Within the framework of the National Program for the Prevention and Eradication of Lobesia botrana, the National Service for Agrifood Health and Quality (Senasa) reports that the first alert for the chemical/biological control of the grapevine moth is in force in the province of San Juan. Grape growers must make the first application of phytosanitary products when the crop has visible flower clusters (5 to 7 cm) in order to control the eggs and larvae, coming from the first flight of adult stages of the pest. The application deadline will be October 17. The treatment must be repeated according to the residual power of the chosen product, with the aim of keeping the crop protected throughout the established period. It should be noted that the start date of the treatment will depend on the variety and the area where the crop is located, for which each producer must pay close attention to the moment that their flower clusters reach 5 cm. The alerts are intended to indicate the most opportune moment to carry out the applications.