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The objectives of this research were to determine the antagonistic activity of 8 insect microorganisms (isolated from eggs of some insect species) against phytopathogens: Pseudomonas lachrymans (Smith et Bryan) Carsner, Phoma betae Frank., Pythium sp. In the laboratory experiments the liquid cultures 2 and 3 completely inhibited the growth of Phoma betae mycelium from infected beet seeds. Under greenhouse...
The experiments carried out in vitro have showed that among many oils that have been investigated some of them retarded the growth of bacterium Erwinia carotovora subsp. atroseptica (peppermint, caravay and thyme oils at cocentrations 0.25 to 1.0%, thuja oil -at concentrations 2.0 and 4.0%, juniper oil -at concentrations 0.25 and 0.5%), and Pseudomonas lachrymans (peppermint, carovay and thyme oils...
Insecticides most often inhibit the development of fungal diseases, but can also stimulate them. The mechanisms of these phenomena are discussed and examples are given. The protective effect may be the result of direct pesticide influence on the pathogen, host susceptibility or other biocenotical components. The important factor is pest control which limits the infection of plants through the wounds...
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