An experiment was performed at Tallassee, Alabama, to determine if the application of certain systemic insecticides at the rate of 1 lb per acre applied in various ways had significant effects on the soybean plant other than those related to insect control. Disulfoton, phorate, carbofuran, and methomyl were applied as preplant granules, granules as sidedressing, foliar spray at 1st bloom, foliar spray at midbloom. foliar spray at full bloom, and a combination of all these methods. Stand counts revealed that germination was not affected by application of preplant granules. In a series of 3 plant-height measurements, the measurement made after a foliar spray application at midbloom was the only one to show significant differences among treated plots. Plants were taller in plots treated with methomyl and carbofuran than in plots treated with disulfoton or check plots. Data on height of the 1st pod from the ground, number of mature pods per plant, and yield revealed no significant mean differences. However, differences were detected in seed size (weight) because of methods of application. Plants treated with foliar sprays at 1st bloom, foliar sprays at midbloom, or combination treatments produced larger seeds than plants on other plots
Document Type: Research Article
Publication date: October 15, 1971
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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.