Comparison of Ips duplicatus (Sahlb.) infestation of insecticide sprayed and injected standing trap trees

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F22%3A43922101" target="_blank" >RIV/62156489:43410/22:43922101 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.26202/sylwan.2022009" target="_blank" >https://doi.org/10.26202/sylwan.2022009</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.26202/sylwan.2022009" target="_blank" >10.26202/sylwan.2022009</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Comparison of Ips duplicatus (Sahlb.) infestation of insecticide sprayed and injected standing trap trees

Popis výsledku v původním jazyce

At present, I. duplicates (Sahib.) creates extensive outbreaks in the Czech Republic. Established methods used to protect against Ips typographus (L.) and check its spread, are not effective against Ips duplicates. The aim of the survey was to verify the possibility of protecting forest against I. duplicates by using chemical treatment or by injecting protected standing spruce trap trees. Thirty-four trees inside an area with an outbreak of I, duplicates (East Czech Republic) were randomly chosen in a stand of spruce. The stems of 10 spruces (i) were treated with alfa-cyperme-thrin insecticide up to a height of 4 m and a device for collecting dead bark beetles was attached to these trap trees. Eight spruces (ii) were injected with imidacloprid (1% solution), and the rest of the trees (iii) were used as a control. Pheromone lures were applied on these trees, with two items on every type of trap tree. Five naturally infested trees I. duplicates located outside the area of influence of the pheromone lure were included in the analysis (hi). Infestation of the spruce trees was calculated from the density of entry holes on the stem (i, iii, iv) or the number of collected dead bark beetles (ii). Naturally attacked trees had the highest density of entry holes. Standing trap trees treated with alpha-cypermethrin had a lower infestation density than injected trees. The pheromone lure attracted I. duplicates to the bottom of the stem, away from the naturally infested crown section. Treatment with insecticide to a height of 4 m was insufficient, because varying infestation rates of standing trap trees ranged from thousands to just a few individuals of bark beetle adults. These standing trap trees were also infested in the treated section. The dispersion of the infested trees within the group was uneven. Injection by imidacloprid had a low efficacy in protecting trees against development of a new generation of bark beetle.

Název v anglickém jazyce

Comparison of Ips duplicatus (Sahlb.) infestation of insecticide sprayed and injected standing trap trees

Popis výsledku anglicky

At present, I. duplicates (Sahib.) creates extensive outbreaks in the Czech Republic. Established methods used to protect against Ips typographus (L.) and check its spread, are not effective against Ips duplicates. The aim of the survey was to verify the possibility of protecting forest against I. duplicates by using chemical treatment or by injecting protected standing spruce trap trees. Thirty-four trees inside an area with an outbreak of I, duplicates (East Czech Republic) were randomly chosen in a stand of spruce. The stems of 10 spruces (i) were treated with alfa-cyperme-thrin insecticide up to a height of 4 m and a device for collecting dead bark beetles was attached to these trap trees. Eight spruces (ii) were injected with imidacloprid (1% solution), and the rest of the trees (iii) were used as a control. Pheromone lures were applied on these trees, with two items on every type of trap tree. Five naturally infested trees I. duplicates located outside the area of influence of the pheromone lure were included in the analysis (hi). Infestation of the spruce trees was calculated from the density of entry holes on the stem (i, iii, iv) or the number of collected dead bark beetles (ii). Naturally attacked trees had the highest density of entry holes. Standing trap trees treated with alpha-cypermethrin had a lower infestation density than injected trees. The pheromone lure attracted I. duplicates to the bottom of the stem, away from the naturally infested crown section. Treatment with insecticide to a height of 4 m was insufficient, because varying infestation rates of standing trap trees ranged from thousands to just a few individuals of bark beetle adults. These standing trap trees were also infested in the treated section. The dispersion of the infested trees within the group was uneven. Injection by imidacloprid had a low efficacy in protecting trees against development of a new generation of bark beetle.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

40102 - Forestry

Projekt

<a href="/cs/project/QK1920433" target="_blank" >QK1920433: Vliv obranných opatření na populace lýkožroutů v závislosti na populačních hustotách</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Sylwan

ISSN

0039-7660

e-ISSN

—

Svazek periodika

166

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

PL - Polská republika

Počet stran výsledku

12

Strana od-do

171-182

Kód UT WoS článku

000813574000001

EID výsledku v databázi Scopus

2-s2.0-85138537883