Žiadosti o určenie príčiny poškodenia
Tu nájdete žiadosti o určenie príčiny poškodenia. Môžete si pozrieť žiadosti ostatných užívateľov a môžete ich triediť podľa zvolených kritérií. Môžete získať informáciu o vašej žiadosti a môžete sledovať priebeh jej riešenia. Ak sa stalo, že vaša žiadosť nebola schválená na riešenie, stalo sa tak pravdepodobne preto, lebo zaslané fotografie neumožňujú identifikáciu poškodenia, alebo pretože žiadosť sa netýka našej témy – identifikácia škodcov drevín a krov. O stave vašej žiadosti budete informovaný aj e-mailom.
Kód
Dátum pridania
Pridelené
Stav
Počet dní od podania
7515
7.3.2026
M. Zúbrik
Vybavené
0
7513
7.3.2026
M. Zúbrik
Vybavené
0
7474
1.3.2026
M. Zúbrik
Vybavené
11
7458
21.2.2026
michal.lalik@nlcsk.org
Vybavené
3
7456
20.2.2026
A. Kunca
Vybavené
4
7409
27.1.2026
R. Leontovyč
Vybavené
7
7407
27.1.2026
A. Kunca
Vybavené
7
7349
16.1.2026
R. Leontovyč
Vybavené
1
7341
14.1.2026
R. Leontovyč
Vybavené
1
7340
14.1.2026
A. Kunca
Vybavené
2
Zamietnuté žiadosti sa nezobrazujú. O zamietnutí žiadosti ste boli informovaný e-mailom.
Od: majo
Pridelené: M. Zúbrik
Krajina: Slovakia
Otázka
S pozdravom
Marián
Odpoveď
Ahoj Majo, myslím, že ten trus by mohol patriť ploskanke sadenicovej, ale obsolútne sa nedá vylúčiť zámena s nejakým príbuzným druhom. Pekný deň M. Zúbrik
Počet hlasov pre túto odpoveď: 0
Príčina poškodenia
Ploskanka sadenicová
Acantholyda hieroglyphica
Pridaj komentár: Ploskanka sadenicová
Od: gio
Pridelené: V. Longauerová
Krajina: Italy
Otázka
Odpoveď
Dear Gio, thank you for your request and picture.
Cherry leaf spot (Blumeriella jaapii) is an important disease in Europe and America. Bird cherry (Prunus avium) causes the greatest damage. Other host plants include cherry (Prunus cerasus), common apricot (Prunus armeniaca) and common peach (Prunus persica). The pathogen mainly attacks the leaf blades, but exceptionally it can also attack the stems and fruits.
Symptoms and harmfulnessParadoxically, unlike many other pathogens, cherry leaf spot primarily attacks older leaves. On the upper side of the leaf blade, distinctly red round spots of 1-2 mm in size are formed. On the underside of the leaf blade, smaller, sharply demarcated reddish-brown to dark brown spots are formed. They are covered with a fine coating of conidia. The spots on the lower and upper side of the leaf blade gradually become necrotic. The leaves gradually turn yellow, deform and subsequently fall.
When fruits are attacked, significantly darker, sharply demarcated spots appear on the fruits. Infested fruits are usually deformed.
The damage consists in the premature fall of the leaves, which reduces the photosynthetic activity of the tree. Trees have weaker growth, they are susceptible to environmental stress factors such as winter frosts or significant periods of drought. The pathogen results in a qualitative and, in particular, a quantitative reduction of the harvest. Spotting causes a huge problem in fruit nurseries or young plantings, where it slows growth and delays the fruiting period.
Development cycleThe pathogen overwinters on fallen leaves, from which the infection spreads in the spring in the form of ascospores. Ascospores are able to infect leaves, stems and fruits in the period of 3-4 weeks after flowering of cherries. The leaves are infected through the stomata and the first symptoms can be observed 2 weeks after infection. Depending on the weather, they are released into the environment for 4-5 weeks.
In addition to ascospore infection, conidia are the source of primary and secondary infection in many cases. Wet and rainy weather significantly promotes infection pressure. Infection can only occur if the leaf is wet. In the case of temperature, the optimum conditions for germination are in the range of 15-25 °C.
ProtectionThe basis of protection is, first of all, the selection of habitat, variety, and cultivation form. It is important to avoid cold and damp locations, where the conditions for the development of mottledness are optimal. Ensuring an airy and non-compacted crown is important from the point of view of shortening the time of wetness of the leaves and thus preventing the germination of ascospores and conidia. Similar to the case of apple scab, it is also advisable to dispose of the fallen leaves and thereby significantly reduce the infection pressure in the following growing season.
In the case of optimal weather conditions for the spread of the pathogen, it is advisable to carry out protection with fungicidal preparations 3-4 weeks after flowering. Preparations that contain the active substances mancozeb, fluopyram+trebuconazole, boscalid+paraclostrobin, dithianone have proven to be suitable. This treatment should be repeated after 10 days. If there is a long dry period during this period, there is no need to apply fungicides.
With best regards,
Valeria
Počet hlasov pre túto odpoveď: 0
Príčina poškodenia
Blumerielka čerešňová
Blumeriella jaapii
Pridaj komentár: Blumerielka čerešňová
Od: gio
Pridelené: M. Zúbrik
Krajina: Italy
Otázka
Odpoveď
Dear Gio, thank you for your request and picture. It appears to be a species from the genus Ceroplastes. There are at least four very similar species in your area: Ceroplastes rusci (Fig wax scale), Ceroplastes floridensis (Florida wax scale), Ceroplastes japonicus, and Ceroplastes sinensis (Chinese wax scale). All these species produce waxy coverings that look similar, and they are mainly found in the warmer parts of Europe, particularly in the Mediterranean region. Among these species, Ceroplastes japonicus, Ceroplastes rusci (Fig wax scale), and Ceroplastes floridensis (Florida wax scale) have been reported to infest hawthorn (Crataegus spp.) as a host plant. All of them are polyphagous, meaning they can feed on a wide variety of plants, including ornamental and fruit-bearing species like hawthorn. Identifying these species often requires a detailed examination of their physical characteristics, possibly using a microscope to examine the body structure beneath the wax. There is quite a lot of information about Ceroplastes japonicus on our website. Please visit this page: https://www.forestpests.eu/pest/ceroplastes-japonicus. With best regards, M. Zubrik
Počet hlasov pre túto odpoveď: 0
Príčina poškodenia
Červec japonský
Ceroplastes japonicus
Pridaj komentár: Červec japonský
Od: Elize Savage
Pridelené: M. Zúbrik
Krajina: United Kingdom
Otázka
Odpoveď
Dear Elize, thank you for a picture of Leptoglossus occidentalis. With best regards M. Zubrik
Počet hlasov pre túto odpoveď: 0
Príčina poškodenia
Obrubnica americká
Leptoglossus occidentalis
Pridaj komentár: Obrubnica americká
Od: majo
Pridelené: V. Longauerová
Krajina: Slovakia
Otázka
S pozdravom
Marián
Odpoveď
Ahoj Majo ,
podľa foto sa jedná o lesklokôrku plochú.
V.
Počet hlasov pre túto odpoveď: 0
Príčina poškodenia
Lesklokôrovka plochá
Ganoderma applanatum (= lipsiense)
Pridaj komentár: Lesklokôrovka plochá
Od: majo
Pridelené: A. Gubka
Krajina: Slovakia
Otázka
Odpoveď
Pravdepodobne je to larva roháča.
Počet hlasov pre túto odpoveď: 0
Príčina poškodenia
Roháč obyčajný
Lucanus cervus
Pridaj komentár: Roháč obyčajný
Od: Michal Zeman
Pridelené: M. Zúbrik
Krajina: Slovakia
Otázka
Poškodenie som ani neevidoval. Len su ich stovky a je ich plna dedina Velčice. Nie som si istý, ci sa ale jedna o tento druh, lebo tie naše sú oveľa menšie.
Odpoveď
Dobrý deň, ďakujeme za dotaz. Je to obrubnica americká Leptoglossus occindentalis. S pozdravom M. Zúbrik
Počet hlasov pre túto odpoveď: 0
Príčina poškodenia
Obrubnica americká
Leptoglossus occidentalis
Pridaj komentár: Obrubnica americká
Od: Albe
Pridelené: M. Zúbrik
Krajina: The Netherlands
Otázka
Odpoveď
Dear Albe, thanks for your inquiry. This is adults of Leptoglossus occidentalis, western conifer seed bug. Best regards M. Zúbrik
Počet hlasov pre túto odpoveď: 0
Príčina poškodenia
Obrubnica americká
Leptoglossus occidentalis
Pridaj komentár: Obrubnica americká
Od: Jer Nusse
Pridelené: M. Zúbrik
Krajina: The Netherlands
Otázka
Odpoveď
Dear Jer, thank you for your inquiry. In your photos, there are feeding galleries likely caused by Agrilus ater. However, it cannot be determined if this insect species caused tree mortality in this case. Best regards, M. Zúbrik
Počet hlasov pre túto odpoveď: 0
Príčina poškodenia
Krasoň topoľový
Agrilus ater
Pridaj komentár: Krasoň topoľový
Od: Adrian Schnierer
Pridelené: M. Zúbrik
Krajina: Slovakia
Otázka
Odpoveď
Dobrý deň, ďakujeme za dotaz. Na obrázku je hrčiarka Andricus caputmedusae. Túto efektnú hálku tvorí malá osička Cynips caputmedusae. Púčik sa pôsobením enzýmov vylučovaných larvou škodcu mení na „chlpatú“ hálku s množstvom výbežkov. Vo vnútri sa vyvíja larva. Nepatrí medzi hojné druhy. Hálka vydrží na strome viac rokov. Diplolepis rosae tvorí veľmi podobné hálky na ružiach. S pozdravom M. Zúbrik
Počet hlasov pre túto odpoveď: 0
Príčina poškodenia
Hrčiarka Andricus caputmedusae
Andricus caputmedusae
Pridaj komentár: Hrčiarka Andricus caputmedusae
Od: Martin
Pridelené: S. Rell
Krajina: Slovakia
Otázka
Škodca je aj na futbalovej bráne
Odpoveď
Dobrý deň,
je to ploštička lipová Oxycarenus lavaterae.
viac info:
https://www.skodcoviadrevin.sk/skodca/bzdocha-oxycarenus-lavaterae
Počet hlasov pre túto odpoveď: 0
Príčina poškodenia
Ploštička lipová
Oxycarenus lavaterae
Pridaj komentár: Ploštička lipová
Od: MARIE SOPHIE LAW
Pridelené: M. Zúbrik
Krajina: France
Otázka
One can see the little larva if we cut the galle in the middle
Odpoveď
Dear Marie, thank you for your inquiry. This is a gall caused by the small hymenopteran species Andricus quercuscalicis, known as the Knopper gall. The female of this small wasp lays eggs on the acorn cup in May, injecting a special liquid inside. As a result, the oak forms a specific neoplasm — a very irregular, approximately 2 cm long, green lump (gall) — in which the larva develops. The gall seems to overgrow the acorn cup and sometimes even absorbs the entire acorn. This prevents the acorn from developing normally and causes it to lose its ability to germinate. It can damage up to 70-80% of the harvest in localized areas. Damaged acorns fall off prematurely. With best regards, M. Zubrik
Počet hlasov pre túto odpoveď: 0
Príčina poškodenia
Hrčiarka kalichová
Andricus quercuscalicis
Pridaj komentár: Hrčiarka kalichová
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