High-volume Applications of Azinphosmethyl, Fenvalerate, Permethrin, and Phosmet for Control of Coneworms (Lepidoptera: Pyralidae) and Seed Bugs (Hemiptera: Coreidae and Pentatomidae) in Southern Pine Seed Orchards

Nord, John C.; DeBarr, Gary L.; Overgaard, N. A.; Neel, W. W.; Cameron, Ron; Godbee, John F.

doi:10.1093/jee/77.6.1589

Cited by 9 publications

(2 citation statements)

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“…Experiments were conducted in 1985 at the US Forest Service's Francis Marion Seed Orchard (Berkeley County,South Carolina,32O58'N,79'56'W) and at a Champion International seed orchard (Newberry County, South Carolina, 34' 16T\T, 81°46'W), and from 1984 to 1986 at Weyerhaeuser Company's seed orchard (Greene County,Alabama,32"55'N,88'05'W). Individual loblolly pine trees (10-15 m height) were sprayed with 19-30 L of 0.05% ai (wtlwt) of fenvalerate (pydrinB 2.4 EC formulation) until the foliage was visibly wet using a hydraulic sprayer (Nord et al 1984).…”

Section: Methodsmentioning

confidence: 99%

“…Improved timing of insecticide applications can reduce the amount and frequency of insecticide use. Impediments to better timing include the presence of multiple pests and their immigration from natural pine forests or plantations near seed orchards (Cameron 1984). Spray timing based upon degree-day accumulations have been used to time insecticide applications for the Nantucket pine tip moth, Rhyucionia ,frustrunu (Comstock) (Lepidoptera: Tortricidae), a pest of young pine plantations (Garguillo et ul.…”

Section: Introductionmentioning

confidence: 99%

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Degree-day model for timing insecticide applications to controlDioryctria amatella(Lepidoptera: Pyralidae) in loblolly pine seed orchards

et al. 2002

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Because Dioryctria amatella (Hulst) is a key pest in loblolly pine, Pinus taeda L. (Pinaceae), seed orchards in the southeastern United States, improved timing of insecticide applications would be valuable for its control. To time two fenvalerate (Pydrin® 2.4 EC) applications we tested four variations of a degree-day model that was developed to predicted when various proportions of D. amatella eggs would hatch during the spring generation. We compared reductions in Dioryctria spp. cone damage to unsprayed checks and a standard operational spray regime of four monthly applications of fenvalerate. In addition, we examined seeds from healthy cones to determine if sprays to control D. amatella also reduced seed damage caused by Leptoglossus corculus Say (Heteroptera: Coreidae) and Tetyra bipunctata (Herrich-Schäffer) (Heteroptera: Scutelleridae). Trials were conducted from 1984 to 1986 in two orchards in South Carolina and one in Alabama. Degree-day accumulations (threshold = 11 °C) were begun on the day when the cumulative number of male D. amatella equaled or exceeded five captured in 15 Pherocon 1C® traps baited with 100 μg of Z-11-hexadecenyl acetate. One application per year was insufficient to control D. amatella or reduced seed-bug damage. Two sprays based on D. amatella phenology significantly reduced coneworm and seed bug damage, and were as effective as four sprays applied monthly. None of the treatments reduce spring cone losses, which are primarily caused by Dioryctria merkeli Mutuura and Monroe. Several variations of the model performed well, but we suggest that the best, based on efficacy and ease of use, was when sprays were applied immediately after five males were caught (degree-day = 0) and again when the model predicted 50% of the spring generation eggs had hatched.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Degree-day model for timing insecticide applications to controlDioryctria amatella(Lepidoptera: Pyralidae) in loblolly pine seed orchards

et al. 2002

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Protection of pine seed orchards in the Southeastern United States

Bramlett

1987

Forest Ecology and Management

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A Southwide Rate Test of Azinphosmethyl (Guthion®) for Cone and Seed Insect Control in Loblolly Pine Seed Orchards

Mangini

Barber²,

Cameron³

et al. 1998

Southern Journal of Applied Forestry

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A southwide efficacy test of reduced rates of azinphosmethyl (Guthion®) for control of seed and cone insects in loblolly pine seed orchards was conducted in 1992. In each of nine loblolly pine (Pinus taeda L.) seed orchards, an untreated (no protection) check and two of five possible rates of Guthion® (1.0, 1.5, 2.0, 2.5, or 3.0 lb ai/ac/application) were randomly assigned to three test plots. Insecticide treatments improved first-year conelet survival, second-year cone survival, sound seeds per cone, and sound seeds per conelet at nearly every rate. There was no trend of better protection with increasing rates of Guthion®. The 1.0 lb ai/ac rate was as efficacious as the EPA-registered maximum aerial rate of 3.0 lb ai/ac. Based on these results, orchard managers should consider reduced rates of Guthion® for operational cone and seed insect control programs. South. J. Appl. For. 22(2):106-110.

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High-volume Applications of Azinphosmethyl, Fenvalerate, Permethrin, and Phosmet for Control of Coneworms (Lepidoptera: Pyralidae) and Seed Bugs (Hemiptera: Coreidae and Pentatomidae) in Southern Pine Seed Orchards

Cited by 9 publications

References 0 publications

Degree-day model for timing insecticide applications to controlDioryctria amatella(Lepidoptera: Pyralidae) in loblolly pine seed orchards

Degree-day model for timing insecticide applications to controlDioryctria amatella(Lepidoptera: Pyralidae) in loblolly pine seed orchards

Protection of pine seed orchards in the Southeastern United States

A Southwide Rate Test of Azinphosmethyl (Guthion®) for Cone and Seed Insect Control in Loblolly Pine Seed Orchards

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