Damage: Typically, damage occurs mostly in the stalk. However, in 2008 sunflower bud moth emergence was delayed and larvae were found in the bud causing injury to the developing head. The only time yield loss is noticeable is when larvae burrow into unopened buds, preventing proper head development. The larvae normally do not feed on developing seeds but confine feeding activities to the fleshy part of the head. The second generation has not been of economic significance.
Economic Thresholds: This insect has not been of economic significance, thus there are no thresholds established.
Scouting Method: None has been established.
Management: Insecticide use is NOT recommended for control of sunflower bud moth larvae since they are feeding within the plant. As a result, insecticides will have limited efficacy. There are no recommendations for controlling the adult bud moth.
Research: If the bud moth becomes an economic factor, the NSA will be prepared to fund research to establish management of the adult or larvae.
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