Prevention and control the Apple leaf roller |
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Product Description |
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Apple moth, Adoxophyes orana Roslerstamm, Lepidoptera Tortricidae, also known as, yellow tortrix.
Distribution and harm: located in the northeast, North China, East China, central China, southwest and other places. The larvae damage of apple, pear, peach leaves, shoots, buds and fruit. Larvae spin silken leaf curl, food and mesophyll or winding bud and bud, the bud, bud can not be expanded. Eat fruit, resulting in the depth of the strip, punctate spots, affecting the quality of fruit.
Characteristics: Every years from 3 to 4, in young larvae in the bark crack, shear kerf and dead leaves office cocoon overwintering, the apple after germination was started. Larvae in the buds, leaves, buds and harm. Body slightly larger, spinning, with leaf into a bug bud, lurking danger. Overwintering larvae normally at 5 months, in late June to pupate, eclosion. Adults day V night out, with chemotaxis. The eggs produced in the leaves and fruit, a fish squamous arrangement. The larvae are very lively, and suspended animation to bud damage, the old cooked in the rolled leaves cocoon pupation.
Recommended prevention methods: in overwintering larvae was flourishing period and the L generation larvae occur early, each with 10000000000 /ml 667m2 spores Empedobacter brevis suspension agent of 80 to 100 45 kg water spraying a fine mist around.
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