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Search for "ONDR����KOV�� E.": 2 articles found.
ONDRÁČKOVÁ E., SEIDENGLANZ M., ŠAFÁŘ J. (2019): Effect of seventeen pesticides on mycelial growth of Akanthomyces, Beauveria, Cordyceps and Purpureocillium strains. [entomopathogenic fungi, growth inhibition, Lecanicillium, Isaria, fungicides, insecticides, herbicides.] Czech Mycology 71(2): 123-135 (published: 1st November, 2019)
abstract
The effect of fungicides, herbicides and insecticides on mycelial growth of entomopathogenic fungi Akanthomyces muscarius, Beauveria bassiana, Cordyceps fumosorosea and Purpureocillium lilacinum were tested under laboratory conditions. Fungicides containing the active ingredients carboxin & thiram, dimethomorph & mancozeb, mancozeb & metalaxyl-M, boscalid & pyraclostrobin, mancozeb, metalaxyl-M & fludioxonil and herbicides with active ingredients pendimethalin, pethoxamid, chlorotoluron and pendimethalin & imazamox statistically significantly inhibited the mycelial growth of all tested fungi (20.4–100% and 14.9–100% inhibition). Insecticides did not significantly inhibit the mycelial growth of Akanthomyces and Purpureocillium strains but active ingredients tau-fluvalinate, pirimicarb and acetamiprid inhibited the mycelial growth of Beauveria strains (22.6–30% inhibition). The mycelial growth of Cordyceps strains was faster in the presence of insecticides than in controls.
ONDRÁČKOVÁ E., ONDŘEJ M., PROKINOVÁ E., NESRSTA M. (2013): Mycoparasitic fungi reducing the incidence and virulence of Bipolaris sorokiniana. [mycoparasitic activity, mycoparasitic fungi, Clonostachys, Trichoderma, Bipolaris sorokiniana] Czech Mycology 65(1): 103-112 (published: 10th June, 2013)
abstract
The mycoparasitic efficiency of 28 strains/isolates of Clonostachys rosea f. rosea and Clonostachys rosea f. catenulata against the pathogenic fungus Bipolaris sorokiniana was determined in dual cultures on Czapek-Dox nutrient agar. Strains with low and medium efficiency were antagonistically inhibited by B. sorokiniana, and inhibitory zones were formed between the colonies of both fungi. The mycelium of Clonostachys strains with high efficiency overgrew and degraded B. sorokiniana colonies without formation of an inhibitory zone. In dual cultures, Trichoderma sp. and the most effective Clonostachys strains degraded B. sorokiniana colonies within 3 to 5 and 12 to 15 days, respectively.When rye seeds were treated with a mixture of C. rosea f. rosea, Trichoderma sp. and B. sorokiniana, development of B. sorokiniana on both seeds and seedlings was reduced when compared with a B. sorokiniana treatment. The treatment of rye seeds with Clonostachys and Trichoderma had a positive effect on seed germination and seedling length.
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