Inactivation of pathogenic organisms of cassava (Manihot esculenta Crantz) by heat and other treatments

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dc.creatorLozano, J.C.
dc.date1975
dc.date2016-02-29T17:10:42Z
dc.date2016-02-29T17:10:42Z
dc.date.accessioned2026-06-27T14:28:52Z
dc.descriptionCIAT`s contribution to this joint research program was (1) to develop a technique for the production of bacteria-free planting stocks of cassava and (2) to study the effect of physical therapeutic agents on vegetative material used for propagation. The propagation technique developed to produce CBB-free cuttings is described. Guidelines are given for eradicating CBB from infected plantations. Hot water, microwave and ultraviolet (UV) light treatments of cuttings were evaluated. It was found that hot water or microwaves can seriously reduce germination of cuttings, whereas UV light for 7 h had no effect on germination. The optimum hot water treatment for cuttings was 52 degrees Celsius/30 min; the optimum microwave treatment, 75-90 sec of exposure. CBB, a vascular pathogen, was not controlled by these treatments. Its inactivity or inhibitory point, when associated with its host, is higher than the optimum point of sensitivity of the cuttings to these treatments. Botryodiplodia sp., Glomerella sp. and the causal agent of the superelongation disease (a lower ascomycete) were controlled by hot water or microwave treatments only in the case of early infection.UV light exposure did not control these pathogens. Since green cuttings are very sensitive to hot water and microwaves, these treatments are unsuitable for this type of cutting. (CIAT)
dc.formatapplication/pdf
dc.identifierhttps://hdl.handle.net/10568/71399
dc.identifier.urihttp://hdl.handle.net/123456789/79474
dc.languageen
dc.publisherInternational Center for Tropical Agriculture
dc.rightsOpen Access
dc.sourceLOZANO, J.C. 1975. Inactivation of pathogenic organisms of cassava (Manihot esculenta Crantz) by heat and other treatments. Centro Internacional de Agricultura Tropical (CIAT); , Cali, CO. 33 p.
dc.subjectcassava bacterial blight
dc.subjectcuttings
dc.subjectdisease control
dc.subjectmanihot esculenta
dc.subjectmycoses
dc.subjectbacterial diseases
dc.subjectdevelopment
dc.subjectdiseases and pathogens
dc.subjectmanihot
dc.subjectpest control
dc.subjectpests
dc.subjectpropagation materials
dc.subjectstarch crops
dc.titleInactivation of pathogenic organisms of cassava (Manihot esculenta Crantz) by heat and other treatments
dc.typeReport

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