ORIGINAL ARTICLE
Development of Puccinia horiana on chrysanthemum leaves in relation to chemical compounds and time of their application
 
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Research Institute of Pomology and Floriculture Pomologiczna 18, 96-100 Skierniewice, Poland
CORRESPONDING AUTHOR
Adam T. Wojdyła
Research Institute of Pomology and Floriculture Pomologiczna 18, 96-100 Skierniewice, Poland
 
Journal of Plant Protection Research 2004;44(2):91–102
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ABSTRACT
The effectiveness of 12 chemicalcompounds (azoxystrobin, carbendazim, chlorothalonil, fenarimol, folpet, mancozeb, myclobutanil + mancozeb, prochloraz +carbendazim, tebuconazole + triadimefon, tetraconazole + chlorothalonil, tiophanate-methyl, tridemorph+epoxiconazole) in the control of Puccinia horiana was tested on chrysanthemum cv. Fiji Yellow. Additionally, their influence on plant growth, size of pustules and eventual phytotoxicity were assessed. Plants were sprayed 4 times at weekly intervals. Chrysanthemum sprayed with azoxystrobin,myclobutanil+mancozeb, tebuconazole + triadimefon and tridemorph + epoxiconazole did not show disease symptoms. Curatively application of these fungicides destroyed over 95% of pustules. Carbendazim, fenarimol and folpet were slightly less effective than the other tested fungicides. Mixture of tebuconazole + triadimefon caused some growth retardant effect but did not result in phytotoxicity problems. Tridemorph + epoxiconazole showed strong phytotoxicity to tested chrysanthemum cultivar.
CONFLICT OF INTEREST
The authors have declared that no conflict of interests exist.
 
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