Impact of Soil Insecticide Usage on Corn Production In Indiana: 1972–1974

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Abstract:

The level of insect pest populations was determined in 234 Indiana cornfields (1972–74) which had not been treated with soil insecticides. Corn rootworm, Diabrotica spp., larvae were present in 34% of the test fields but caused economic loss in 3.4% of all fields. Yields averaged 174 liters/ha (2 bu/acre) higher and plant populations 988 plants/ha (400 plants/acre) lower in insecticide treated than in untreated portion of test fields. Comparison of data with a similar Illinos study (1953/1963 showed percentage of fields with stand-reducing insects declined from 79% in Illinois to 44% in Indiana.

Document Type: Research Article

Publication date: February 1, 1978

More about this publication?
  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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