Chitosan reduces naturally occurring plant pathogenic fungi and increases nematophagous fungus Purpureocillium in soil under field conditions - Lopez-Nuñez, Raquel; Prieto-Rubio, Jorge; Bautista, Inmaculada; Lidón-Cerezuela, Antonio L.; Valverde-Urrea, Miguel; Lopez-Moya, Federico; Lopez-Llorca, Luis V. (Frontiers in Agronomy, 2025)