102191 20230519145443.0 doi 10.3390/agronomy11050976 sideral 124298 ART-2021-124298 eng Langa Lomba, Natalia Assessment of conjugate complexes of chitosan and Urtica dioica or Equisetum arvense extracts for the control of grapevine trunk pathogens 2021 Access copy available to the general public Unrestricted In the work presented herein, we analyze the efficacy of three basic substances that comply with European Regulation (EC) No 1107/2009, namely chitosan, horsetail (Equisetum arvense L.) and nettle (Urtica dioica L.), for the control of grapevine trunk diseases (GTDs) in organic farming. The E. arvense and U. dioica aqueous extracts, prepared according to SANCO/12386/2013 and SANTE/11809/2016, have been studied by gas chromatography–mass spectrometry (GC-MS), identifying their main active constituents. The three basic substances, either alone or in combination (forming conjugate complexes), have been tested in vitro against eight Botryosphaeriaceae species, and in vivo, in grafted plants artificially inoculated with Neofusicoccum parvum and Diplodia seriata. A clear synergistic behavior between chitosan and the two plant extracts has been observed in the mycelial growth inhibition tests (resulting in EC90 values as low as 208 μg·mL−1 for some of the isolates), and statistically significant differences have been found in terms of vascular necroses lengths between treated and non-treated plants, providing further evidence of aforementioned synergism in the case of D. seriata. The reported data supports the possibility of extending the applications of these three basic substances in Viticulture beyond the treatment of mildew. info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 3.949 2021 PLANT SCIENCES 55 / 240 = 0.229 2021 Q1 T1 AGRONOMY 18 / 90 = 0.2 2021 Q1 T1 0.654 2021 Agronomy and Crop Science 2021 Q1 3.9 2021 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Buzón Durán, Laura Martín Ramos, Pablo Casanova Gascón, José Martín Gil, Jesús Sánchez Hernández, Eva González García, Vicente 11, 5 (2021), 976 [16 pp.] Agronomy Agronomy 2073-4395 1607312 http://zaguan.unizar.es/record/102191/files/texto_completo.pdf Versión publicada 2786406 http://zaguan.unizar.es/record/102191/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:102191 articulos driver 2023-05-18-14:35:53 ARTICLE