POSSIBILITY TO USE FUNGAL PATHOGENS AGAIN ST WEEDS GALINSOGA-PARVIFLORA AND GALINSOGA-CILIATA

Total of 10 fungal species are identified on Galinsoga ciliata and G. parviflora Colletotrichum gloeosporioides is found to be the-casual ag ent of G. parviflora anthracnose lesions. Seedlings of both Galinsoga species are killed after 7 days following the spray inoculation of con idia in concentrations of 1 x 10(6) spores per mi. Increasing inoculum concentrations from 2.5 x 10(4) to 2.5 x 10(6) spores per mi result i n increase of seedling mortality ratio. No significant differences in damage and mortality (87.84 and 87 % accordingly) resulted from variat ion in dewing treatment (0-24 hours) at 29 degrees C of G. parviflora plants. These results suggest the possibility to use C. gloeosporioide s as mycoherbicide.