<em>In Vitro</em> and <em>In Planta</em> Evaluation of <em>Trichoderma</em> spp. for the Control of <em>Neopestalotiopsis rosae</em> on Strawberry
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Neopestalotiopsis rosae is an emerging fungal pathogen causing leaf blight and fruit rot on strawberry. Due to limited fungicide availability and the small number of substances confirmed to be effective against this pathogen, alternative disease control strategies have become a focus of current research. This study aimed to assess, quantify and compare the efficacy of extracts and inocula of Trichoderma spp. with the conventional fungicide Switch in controlling N. rosae. While T. harzianum T16 and T. asperellum T23 extracts showed moderate inhibitory effects against N. rosae, T. koningiopsis T10 extracts were able to inhibit mycelial growth and conidia germination as effectively as the reference fungicide. Under greenhouse conditions, extracts from T. koningiopsis T10 were as effective as Switch in controlling leaf spots incited by N. rosae. Our findings highlight T. koningiopsis T10 extracts as a promising alternative to chemical fungicides in the integrated management of N. rosae on strawberry.