SUPPRESSION OF SOIL-BORNE MYCOSIS BY GRAPE MARC COMPOST IN VEGETABLE SEEDLINGS

Authors

  • Milagrosa Santos
  • Fernando Diánez
  • Miguel De Cara
  • Julio C. Tello
Keywords: compost de vid, fusarium oxysporum f. sp. radicis-cucumerinum, rhizoctonia solani, pythium aphanidermatum y phytophthora nicotianae var. parasitica, supresividad, control biológico

Abstract

Suppression of soil-borne diseases of horticultural crops by compost has been attributed to the activities of antagonistic microorganisms. A great diversity of biological control agents naturally colonize compost. This is especially true for biological control agents effective against the soilborne Oomycete pathogens. The purpose of this research was to determine the suppressive capacity of grape marc compost against Fusarium oxysporum f. sp. radicis-cucumerinum, Rhizoctonia solani, Pythium aphanidermatum and Phytophthora parasitica. Previously, antagonist in vitro assay were performed with 432 microbial morphologies isolated from grape marc compost. Seven microorganisms were selected for further bioassay with radish-Rhizoctonia solani, melon-Fusarium oxysporum f. sp. radicis-cucumerinum, and tomato-Phytophthora parasitica and two microorganisms for cucumber-Pythium aphanidermatum. Those experiments indicate, that grape marc compost reduce the severity of Pythium dumping-off on cucumber, but do not reduce the severity of Phytophthora root rot on tomato, Fusarium oxysporum f. sp. radicis-cucumerinum on melon and Rhizoctonia solani on radish. The enrichment of compost or vermiculite with the selected microbes for compost do not improved the suppressive effects.

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Author Biographies

Milagrosa Santos

Departamento de Producción Vegetal Escuela Politécnica Superior Universidad de Almería

Fernando Diánez

Departamento de Producción Vegetal Escuela Politécnica Superior Universidad de Almería

Miguel De Cara

Departamento de Producción Vegetal Escuela Politécnica Superior Universidad de Almería

Julio C. Tello

Departamento de Producción Vegetal Escuela Politécnica Superior Universidad de Almería
Published
22-04-2008
How to Cite
Santos, M., Diánez, F., De Cara, M., & Tello, J. C. (2008). SUPPRESSION OF SOIL-BORNE MYCOSIS BY GRAPE MARC COMPOST IN VEGETABLE SEEDLINGS. Agroecology, 1, 49–62. Retrieved from https://revistas.um.es/agroecologia/article/view/20
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Artículos