BIOLOGICAL CONTROL OF TOM ATO CORKY ROOT ROT CAUSED BY PYRENOCHAETA LYCOPERSICI USING TRICHODERMA HARZIANUM RIFAI RACE KRL-AG2

摘要

The aim of this study was to determine the effect of Trichodenna harzianum Rifai race KRL-AG2 (TH) on the biological control of Corky root rot (Pyrenochaeta lycopersici, CRR) which caused significant yield losses in tomato cultivation. For this purpose, in concomitant inoculations with biological control agent alternative to chemical control with fungus (CRR + TH) and in 15 days squential inoculations (CRR+ 15 days after or before and singcl or twice TH); It was found that using the biological preparation of TH once applications was not enough, but the incidence of the disease decreased significantly in two applications. In study. Money marker. Alice craig and H2274 tomato cultivars in the experiments on the highest % effect on Pyrenochaeta lycopersici, CRR + 15 days before the twice TH application, respectively 72.24-70.63-68.73%, while the lowest % effect was obtained 15,21-21,19-17,45%, with CRR -15 days after TH applications. This study has revealed that the application of high amounts of biological preparation Trichodenna harzianum Rifai race KRL-AG2 would be an effective alternative to chemical control in order to prevent long-term diseases as symptoms become apparent, as in Pyrenochaeta lycopersici disease pathogen.