Symptoms appear as tiny sawdust piles scattered around fruit clusters.
European grapevine moth is an important pest of grapes and several deciduous trees. The larvaes feed on berries which makes the crops vulnerable to gray mold (Botrytis cinerea) and other fungi. Direct feeding can cause 100% yield losses.
Monitoring: At least once a week, inspect your fields closely and look for the presence of moths and symptoms on fruits.
Male mating disruption techniques: Use specially designed devices, such as synthetic sex pheromones, that are intended to disrupt the mating process by confusing males. This can result in a significant reduction of the insecticide applications needed.
The following are a few generic names of products found throughout large parts of the world and are frequently used against European grapevine moths: Methoxyfenozide, chlorantraniliprole, cypermethrin, indoxacarb, and spinetoram.
Spinosad-based products and bacillus thuringiensis
Careful thought should be taken when planning to use any of the above chemical marked in red. In some cases, the existing moth caterpillars population can rapidly develop a resistance to insecticides. Therefore, rotation between products based on different active ingredients is crucial. If caterpillar populations remain unchanged after a single application of one of the chemicals marked in red, future applications won’t just be inefficient; they’ll likely wipe out the presence of any beneficial insects within the field close surroundings and thus make the matter even worse.
*Names marked in red are considered to be highly poisonous to beneficial insects.
*Names marked in green are considered to be organic and IPM (integrated pest management) compatible.