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Kentucky Integrated Pest Management
Annual Summary 1993


Eight counties participated in formal county-based Integrated Pest Management (IPM) programs in 1993. These programs included 246 fields with a total of 10,973 acres. Independent scouting consultants, informal and trial county programs, and farmer-scouts encompassed an additional 124,027 acres. All together,more than 135,000 acres were involved in some phase of integrated pest management during 1993.

Approximately 70% of the acreage enrolled in county-based IPM programs was planted in corn. Soybeans accounted for 21% of the acreage followed by wheat with 8%. Alfalfa (2%) and tobacco (0.5%) were relatively small components of the total picture.

The most common disease, insect, and weed pests were arbitrarily identified as those affecting 50% or more of the fields planted in a given crop. Leaf spots in alfalfa, and Septoria leaf blotch and Head scab in wheat, were the most common diseases for 1993.

Alfalfa weevil and Potato leafhopper were widespread in alfalfa. Both of these pests showed significant numbers of fields over the reporting values for these pests. Grasshopper, Southern corn rootworm beetle, European corn borer, Armyworm, and Western corn rootworm beetle were most common in corn. Almost all the fields reporting these insects were below their reporting values. Green cloverworm, Grasshopper, and Bean leaf beetle were common insect pests of soybeans in 1993. Tobacco fields reported Tobacco hornworm, Tobacco budworm, Grasshopper, and Aphids as the most common insects. No wheat fields reporting Cereal leaf beetle in 1993 were over the reporting value.

A number of weeds were reported as common in the crops surveyed; few weed pests were over their reporting values in the fields affected. These included Chickweed, Dandelion, and Cocklebur in alfalfa, Common milkweed, Fall panicum, Giant foxtail, Honeyvine milkweed, Horsenettle, Morningglory, Pigweeds, Prickly sida, Trumpetcreeper, Wild sweet potato, and Yellow nutsedge in corn, Common milkweed, Fall panicum, Giant Foxtail, Giant ragweed, Honeyvine milkweed, Horsenettle, Johnsongrass, Morningglory, Trumpetcreeper, Wild sweet potato, and Yellow nutsedge in soybeans, and Chickweed, Henbit, and Wild garlic in wheat.

Extension specialists were asked to provide lists of pests of particular concern for each crop in the IPM program. Pests in this category found in alfalfa in 1993 included Leaf spots, Alfalfa weevil, Potato leafhopper, Chickweed, Dock, Crabgrass, Mustards, and Thistle. The only disease of particular concern found in corn in 1993 was Stewart's wilt. A number of insect pests were reported, including European corn borer, Black cutworm, Fall Armyworm, Armyworm, and the three corn rootworm beetle species (Northern, Southern, and Western). Weeds of particular concern in corn included Johnsongrass, Shattercane, Honeyvine milkweed, Giant ragweed, and Cocklebur in 1993. Soybean cyst nematode and Sudden death syndrome were reported in soybeans. Insect pests included Bean leaf beetle, Grasshopper, and Green cloverworm. Weeds present were Johnsongrass, Cocklebur, Black nightshade, Giant ragweed, and Velvetleaf. Tobacco blue mold was the only disease reported in tobacco. Tobacco hornworm, Aphids, Tobacco budworm, and Flea beetle were reported in a large number of the tobacco fields surveyed. Yellow nutsedge, Johnsongrass, Morningglory, Lambsquarters, and Pigweeds were found in tobacco fields. Septoria leaf blotch was the only disease of concern reported in wheat. Aphids and Cereal leaf beetle were the insects of particular concern reported. Weed species of concern in wheat reported for 1993 included Wild garlic, Chickweed, Henbit, and Mustards.

Kentucky IPM

Original document: 5 December 1996
Last updated: 5 December 1996

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