Biological control of Fusarium wilts and other soilborne diseases by soil bacteria and fungi

Wong P.T.W., . (1986) Biological control of Fusarium wilts and other soilborne diseases by soil bacteria and fungi. [Proceedings Paper]

Fusarium ilts were serious diseases of a large number of field and horticultural crops in temperate and tropical countries. The introduction of specific strains of soil bacteria called fluorescent pseudomonads to soil infested with Fusarium oxysporum controlled the pathogens in glasshouse experiments. In the United States commercial crops of carnations had been protected sagainst Fusarium wilt by the additions of small amount 600 g/m2 of a suppressive soil bearing large numbers of the fluorescent pseodomonads to infested carnations beds. In france similar suppresssive soil had been effective in controlling rock melon wilt. However the suppression in the latter case was thought to be due to competition from saprophytic fusaria. Fluorescent pseudomonads and other non-pathogenic fungi had also been shown to control wheat in glasshouse and small-scale field experiments. The mechanisms of suppressionby this microbial antagonists had not benn fully elucidated but appear to involved antibiosis. Other examples of succesful biological control include control of Rhizoctonia solani by Trichoderma spp. and the control of Sclerotinia diseases by various mycoparasites. The role of this forms of biological control in integrated pest management was discussed

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Abstract

Fusarium ilts were serious diseases of a large number of field and horticultural crops in temperate and tropical countries. The introduction of specific strains of soil bacteria called fluorescent pseudomonads to soil infested with Fusarium oxysporum controlled the pathogens in glasshouse experiments. In the United States commercial crops of carnations had been protected sagainst Fusarium wilt by the additions of small amount 600 g/m2 of a suppressive soil bearing large numbers of the fluorescent pseodomonads to infested carnations beds. In france similar suppresssive soil had been effective in controlling rock melon wilt. However the suppression in the latter case was thought to be due to competition from saprophytic fusaria. Fluorescent pseudomonads and other non-pathogenic fungi had also been shown to control wheat in glasshouse and small-scale field experiments. The mechanisms of suppressionby this microbial antagonists had not benn fully elucidated but appear to involved antibiosis. Other examples of succesful biological control include control of Rhizoctonia solani by Trichoderma spp. and the control of Sclerotinia diseases by various mycoparasites. The role of this forms of biological control in integrated pest management was discussed

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Item Type:	Proceedings Paper
Additional Information:	42 ref. Summary En
AGROVOC Term:	FUSARIUM
AGROVOC Term:	MARCHITEZ
AGROVOC Term:	ORGANISMOS PARA CONTROL BIOLOGICO
AGROVOC Term:	PARASITOS
AGROVOC Term:	MALASIA/ DEPREDADORES
Geographical Term:	MALAYSIA
Depositing User:	Ms. Norfaezah Khomsan
Last Modified:	24 Apr 2025 05:25
URI:	http://webagris.upm.edu.my/id/eprint/14035

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