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Home → Publications → National Nursery Proceedings → 1989 → Effects of Fumigation on Soil Pathogens and Beneficial Microorganisms

Effects of Fumigation on Soil Pathogens and Beneficial Microorganisms

Soil fumigation with broad-spectrum biocides is a non-selective means of killing soil-borne pathogens in forest seedling nurseries. Beneficial microorganisms (antagonists, competitors, pathogen parasites and mycorrhizal fungi) are also killed by most fumigants. Organisms are killed by direct contact with fumigants. Dormant structures of microorganisms are usually more resistant to fumigant action. Specific fumigants are more effective against certain microorganisms. Fumigant effects on populations of selected pathogens (Fusarium, Pythium, Phytophthora, Rhizoctonia, Macrophomina, and Phoma) and certain antagonistic fungi, bacteria, and mycorrhizal symbionts are discussed.


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Author(s): Robert L. James

Publication: National Nursery Proceedings - 1989

Event: Intermountain Forest Nursery Association Meeting
1989 - Bismark, ND