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Možnosti využití přírodních insekticidů
Malec, Josef
Botanical insecticides are naturally occurring chemicals synthesized by plants for defend against herbivores. The aim was to verify the possibility of using natural insecticides to protect of cherries against cherry fruit fly (Rhagoletis cerasi L., 1758). In 2016, was evaluated the efficacy of three natural insecticides (spinosad, azadirachtin, pyrethrins) in the cherry orchards near the village of Bílé Podolí in the district of Kutná Hora (240 m a. s. l.). Their efficacy was compared with a synthetic insecticide (acetamiprid) and an untreated control. Insecticides were applied by cherry fruit fly adults caught on yellow sticky plates. Efficacy was evaluated in two periods, one week after the last treatment and during harvest maturity (June 23). Maximal efficacy of 100% was found after application of Piretro Verde (pyrethrins), and the product Mospilan (acetamiprid). Efficacy of preparation Spintor Fly (spinosad) was 95.83%, of preparation Neem Azal TS (azadirachtin) in combination with a food attractant was 83.33%. All used natural insecticides have shown efficacy in protection of cherries against cherry fruit fly.
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Hmyzí škůdci zahrady v intravilánu města Brna
Langová, Melanie
During the year 2018, the occurrence of pests was monitored in the garden by pheromone traps for Cydia funebrana and Cydia molesta, by yellow spheric traps for Rhagoletis cerasi. For the other species of pests, visual inspection was chosen. The flight period of Cydia funebrana started on 1st May. The flight achieved its maximum during period, which lasted from 27th to 30th June. The last individual was found on 7th September. Totally 114 individuals were caught. The first individual of Cydia molesta was registered on 28th April. The maximum flight was from the 9th to 12th June and the last individual was found on 10th September. Totally 126 individuals were caught. The flight period of Rhagoletis cerasi started on 13th May and maximum was reached from the 10th to 17th June. Totally 87 individuals were caught. On 19th April some species of aphids on different woods were found, Brachycaudus helichrysi, Aphis grossulariae, Cryptomyzus ribis and Aphis pomi.
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Možnosti ochrany proti vrtuli třešňové
Říhová, Petra
This thesis contains a short description of the Prunus avium L. its cultivation needs, pomological divergence and training systems. The main task of this thesis is focused on to the Rhagoletis cerasi. Taxonomy, bionomy, morfological description and spread of this pest. Part of the thesis is about natural antagonists and predators in context to the organic production. Description of the legislation and terms for organic production. Protection suggestions in this system against Rhagoletis cerasi L. The experimental part of this thesis was focused on to the efficiency confirmation of the selected organic friendly treatment products. Experiment was done on the Kordia variety of cherry Prunus avium L. in the orchard located in the Biele Karpaty region of the western Slovakia. There was low occurrence on the untreated variant in the time of sample colection. This might affect final results of this experiment.
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