471. Poročilo o preskusu št.: LVG 2019-087 : opis vzorca: Pinus nigra, veja (z listi ali brez) ali poganjki : namen testiranja: sum na: Fusarium circinatumNikica Ogris, Barbara Piškur, 2019, izvedensko mnenje, arbitražna odločba Ključne besede: varstvo gozdov, morfološke analize, borov smolasti rak, Fusarium circinatum, Gibberella circinata, bor, Pinus
Objavljeno v DiRROS: 10.10.2019; Ogledov: 1465; Prenosov: 115 |
472. Poročilo o preskusu št.: LVG 2019-086 : opis vzorca: 11179535: Pinus sylvestris, les, lubje, sekanci, 11179542: Pinus sylvestris, les, lubje, sekanci : namen testiranja: sum na: Fusarium circinatumNikica Ogris, Barbara Piškur, 2019, izvedensko mnenje, arbitražna odločba Ključne besede: varstvo gozdov, morfološke analize, borov smolasti rak, Fusarium circinatum, Gibberella circinata, bor, Pinus
Objavljeno v DiRROS: 10.10.2019; Ogledov: 1545; Prenosov: 105 |
473. Poročilo o preskusu št.: LVG 2019-081 : opis vzorca: 10134986: Pinus sylvestris, veja (z listi ali brez) ali poganjki, 10134979: Pinus sylvestris, veja (z listi ali brez) ali poganjki : namen testiranja: sum na: 10134986: sum na: Fusarium circinatum, 10134979: sum na: Fusarium circinatumBarbara Piškur, Nikica Ogris, Zina Devetak, 2019, izvedensko mnenje, arbitražna odločba Ključne besede: varstvo gozdov, morfološke analize, borov smolasti rak, Fusarium circinatum, Gibberella circinata, Pinus sylvestris, rdeči bor, Diplodia pinea, sušica najmlajših borovih poganjkov
Objavljeno v DiRROS: 10.10.2019; Ogledov: 1636; Prenosov: 122
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474. Poročilo o preskusu št.: LVG 2019-085 : opis vzorca: Pinus sylvestris, veja (z listi ali brez) ali poganjki : namen testiranja: sum na: Fusarium circinatumNikica Ogris, Barbara Piškur, 2019, izvedensko mnenje, arbitražna odločba Ključne besede: varstvo gozdov, morfološke analize, borov smolasti rak, Fusarium circinatum, Gibberella circinata, bor, Pinus
Objavljeno v DiRROS: 10.10.2019; Ogledov: 1560; Prenosov: 111 |
475. Poročilo o preskusu št.: LVG 2019-098 : opis vzorca: Pinus strobus, veja (z listi ali brez) ali poganjki, št. enot 7 : namen testiranja: sum na: Fusarium circinatumBarbara Piškur, Nikica Ogris, Zina Devetak, Špela Jagodic, 2019, izvedensko mnenje, arbitražna odločba Ključne besede: varstvo gozdov, morfološke analize, borov smolasti rak, Fusarium circinatum, Gibberella circinata, bor, Pinus
Objavljeno v DiRROS: 10.10.2019; Ogledov: 1599; Prenosov: 263 |
476. Poročilo o preskusu št.: LVG 2019-109 : opis vzorca: Pinus sylvestris, veja (z listi ali brez) ali poganjki : namen testiranja: sum na: Fusarium circinatumNikica Ogris, Barbara Piškur, Zina Devetak, Špela Jagodic, 2019, izvedensko mnenje, arbitražna odločba Ključne besede: varstvo gozdov, morfološke analize, borov smolasti rak, Fusarium circinatum, Gibberella circinata, bor, Pinus
Objavljeno v DiRROS: 10.10.2019; Ogledov: 1551; Prenosov: 96
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477. Situation of Armillaria spp. and Heterobasidion spp. in SloveniaAna Brglez, Nikica Ogris, 2019, izvirni znanstveni članek Povzetek: Species of the genus Armillaria and Heterobasidion are among the most common causes of stem and root rot in Slovenia. Armillaria spp. infects deciduous and coniferous trees, while Heterobasidion spp. mainly threatens Norway spruce (Picea abies), pines (Pinus spp.), and silver fir (Abies alba). On the basis of the data about the sanitary felling of infected trees, we estimated the current state and calculated the proportions represented in total felling, total sanitary felling, total sanitary felling due to diseases, in wood stock, and in increments from 2013 to 2017. Since 2014, there has been a constant increase in the sanitary felling of deciduous and coniferous trees due to infections with Armillaria spp. In 2017, 32,849 m3 of timber were harvested due to Armillaria spp. Given the present situation, we assume that the amount of sanitary felling will continue to increase, but it will not account for large shares in wood stock or increment (< 1 %). In 2017, sanitary felling of infected conifers represented 27.6 % of all sanitary felling due to diseases. In the case of deciduous trees, the share was lower, i.e. 7.1 %. Armillaria spp. was the main cause of sanitary felling due to disease (51.9 %) in the Postojna forest management unit (FMU), while elsewhere shares of up to 10 % were recorded. With Heterobasidion spp., the amount of felling is decreasing over the years. In 2017, 33,922 m3 of wood, accounting for 15.7 % of the total sanitary felling due to disease, were felled due to Heterobasidion spp. A comparison of the felling of Norway spruce, silver fir, and Scots pine due to Heterobasidion spp. shows the different proportions of felling within the total sanitary felling due to the diseases. In Norway spruce, it is on average 79.5 %, in silver fir 12.9 %, and in Scots pine 34.3 %. We assume that the volume of timber harvested due to Heterobasidion spp. will gradually decrease over the years due to the lower wood stocks of Norway spruce, which has recently been hit by numerous natural disasters and infestation of bark beetles. However, the incidence will be higher due to climate change affects.
Objavljeno v DiRROS: 30.08.2019; Ogledov: 2908; Prenosov: 1135
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478. Pseudodidymella fagi in Slovenia : first report and expansion of host rangeNikica Ogris, Ana Brglez, Barbara Piškur, 2019, izvirni znanstveni članek Povzetek: The fungus Pseudodidymella fagi is spreading in Europe and causing leaf blotch of European beech, Fagus sylvatica. Between 2008 and 2017, outbreaks of P. fagi were observed on European beech in Switzerland, Germany (also on F. orientalis), Austria, and Slovakia. In Slovenia, leaf blotch symptoms were first observed on F. sylvatica in 2018. P. fagi was identified as the causal agent of the observed symptoms in Slovenia by morphological examinations together with sequencing of the internal transcribed spacer (ITS) region of the rDNA. This study links the fungus to the expansion of the known distribution of the disease to Slovenia, and based on in vitro pathogenicity trials, also to a new potential host, Quercus petraea. The pathogenicity tests confirmed F. sylvatica and F. orientalis as hosts for P. fagi, but not Castanea sativa, where pathogenicity to F. orientalis was proved for first time in vitro. Although Koch%s postulates could not be proven for C. sativa, it seems to be partially susceptible in vitro because some of the inoculation points developed lesions. Additionally, damage to Carpinus betulus related to P. fagi near heavily infected beech trees was observed in vivo but was not tested in laboratory trials. Based on the results and our observations in the field, it is likely that P. fagi has a wider host range than previously thought and that we might be witnessing host switching.
Ključne besede: Pycnopleiospora fagi, leaf blotch, pathogenicity test, inoculation test, Fagus orientalis, Fagus sylvatica, Quercus petraea, mycopappus-like propagule, Carpinus betulus, host switching
Objavljeno v DiRROS: 23.08.2019; Ogledov: 2455; Prenosov: 1540
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479. Poročilo o preskusu št.: LVG 2019-080 : opis vzorca: Fagus sylvatica, listi : namen testiranja: sum na: Pseudodidymella fagiNikica Ogris, 2019, izvedensko mnenje, arbitražna odločba Ključne besede: varstvo gozdov, morfološke analize, Pseudodidymella fagi, rjava pegavost bukovih listov, bolezen listja, navadna bukev, Fagus sylvatica, Pycnopleiospora fagi
Objavljeno v DiRROS: 23.08.2019; Ogledov: 2338; Prenosov: 130
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480. Poročilo o preskusu št.: LVG 2019-077 : opis vzorca: Pinus sylvestris, les, lubje, sekanci : namen testiranja: sum na: Fusarium circinatumBarbara Piškur, Špela Jagodic, Nikica Ogris, 2019, izvedensko mnenje, arbitražna odločba Ključne besede: varstvo gozdov, morfološke analize, borov smolasti rak, Fusarium circinatum, Gibberella circinata, Pinus sylvestris, rdeči bor
Objavljeno v DiRROS: 12.08.2019; Ogledov: 1825; Prenosov: 119
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