Laboratory and Field Evaluation of Isofenphos for Scarabaeid Grub (Coleoptera: Scarabaeidae) Control in Turfgrass
Authors: Tashiro, H.; Spittler, T. D.; Greco, E.
Source: Journal of Economic Entomology, Volume 75, Number 5, October 1982 , pp. 906-913(8)
Publisher: Entomological Society of America
Abstract:Isofenphos(1-methylethyl 2-[[ethoxy[(1-methylethyl)amino]phosphinothioyl]-oxy]benzoate)was equally effective on cyclodiene-resistant and susceptible 1st-in star European chafer, Rhizolrogus majalis (Razoumowsky). Japanese beetle, Popillia japonica Newman, 1st instars were more susceptible than the European chafer. On 3rd-instar European chafers, initial action of isofenphos was slower than diazinon but eventually surpassed the latter, especially at lower temperatures. Isofenphos at rates of 1.7 to 2.2 kg of AI/ha applied during April and May or midsummer were highly effective in controlling European chafer, Japanese beetle, and Oriental beetle, Anomala orientalis Waterhouse, grubs during late summer and fall. Second-year residues of isofenphos were present in sufficient quantities to produce significant grub mortality in some cases. In the above-ground vegetation, isofenphos residues of the 6E formulation were initially higher than with the 5G formulation, but both were nearly dissipated by 15 weeks. Soil residues in the 0- to 1.3-cm depth were 2.5 to 10 times greater than in the 1.3- to 3.8-cm depth during the first 15 weeks.
Document Type: Research Article
Publication date: October 1982
- 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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