Grapevine is one of the most important crops in Europe and in Italy. In South Tyrol region is the second most cultivated crop after apple, with a total cultivation of 5,300 ha, 20 cultivars and a wine production of 350,000 hl. Due to the particular geomorphology of the region, vineyards in South Tyrol are placed often close to highly urbanized areas, raising in the last years the concern of the public opinion about the use of synthetic pesticides. To improve the management of pest control with alternative and more eco-friendly ways, it is important to better understand the ecological interaction between plants and pest insects. In this project, we will characterize the induced volatile organic compounds produced by four grape cultivars (Barbera, Garganega, Pinot Noir, Riesling) under herbivore attack of the European grapevine moth Lobesia botrana (Lepidoptera: Tortricidae). Furthermore, VitisRoot Plus® - a PGPRs biostimulant- will be applied to ½ of the plants to enhance the development of root hairs and therefore positive effects on the nutrient uptake and on the vigourness of the grape plants. The final goal of this project is to assess the emission of VOCs using PTR-ToF-MS and GC-MS techniques of the fours grape cultivars under different experimental conditions and investigate if VitisRoot Plus ® biostimulant, may influence plant response to insect attack. The expected results might help further studies in developing new and sustainable strategies of grape pest control. The experiments will be done in collaboration with Dr. Luca Cappellin of the E. Mach Foundation of San Michele all'Adige, Trento.