Chemical Control of the Sunflower Moth on Sunflowers1

Authors: TEETFS, GEORGE L.; RANDOLPH, N. M.

Source: Journal of Economic Entomology, Volume 61, Number 5, October 1968 , pp. 1344-1347(4)

Publisher: Entomological Society of America

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Abstract:

Tests were conducted to determine the effectiveness of 9 insecticides for control of Homoeosoma electellum (Hulst). Tests at College Station, Texas, showed that 2 applications of methyl parathion, endosulfan, diazinon, and malathion reduced the number of larvae and increased yields. Tests at McGregor, Texas, showed that only endosulfan and carbaryl reduced the larval infestation following1 application; however, they did not increase yields. Two applications of GS-13005, (O,O-dimethyl phosphorodithioate Sester with 4- (mercaptomethyl) -2-methoxy-Δ2-1,3,4-thiadiazolin- 5-one) , azinphosmethyl, methyl parathion, carbaryl, azinphosmethyl ultra-low-volume (ULV) and methyl parathion ULV increased yields. Plots treated 3 times, except those treated with malathion ULV, had lower infestations than the check plots and yields were increased except when treated with trichlorfon.

Yields were significantly increased when methyl parathion, endosulfan, or carbaryl were applied at 5.day intervals. Applications at pre-flower, or at 10% flower, in most cases, did not significantly reduce the number of larvae or increase seed yields. Generally, insecticides applied at the 50 and 100% flower stages were most effective.

Document Type: Research Article

Publication date: October 1, 1968

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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