TOLERANCE OF TRICHODERMA HARZIANUM RIFAI - A BIOCONTROL AGENT-TO AGROCHEMICALS

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dc.contributor.advisorMishra, Ashok
dc.contributor.authorSharma, Suresh D.
dc.date.accessioned2018-05-11T11:48:45Z
dc.date.available2018-05-11T11:48:45Z
dc.date.issued1992
dc.description.abstractBiological control strategy has been demonstrated for the management of soil-borne plant diseases where management by other means are difficult. Trichoderma Spp. have gained considerable importance as sole application or integrated with lov/er doses of fungicides. Since,' the biocontrol agent is to be applied in soil, it is important to ascertain its tolerance to various agrochemicals used in the production technology. In the in vitro studies, on the effect of different agrochemicals on the growth and spore germination of Trichoderma harzianum Rifai it was found that the bio-agent could tolerate higher concentrations of chemicals. Among the fungicides like Metalaxyl it could grow well and showed less inhibition in spore germination. Among the different insecticides Aldicarb Phorate and Carbofxiran proved less toxic whereas Phenamiphos proved toxic to T, harzianum. Nematicide Ethoprop was less toxic while Vapam was highly toxic. Of the herbicides tested 2,4-D supported maximum growth and spore germination. All the fertilizers tested except ZnSO. wfirtfnot only supportive but stimulatory to growth and spore germination . Urea was highly stimulatory to growth and spore germination. In generation series and cross-toletance studies T. harzlanxim acquired tolerance/resistance to higher doses of fungicides (Captafol, Captan, Thiram and Carbendazim). In integrated control studies T. harzianum (TH (N))+ fungicide reduced the infection of R. bataticola in cotton and S. rolfsii in peanut significantly. However, a combination of Carbendazim with fungicide-tolerant isolate of T. harzianxim (TH(T)) was most effective in reducing root-rot of cotton while Thiram in combination with TH(T) was the best in reducing stem rot of peanut.en_US
dc.identifier.urihttp://krishikosh.egranth.ac.in/handle/1/5810045363
dc.keywordsTOLERANCE OF TRICHODERMA HARZIANUM RIFAI, A BIOCONTROL AGENT, AGROCHEMICALSen_US
dc.language.isoenen_US
dc.publisherAAU, Ananden_US
dc.research.problemTOLERANCE OF TRICHODERMA HARZIANUM RIFAI - A BIOCONTROL AGENT-TO AGROCHEMICALSen_US
dc.subPlant Pathologyen_US
dc.subjectPlant Pathology, Agricultureen_US
dc.subjectA STUDYen_US
dc.themeTOLERANCE OF TRICHODERMA HARZIANUM RIFAI - A BIOCONTROL AGENT-TO AGROCHEMICALSen_US
dc.these.typeM.Scen_US
dc.titleTOLERANCE OF TRICHODERMA HARZIANUM RIFAI - A BIOCONTROL AGENT-TO AGROCHEMICALSen_US
dc.typeThesisen_US
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