| Journal: | Acta scientiarum. Agronomy |
| Database: | PERIÓDICA |
| System number: | 000459890 |
| ISSN: | 1679-9275 |
| Authors: | Rusin, Carine1 Cavalcanti, Fábio Rossi2 Lima, Patrícia Carla Giloni de3 Faria, Cacilda Márcia Duarte Rios1 Almança, Marcus André Kurtz4 Botelho, Renato Vasconcelos1 |
| Institutions: | 1Universidade Estadual do Centro-Oeste, Departamento de Agronomia, Guarapuava, Parana. Brasil 2Empresa Brasileira de Pesquisa Agropecuária, Uva e Vinho, Bento Goncalves, Rio Grande do Sul. Brasil 3Universidade Estadual do Centro-Oeste, Departamento de Biologia, Guarapuava, Parana. Brasil 4Instituto Federal do Rio Grande do Sul, Bento Goncalves, Rio Grande do Sul. Brasil |
| Year: | 2021 |
| Volumen: | 43 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental, analítico |
| English abstract | Grapevine trunk diseases are among the most important limiting factors of worldwide viticulture. In this context, we aimed to verify the effect of chemical fungicides, biological agents and plant extracts on the control of Lasiodiplodia theobromae in pruning wounds and their physiological effects in cv. Syrah grapevines. Plant extracts (clove, cinnamon, garlic, rosemary and lemongrass), commercial fungicides (difeconazole, tebuconazole, mancozeb, sulfur, pyraclostrobin, fosetyl-Al, and azoxystrobin), chitosan, Trichoderma harzianum and Bacillus subtilis were used for the in vitro trials. The protection of pruning wounds in the potted vines was studied using fosetyl-Al, tebuconazole, Trichoderma harzianum, Bacillus subtilis, garlic extract and clove extract. The experiments were carried out through two vegetative cycles: 2015/2016 and 2016/2017. The length of wood discoloration, pathogen re-isolation percentage, fresh mass of the pruning material, peroxidase activity, fluorescence, chlorophyll index, phenological stages, shoot length and leaf area were evaluated. The treatments with clove, garlic extract, tebuconazole, pyraclostrobin, mancozeb, fosetyl-Al and B. subtilis reduced mycelial growth by more than 90%. In the grapevines, the use of T. harzianum decreased the re-isolation of L. theobromae, but no differences were verified for the other plant evaluations. We concluded that the use of T. harzianum would be a potential option for wound protection without altering the physiological aspects of cv. Syrah grapevines |
| Disciplines: | Agrociencias, Biología |
| Keyword: | Hongos, Plantas para uso industrial, Fitopatología, Lasiodiplodia theobromae, Trichoderma harzianum, Control biológico, Vid |
| Keyword: | Fungi, Plants for industrial use, Phytopathology, Trichoderma harzianum, Lasiodiplodia theobromae, Grapevine, Biological control |
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