09.03.2015 Views

Cereal crop mites

Cereal crop mites

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• Overwintered female <strong>mites</strong> begin to come<br />

out as fruit trees bud (average 9-119<br />

11℃).<br />

Egg laying peak is consistent with apple<br />

and pear flower stage.<br />

• Most eggs laid on two sides of main vein<br />

on backside of leaves.<br />

• Generations overlap each other from 2 nd<br />

generation on. Cause most severe damage<br />

from Jul. to Aug.<br />

• Spin silk to form webs.

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