Kentucky Integrated Pest Management
Annual Summary 1989
Five counties participated in formal county-based Integrated Pest Management
(IPM) programs in 1989. These programs included 322 fields with a total
of 11,494 acres. There undoubtedly were also farmers who scouted their
own fields based on IPM training they received in the past, but no data
exists to document the number of acres involved in IPM in this fashion.
Approximately 70% of the acreage enrolled in county-based IPM programs
was planted in corn. Wheat accounted for 17% of the acreage followed by
soybeans with 10%. Alfalfa (2%) and barley (0.4%) 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.
There were no diseases that were "common" in 1989 using this definition
Alfalfa weevil and Potato leafhopper
were widespread in alfalfa. Only Alfalfa weevil showed significant numbers
of fields over the reporting values for these pests.
A number of weeds were reported as common in the crops surveyed; many
weed pests were over their reporting values in the majority of fields
affected. These included Wild garlic,
Henbit, and Chickweed in barley and
wheat; Trumpetcreeper in corn; and Cocklebur
and Morningglory in soybeans.
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 1989 included Sclerotinia crown and stem rot, Leaf
spots, Alfalfa weevil, Potato leafhopper, and Dock.
There were no diseases or insects of concern reported for the two barley
fields surveyed in 1989. Weeds of concern included Wild garlic,
Chickweed, and Henbit.
No diseases of particular concern were found in corn in 1989 although
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 1989. Soybean cyst nematode was the only soybean disease noted;
insect pests included Bean leaf beetle and Soybean
podworm (aka Corn earworm). Weeds present were
Johnsongrass, Cocklebur, and Giant ragweed.
Powdery mildew was the only disease of concern
reported in wheat. Insects of particular concern in wheat that were reported
included Aphids, Armyworm, and
Cereal leaf beetle. Weed species of concern in wheat reported
for 1989 included: Wild garlic, Chickweed,
Original document: 5 December 1996
Last updated: 5 December 1996
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