Mechanisms to control grape erineum mite Colomerus vitis Pgst. in organic, biodynamic and traditional vineyards of the Crimea

Eco-oriented organic and biodynamic vineyards no longer relying on pesticides in protection schemes are indicative of a current trend in grape and wine growing of the Crimea. In this connection, new solutions to reduce pests and diseases have to be sought for, and monitoring which includes both eco-faunistic research and prediction of the numbers of phytophages is becoming of primary importance in the system of control of injurious species on grapes. A wide distribution of grape erineum mite Colomerus vitis Pgst. was registered in the bearing study vineyards on the South Coast of the Crimea and in the south-west of the Peninsula though its economic damage is negligible. The risk of the detrimental effect of the mite in the young study vineyards during the first two years after planting was stated. Key mechanisms to regulate the numbers of C. vitis in the organic and biodynamic study vineyards were revealed, such as winter pruning of canes as part of farming practices, application of sulfur to control Erysiphe necator, and natural regulation by indigenous predatory species of mites and other insects.