Abstract
Lymantria disparis one of the most dangerous, widespread forest pests. In most of its range this species gives periodic outbreaks of mass reproduction. Its polyphage caterpillars can eat about 300 plant species, but they cause special damage to birch plantations. Based on this, a number of studies on the distribution of the Lymantria disparhave been conducted in the Kyzylzharskoye forestry in the North Kazakhstan region: ac-counting, collection, analysis of all stages of pest development. Repeated outbreaks of pest activity were identified in researching territory in 3 zones: minor damage zone (the occurrence of foci less than 30 %), periodic intensive damage zone (31–70 %) and permanent damage (more than 70 %). Also pointed that prolonged drought for several years has a great influence on the duration of outbreaks of Lymantria disparmass reproduction. It confirmed by our records of increasing amount of pests in 2016 and 2017 years. With the aim of exterminating the pest and reducing the foci of infection of birch plantings with Lymantria dispar, CSI «Kyzylzharskoe forestry» carried out forest treatment with the biological preparation «Hercules–48 %». This drug belongs to the 3rd class of danger and is safe for people, warm-blooded animals, birds, bees and useful entomofauna.
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Claims 6
Claim · model-written summary
Repeated Lymantria dispar pest outbreaks occurred in three damage zones.
Not reportedTaxon
Verbatim
e0“Repeated outbreaks of pest activity were identified in researching territory in 3 zones: minor damage zone (the occurrence of foci less than 30 %), periodic intensive damage zone (31–70 %) and permanent damage (more than 70 %)”
Claim · model-written summary
The minor damage zone had outbreak foci below 30%.
Not reportedTaxon
Verbatim
e0“minor damage zone (the occurrence of foci less than 30 %)”
Claim · model-written summary
The periodic intensive damage zone had 31–70% damage.
Not reportedTaxon
Verbatim
e0“periodic intensive damage zone (31–70 %)”
Claim · model-written summary
The permanent damage zone had damage above 70%.
Not reportedTaxon
Verbatim
e0“permanent damage (more than 70 %)”
Claim · model-written summary
Prolonged drought was associated with the duration of Lymantria dispar mass reproduction outbreaks.
- Treatment
- prolonged droughte0
- Interactor
- Lymantria dispar
_Female_Dos.jpg?width=60)
Lymantria dispare0 - Outcome
- duration of outbreakse0
- Direction
- great influencee0
Not reportedTaxon
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Female_Dos.jpg?width=500)
Verbatim
e0“prolonged drought for several years has a great influence on the duration of outbreaks of Lymantria disparmass reproduction”
Claim · model-written summary
Pest numbers increased in 2016 and 2017.
Not reportedTaxon
Verbatim
e0“our records of increasing amount of pests in 2016 and 2017 years”