Effect of Soil pH on Survival of Japanese Beetle and European Chafer Larvae
Authors: Vittum, P.J.; Tashiro, H.
Source: Journal of Economic Entomology, Volume 73, Number 4, August 1980 , pp. 577-579(3)
Publisher: Entomological Society of America
Abstract:Hatching and survival of Ist and 2nd instars of the Japanese beetle (JB), Popillia japonica Newman, and European chafer (EC), Rhizotrogus majalis (Razoumowsky), was determined in the laboratory in soil at pH levels of 4.6,5.9,6.7, and 7.6 at 20°; 25°; and 30°C. Optimum temperature for JB larvae was 25°–30°C. There was no significant difference in survival at any pH except the slightly diminished survival at pH 5.9 at the 95% 2nd instar period. Optimum temperature for EC larvae was 25°C. There was no significant difference in survival at any pH at the 95% 1st instar period and a significantly lower survival at pH 4.6 and 5.9 at the 95% 2nd-instar period. Optimum pH for both species appears to be between 6 and 7, but there is no appreciable reduction in population at pH extremes in normal summer temperature conditions. Since most turfgrasses grow best at soil pH range of 5.5 to 7.0, with severe restrictions in growth and development outside this range, manipulation of soil pHs of turfgrasses does not appear to be a practical method of reducing JB or EC grub populations.
Document Type: Research Article
Publication date: August 1, 1980
- 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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