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Showing 1 to 5 of 5 for “"Action Thresholds"”.
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Egg mass sampling plans for gypsy moth management programs
… Three sampling plans were developed for the action thresholds of 618, 1,236, and 2,471 egg masses/ha. The use of binomial sampling for low density (<618 egg masses/ha) gypsy moth populations in continuously forested habitats was examined. Fixed- and variable-radius plot egg mass samples were …
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Using Pheromone Lures, Insecticide Netting, and a Novel Food-Grade Repellent to Develop BMSB IPM Strategies
… lure was also utilized in a sticky trap-based action threshold for insecticide application decisions. The trap and lure predicted densities of bugs on pepper plants and the use of an action threshold of 5 bugs per trap per week to trigger an insecticide spray reduced insecticide applications by …
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Thresholds and Critical Growth Stages for Brown Stink Bug, Euschistus servus (Say), Management in Field Corn, Zea mays
The brown stink bug, Euchistus servus (Say), is a polyphagous pest of multiple cultivated hosts in Virginia. It recently emerged as a potentially devastating pest of maize, Zea mays L. (Poaceae), in eastern Virginia where small grain (e.g., wheat, rye) production is common. In order to develop an …
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Quantification of tobacco aphid, Myzus nicotianae Blackman, injury to flue-cured tobacco, Nicotiana tabacum (L.)
… tobacco aphid management using eight different action thresholds. Comparison of the two most commonly recommended treatment thresholds (10 and 20% of plants with 50 or more aphids per leaf) revealed no significant differences in the number of remedial treatments required or the yield and gross …
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Optimizing Trichogramma ostriniae (Hymenoptera: Trichogrammatidae) releases to control European corn borer, Ostrinia nubilalis (Lepidoptera: Crambidae) in bell pepper
… only if lepidopteran pests exceeded action thresholds; and 3) an untreated control. No significant treatment effect was found in either year on cumulative number of marketable fruit or percentage of fruit damaged by lepidopteran pests. A significant treatment effect was found on peak …