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Výskyt patogenů a škůdců v porostu máku setého
Gabčíková, Rebeka
This work in its theoretical part deals with the basic characteristics of oilseed poppy cultivation, with a focus on the characterization of pests and diseases. The practical part of the work was conducted in the form of an experiment, which was carried out on the land of the company Agroregión a.s., based in Rajec, Slovakia. The experiment consisted of monitoring pests and diseases and evaluating the abundance of their occurrence in different variants of chemical treatment (control, insecticide, insecticide + fungicide). The occurrence of the black bean aphid (Aphid fabae) was detected among the pests, for which the direct impact of insecticidal treatment on the abundance could not be demonstrated. The occurrence of poppy downy mildew (Peronospora arborescens) was confirmed among the diseases, and the results in the form of the percentage of affected plants proved to be an insufficient measure for the evaluation of the disease progress. However, from the attached photographs, it is apparent that fungicidal protection in this case provided significantly better plant health.
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Prostorové rozmístění škůdců v porostu máku setého v okolí Rozseče
Špička, František
The occurrence of the opium poppy pests was observed in the Bohemian-Moravian highland around the village Rozseč in the years 2012 on two study areas, in the year 2014 on four study areas. There was discovered occurrence of three pests. The occur-rence of poppy root weevil exceeded threshold on all study areas. In the year 2012 one plant had occurrence on an average of 4.32--5.82 larvae. 3.15--5.18 adults on meter of line were registered, maximal amount was nine adults in the year 2014. The infestation intensity of plants was 29--61 %. 1.3--2.56 larvae on one plant were discovered, maxi-mum seven larvae. The root weevil occurred evenly on all area of all study areas. Weevil poppy was discovered on study area with lowest height above sea level (604 m) with west inclination only in the year 2014. Adults were registered on five poppy head. The occurrence of weevil poppy obviously was not disintegrating on all area. The black bean aphid occurred in the middle intensity in the year 2012. 4--11% infestation of plants was discovered after leaving overflight from the winter hosts in the year 2014. 17--41% infestation of plants was discovered before blossom. The irregular dispersion of the black bean aphid on a few lands could have been caused by wind.
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Závislost početnosti vybraných druhů mšic (Aphididae) na počasí
Marková, Zuzana
This study focuses on fluctuations of abundance of the following aphids acting as viral vectors of potato plants (Solanum tuberosum L.): Leaf-curling plum aphid (Brachycaudus helichrysi Kaltenbach, 1843), Black bean aphid (Aphis fabae Scopoli, 1769), Peach-potato aphid (Myzus persicae Sulzer, 1776), Bird cherry-oat aphid (Rhopalosiphum padi Linnaeus, 1758) and the Aphis genus. The abundance of the winged forms of these aphids was evaluated according to samples from suction trap in Lípa u Havlíčkova Brodu in Czech Republic collected during the period from 2004 to 2015. This bachelor's thesis examines the effect of four climatic factors (temperature, radiation, rainfall and relative air humidity) on selected aphids in the year with the highest abundance of the monitored period.
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Prostorové rozmístění škůdců v porostu máku setého v okolí Rozseče
Špička, František
The occurrence of the opium poppy pests was observed in the Bohemian-Moravian highland around the village Rozseč in the years 2012 on two study areas, in the year 2014 on four study areas. There was discovered occurrence of three pests. The occur-rence of poppy root weevil exceeded threshold on all study areas. In the year 2012 one plant had occurrence on an average of 4.32--5.82 larvae. 3.15--5.18 adults on meter of line were registered, maximal amount was nine adults in the year 2014. The infestation intensity of plants was 29--61 %. 1.3--2.56 larvae on one plant were discovered, maxi-mum seven larvae. The root weevil occurred evenly on all area of all study areas. Weevil poppy was discovered on study area with lowest height above sea level (604 m) with west inclination only in the year 2014. Adults were registered on five poppy head. The occurrence of weevil poppy obviously was not disintegrating on all area. The black bean aphid occurred in the middle intensity in the year 2012. 4--11% infestation of plants was discovered after leaving overflight from the winter hosts in the year 2014. 17--41% infestation of plants was discovered before blossom. The irregular dispersion of the black bean aphid on a few lands could have been caused by wind.
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