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overwintering eggs

Listing 1 - 10 from 60 for overwintering eggs

Worms, Webs and Wriggles
... and are usually present in small numbers every year. The eggs (which are laid the previous summer and overwinter on twigs and ... A dormant oil application before the leaf buds burst destroys the overwintering eggs. Use according to label directions. Do not use on maples. ... populations build up. They are called "fall cankerworms" because the eggs which produce them are laid by a wingless moth in ...
gardenline.usask.ca

White Apple Leafhopper, HYG-2202-92
... perpendicular to the terminal growth. Overwintering eggs are found on one- to five-year-old wood, but are most often present on two-year-old wood. Overwintering eggs begin to hatch just before apple ... late-August. Adults remain active throughout September but diminish rapidly in number by October. The overwintering eggs are laid under apple tree bark from mid-August to mid-October. Contrast with ...
ohioline.osu.edu

Green Apple Aphids, HYG-2206-94
... . The eggs are shiny-black and look identical to those of rosy apple aphid and apple grain aphid. Overwintering eggs of green apple aphid are found at the base of buds and leaf scars on terminal shoots and water sprouts. Most eggs ... as females, which mate and produce offspring that then lay overwintering eggs. Natural Control Aphid populations are affected by weather, the ...
ohioline.osu.edu
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FPHG -
... Overwintering eggs are laid in groups on roughened bark, in crevices and cracks, and around bud scales on twigs and branches. Eggs ... the dormant period up to prepink, overwintering mite eggs can be evaluated with a hand lens. Pay particular attention to the bases of twigs and spurs. Look for clusters of tiny (less than 1/50 inch), red spheres. If overwintering eggs ...
ssfruit.cas.psu.edu

FPHG -
... that smuts both the fruit and leaves and causes considerable discoloration, especially of early apples. Eggs are small, shiny, and black. Most are laid on bark or on buds in the ... apple aphid has a longer antenna than the green aphids. Since the overwintering eggs are indistinguishable from rosy apple aphid eggs, early season scouting and management for both species are identical. Since these ...
ssfruit.cas.psu.edu
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Tree Fruit Insect Pest Photographs
... , adult male, nymphs and summer eggs Overwintering eggs Injured versus uninjured leaves Twospotted Spider Mite (Get the facts on biology, monitoring, and management - Va. Tech.) Adult female and eggs Overwintering adult females in apple calyx ...
www.caf.wvu.edu

Rosy Apple Aphid
... winged males from the summer hosts. Mated females deposit an average of four to six overwintering eggs, usually in late October and November. V. Injury: RAA remove plant juices from the ... be examined during the dormant period for overwintering eggs, however, no method exists for distinguishing RAA eggs from those of the other four species of aphids overwintering on apple, or for predicting aphid ...
www.caf.wvu.edu
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European Red Mite
... Initial populations: The number of mites hatching from the overwintering eggs constitutes the initial population. The number of overwintering eggs is influenced by favorable or unfavorable factors of the previous season ... hypothetical figure and never is met in nature. Abundance of overwintering eggs. The extent of carryover of winter eggs is directly related to the weather of the previous season. ...
www.canr.msu.edu

White Apple Leafhopper
... or early September. These adults lay the overwintering eggs in the bark of the apple twigs. ... eggs are white, elongated and cylindrical. One end is slightly tapered. Dimensions are 0.8 by 0.3 mm. The first-generation or overwintering eggs are laid beneath the bark of the apple twigs in the cortex. They are laid singly and look like small blisters on the twig. Second-generation eggs ...
www.canr.msu.edu
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Daylily Dictionary: Aphids
... of cold weather in Fall, males may be produced, mating occurs and the females lay overwintering eggs. In warm climates and in greenhouses, some species may omit the egg-laying stage and ...
www.daylilies.org




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