Efficacy of Biological and Chemical Treatments for Control of Fusarium Root and Stem Rot on Greenhouse Cucumber

Plant Disease
S RoseZamir K Punja

Abstract

Potential disease control methods were evaluated against root and stem rot of cucumber (Cucumis sativus) caused by Fusarium oxysporum f. sp. radicis-cucumerinum. Crab/shrimp shell chitin; three composted media; the biological control agents Pseudomonas chlororaphis strain 63-28, Trichoderma harzianum (RootShield Drench), Streptomyces griseoviridis (Mycostop), Gliocladium catenulatum (Prestop WP, Prestop Mix), and Trichoderma (Gliocladium) virens (SoilGard); and the fungicides thiram or benomyl were added at seeding time followed by inoculation with the pathogen. The addition of chitin (4%, vol/vol) to a peat-based medium significantly (P ≤ 0.05) enhanced seedling growth, increased soil pH, and reduced F. oxysporum f. sp. radicis-cucumerinum populations, but the severity of disease was increased. The addition of composted media (greenhouse compost, windrow composted dairy solids, and vermi-composted dairy solids) to the seeding cavity in a rock wool block medium, followed 48 h later by inoculation with F. oxysporum f. sp. radicis-cucumerinum, reduced seedling mortality when measured after 37 days. Greenhouse compost was significantly (P ≤ 0.05) more suppressive than the other two composts, and the suppression was partially elimi...Continue Reading

References

Nov 10, 2001·Annual Review of Phytopathology·T C Paulitz, R R Bélanger
Oct 24, 2008·Phytopathology·P P SinghY R Chung

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Citations

Mar 12, 2011·Pest Management Science·Veerle MommaertsGuy Smagghe
Jun 26, 2012·Environmental Science and Pollution Research International·Xiao HuangWeixiang Wu
Nov 16, 2010·Canadian Journal of Microbiology·Geoffrey G Bradley, Zamir K Punja
Aug 5, 2005·Annual Review of Phytopathology·D R Fravel

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