Development of Puccinia Horiana on Chrysanthemum Leaves in Relation to Chemical Compounds and Time of Their Application
نویسنده
چکیده
The effectiveness of 12 chemical compounds (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.
منابع مشابه
Cladosporium cladosporioides and Cladosporium pseudocladosporioides as potential new fungal antagonists of Puccinia horiana Henn., the causal agent of chrysanthemum white rust
Puccinia horiana Hennings, the causal agent of chrysanthemum white rust, is a worldwide quarantine organism and one of the most important fungal pathogens of Chrysanthemum × morifolium cultivars, which are used for cut flowers and as potted plants in commercial production regions of the world. It was previously reported to be controlled by Lecanicillium lecanii, Cladosporium sphaerospermum, C. ...
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