that their offspring hatch in late spring and the larvae are harmful to the roots of the corn.

Usually it has been the western corn rootworm that has made most of the financial problems to corn in Kentucky. Primarily an awfully lightweight percentage of destruction has been attached with the northern or southern rootworms. Since the western corn rootworm is mainly an infestation of continuous corn in Kentucky, the more effective and economically application to control their population is the crop rotation. Past experiences shows us that in a lot of conditions it may just take 2 to 4 years of continuous corn in an area to create an economic population of westerns. Threat of rootworm destruction by trying to keep a field in corn for 2 consecutive years is really small. Nevertheless, with far more years that the industry is retained in continuous corn the rootworm risk slowly grows. The northern corn rootworm is furthermore controlled properly in Kentucky with the rotation of crops.

For that reason, in Kentucky the northern and western corn rootworms are just challenging in steady corn. The southern corn rootworm overwinters as a mature and will lay down its eggs in the early spring. The southern corn rootworm has an extremely wide host collection and will lay down its eggs all around the bases on a number of plant species, it frequently doesn't focus on only corn. The deterioration undertaken by the larvae to corn roots is often considerable. Corn plants produce roots on progressive rings, the corn rootworm larvae can damage several or more full rings of roots during June if communities are severe.

Take notice, insecticide tips in this article are signed up for use in Kentucky, USA only! The use of several merchandise may not be permitted in your state or country. You should investigate with your local county agent or regulatory officer prior to making use of any pesticide talked about in this article.

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