Fusarium Root and Stem Rot of Greenhouse Cucumber: Aerial Dispersal of Inoculum

T. D. VATCHEV
Institute of Soil Science, Agrotechnologies and Plant Protection “Nikola Poushkarov”, BG – 1080 Sofia, Bulgaria

Abstract

VATCHEV, T. D., 2015. Fusarium root and stem rot of greenhouse cucumber: aerial distribution of inoculum. Bulg. J. Agric. Sci., 21: 650–654

Fusarium root and stem rot is one of the most damaging diseases of greenhouse cucumber. This study reveals development and spread of airborne inoculum of Fusarium oxysporum f. sp. radicis-cucumerinum the causal agent of the disease. Infective propagules of the pathogen were trapped from the air and recovered from greenhouse interior structures and equipment, including concrete floors, paths and stumps, iron scaffolding components, glass walls, roof surfaces, plastic pots and planters. The results suggest possible reinfestation of freshly steamed or fumigated soils by airborne propagules of the pathogen.

Key words: Fusarium oxysporum f.sp. radicis-cucumerinum, root and stem rot, cucumber, airborne disease spread, epidemiology

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