|
|
Vyhodnocení výskytu patogenů jabloně na lokalitě Lysice
Pavlíčková, Kristýna
In the Czech Republic and around the world are the most commonly grown fruit trees, apple trees. The yield and also its quality is dependent on the weather, location, but also largely on the proper protection against harmful organisms. The thesis contains an overview of the most important viral, bacterial and fungal pathogens, mainly the work is focuses on the agent of apple scab, Venturia inaequalis. In the locality Lysice were evaluated attacked three major fungal pathogens: Venturia inaequalis, Podosphaera leucotricha and Monilinia fructigena, on the varieties ´Idared´, ´Jonagold´, ´Rubín´ and ´Šampion´. The attack of leaves by agent of the apple scab was the most evident in the varieties ´Rubín´ and ´Jonagold´ for which was established middle occurrence class of pathogen. The attack of fruits was minimal, because protection was made correctly. For all varieties was evaluated high frequency of apple powdery mildew, while primary infection (15 to 53 % of monitored leaves). Due to the application of chemical protection were secondary infections weaker (19 to 37 % of monitored leaves) than primary infections. By Monilinia fructigena was the most attacked variety ´Rubín´ (56 % of monitored fruits). The variety ´Rubín´ was the most sensitive for all the evaluated pathogens. For particular pathogens was devised suitable protection system.
|
|
|
Hodnocení výskytu patogenů kdouloně (Cydonia Mill.) na lokalitě Žabčice
Zelinková, Hana
The quince is on of untraditional timber species of Czech Republic, that is more seriously studied in last few years. This studies are focused mainly to quince varieties and cultivation. However the sufficient information about diseases of quince is still missing. The description of quince, its cultivation and utilisation is described in this bachelor thesis. The appearence of fire blight of apple and pear (Erwinia amylovora) and apple brown rot (Monilinia fructigena) was observed and assessed at the university orchard in Žabčice. For the leaf blight of hawthorn (Etomosporium mespili) was estimated the intensity of leave descent for each quince variety. The descent of fire blight of apple and pear was most considerable on the varieties 'Kocúrová' and 'Ironda' (100 %), obversely on varieties 'Ukrajinská', 'Úspěch', 'Triumph', 'Šuranská', 'Pinter' and 'Morava' the descent wasn't observed. The microscopic measurement of Monilia genus funghi and E. mespili pathogen conidiums size was realized. The Monilia funghi present on quince was indentified as M. fructigena according to this measurements.
|
guest ::
