Winter biodisinfestation with Brassica green manure is a promising management strategy for Phytophthora capsici control of protected pepper crops in humid temperate climate regions of northern Spain
| Autor: | Amaya Ortiz Barredo, Maite Gandariasbeitia, Sorkunde Mendarte Azcue, Mikel Ojinaga, Mireia Nuñez Zofio, Estibaliz Orbegozo, Santiago Larregla |
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| Přispěvatelé: | FEDER (INIA RTA 2011-00005-C03-03 and INIA RTA 2015-00060-C04-04), Basque Government (projects BIOSOL and REVABIO). MG was the recipient of a predoctoral contract (INIA-2017-0043), EO was the recipient of a technologist scholarship (Basque Government) |
| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
Capsicum annuum oospores biosolarization biofumigation Sinapis alba Brassica 01 natural sciences lcsh:Agriculture Green manure Pepper Temperate climate Root rot Cover crop biology fungi lcsh:S food and beverages 04 agricultural and veterinary sciences Agriculture Plant Protection biology.organism_classification Horticulture Phytophthora capsici 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Phytophthora Agronomy and Crop Science 010606 plant biology & botany |
| Zdroj: | Spanish Journal of Agricultural Research; Vol. 17 No. 1 (2019); e1005 Spanish Journal of Agricultural Research; Vol. 17 Núm. 1 (2019); e1005 SJAR. Spanish Journal of Agricultural Research instname Spanish Journal of Agricultural Research, Vol 17, Iss 1, Pp e1005-e1005 (2019) Spanish Journal of Agricultural Research; Vol 17, No 1 (2019); e1005 |
| ISSN: | 2171-9292 |
| Popis: | Phytophthora capsici causes root and crown rot of protected pepper (Capsicum annuum L.) crops in the Basque Country (northern Spain), a humid temperate climate area. The objective was to determine the effect of winter biofumigation and plastic cover (biodisinfestation) with Sinapis alba L. (cultivar 'Ludique') fresh green manure on the survival of introduced P. capsici inoculum (oospores) in a greenhouse soil. After autumn-winter Brassica cover crop soil incorporation in February, oospores remained at 15 and 30 cm depth for four weeks´ time exposure in two consecutive years, 2009 and 2010. Oospores viability was estimated with a plasmolysis method and infectivity with a potted pepper bioassay. Viability was significantly higher in biodisinfestated oospores than in the non-treated control in both years (81% and 21% relative increase in 2009 and 2010, respectively) and significantly higher at 30 cm depth than at 15 cm in 2009 (24% relative increase). Conversely, biodisinfestation significantly delayed disease incidence progression until the first half of infectivity bioassays in both years compared to the non-treated soils (83% and 75% relative decrease of dead plants in 2009 and 2010 respectively). The low soil temperatures could explain the low oospore survival reduction and suggest that the suppressiveness expressed in the infectivity bioassay was related with an increase of microbial activity in the biodisinfestation treatment. We conclude that winter biodisinfestation with fresh Brassica green manure is a promising management strategy for Phytophthora root rot control of protected peppers crops in regions of humid temperate climate such us northern Spain. |
| Databáze: | OpenAIRE |
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