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Rezistence blýskáčka řepkového k vybraným účinným látkám insekticidů
Šafaříková, Hana
This thesis was compiled during the solution of the project MA NAZV QJ1230077 and it is focuses on monitoring of pollen beetle (Brassicogethes aeneus, Fab., 1775) populations resistence to selected insecticides, in particular lambda-cyhalotrin, cypermetrin, tau-fluvalinate, Biscaya 240 OD and chlorpyrifos-ethyl in South Moravia. Beetles were collected during the spring 2016. Their sensitivity to these insecticides active ingredients was tested in laboratory. Various concentrations of active substances and beetles´ mortality after 24 hours was evaluated according to methodology IRAC (adult-vial-test met. 11, 21, 25, www.irac-online.org). Beetles´ sensitivity depends on the dose of the active substance and the location where the beetles were taken from.
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Studium možnosti eliminace spály růžovitých u kdouloně pomocí antibiotik a meristémové kultury in vitro
Šafaříková, Hana
I have focused, in my thesis, on lesser-known species of pome fruit, which is the quince (Cydonia oblonga Mill.). My disertation presents a characteristic of this tree, introduction to its growing, propagation, it is using and I have also focused on the disease caused by the pathogen Erwinia amylovora, called the fire blight of fruit trees. I have tried to eliminate the disease by using a treatment of antibiotics in meristem cultures under in vitro conditions. It has been processed in total on 22 varieties of quince and 2 samples of annual shoot have been taken at the School of herbaceous farm Žabčice. The first sampling took a place in winter and the second one in summer, subsequently it has been applied a treatment of three kinds of antibiotics diluted in various concentrations all happened under a specific conditions in the laboratory. The illness, for all varieties, has not shown any further pressence after the treatment, but the individual segments were not able to survive longer period of time. The reason was probably a presence of other pathogens occuring in the segments and the curative intervention had no effect on them or a decrease in vitality of buds could have been caused by the antibiotic treatment.
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Vinohradnické faktory ovlivňující obsah dusíkatých látek v hroznech
Šafaříková, Hana
In my work I focus on the vineyard factors that affect the content of nitrogen compounds in grapes . The first part deals with the importance of nitrogen in the vine nutrition and its resources , as well as nitrogen fertilization . Symptoms of excess or deficiency, the method of fertilization and kinds of nitrogen fertilizers. The second part is devoted to nitrogen substances in grapes, must and wine and assimilable nitrogen. The final part focuses on planting the vineyard and its species and plants that are able to accumulate nitrogen.
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