STUDIES ON THE INFLUENCE OF COVERAGE CULTURE WITH Phacelia tanacetifolia ON BOTH USEFUL AND HARMFUL MITES WILDLIFE IN THE TARNAVE VINEYARD

摘要

The study regarding the influence of the ecobiological coverage method with Phacelia tanacetifolia of intervals between rows, on useful and harmful wildlife mites, was conducted in 2014-2016. The experiments were placed in the experimental plots of the Research Station for Viticulture and Enology Blaj, cultivated with the Muscat Ottonel, Feteasca regala and Brumariu varieties. Rows with Phacelia tanacetifolia in pure culture alternating with white clover, vetch and black field. The objective was the protection of natural populations of predators followed by the application of cultural measures favourable to them, which helps limit mite attacks produced by Calepitrimerus vitis and Colomerus vitis, the most important pests in the Tarnave vineyard plantations. The most important useful species reported were Typhlodromus pyri, Amblyseius andersoni, Typhlodromus aberrans Oud, Stethorus punctillum Weise and some thripidae and crisophydae species. Phacelia tanacetifolia has proven its worth as a food source for populations of natural predators, pollinators and other beneficial insects. Coating culture of Phacelia tanacetifolia in vineyards can be seen as an important method of sustainable biological control of pest mites Calepitrimerus vitis and Colomerus vitis.