RT Journal Article T1 Effective control of Neofusicoccum parvum in grapevines: combining Trichoderma spp. with chemical fungicides A1 Gómez Garay, María Aranzazu A1 Astudillo Calderón, Sergio A1 Tello Mariscal, Mª Luisa A1 Pintos López, Beatriz AB Vitis vinifera is highly susceptible to grapevine trunk diseases, with Neofusicoccum parvum recognized as a highly destructive pathogen. This study investigates the biocontrol potential of five Trichoderma species (T. harzianum, T. viride, T. asperellum, and T. virens) against N. parvum, evaluating multiple biocontrol mechanisms (mycoparasitism, competition for nutrients, production of volatile organic compounds (VOCs), and antibiosis) as well as their compatibility with the fungicides copper oxychloride and sulfur. Results demonstrated that (1) Trichoderma harzianum effectively suppressed N. parvum through VOC production, mycoparasitism, and nutrient competition, significantly reducing pathogen growth in planta while showing compatibility with both fungicides, highlighting its suitability for integrated disease management; (2) Trichoderma viride showed high inhibition of N. parvum in vitro, but its phytotoxicity in planta limits its field application. These findings support T. harzianum as a promising agent within integrated disease management strategies, offering a sustainable alternative to reduce chemical fungicide reliance in controlling grapevine trunk pathogens. PB MDPI YR 2024 FD 2024-11 LK https://hdl.handle.net/20.500.14352/118355 UL https://hdl.handle.net/20.500.14352/118355 LA eng NO Gomez-Garay A, Astudillo Calderón S, Tello Mariscal ML, López BP. Effective Control of Neofusicoccum parvum in Grapevines: Combining Trichoderma spp. with Chemical Fungicides. Agronomy 2024;14:2766. https://doi.org/10.3390/agronomy14122766. NO Funding:This research was funded by INIA, Ministry of Science, Innovation and Universities, Madrid, Spain, Project number RTA2015-0015-C02-02. NO Ministerio de Ciencia, Innovación y Universidades (España) DS Docta Complutense RD 6 abr 2025