Eficacitatea combaterii larvelor de Clostera anastomosis L. la ieșirea din hibernare [Treatment efficacy of Clostera anastomosis L. caterpillars control in postdormancy phase]
Clostera anastomosis is an important poplar and willow defoliator which, especially since 1950, caused important damages to intensive hybrid poplar crops in Europe and Asia. The need to reduce the loss caused by this insect, often led to radical control tactics, consisting in spraying chemical i...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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”Ștefan cel Mare” University of Suceava, Faculty of Forestry and “Marin Drăcea” National Research-Development Institute in Forestry - Station Câmpulung Moldovenesc
2015-12-01
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| Series: | Bucovina Forestieră |
| Subjects: | |
| Online Access: | http://www.bucovina-forestiera.ro/arhiva/2015/15(2)/03_duduman_167-176.pdf |
| _version_ | 1811260046179303424 |
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| author | Duduman Mihai-Leonard Lupaștean Daniela Pînzanu Ștefan Ionuț Ilașcă Alexandra Dănilă Iulian Constantin |
| author_facet | Duduman Mihai-Leonard Lupaștean Daniela Pînzanu Ștefan Ionuț Ilașcă Alexandra Dănilă Iulian Constantin |
| author_sort | Duduman Mihai-Leonard |
| collection | DOAJ |
| description | Clostera anastomosis is an important poplar and willow defoliator
which, especially since 1950, caused important damages to intensive hybrid
poplar crops in Europe and Asia. The need to reduce the loss caused by this
insect, often led to radical control tactics, consisting in spraying chemical
insecticides with low specificity and high impact on biodiversity. Other control
methods (biological control) had not the expected effect. Considering
the above mentioned aspects and the fact that C. anastomosis overwinters as
larvae, mainly in bark crevices of the stems of infested trees, it was tested
the possibility of controlling this pest, by chemical control of the larvae,
early in spring. There were designed two trials in lab and in field, in order to
test the efficacy of 5 insecticides [Proteus (thiacloprid + deltamethrin), Ovipron
(horticultural oil), Nuprid (imidacloprid), Confidor (imidacloprid) and
Karate Zeon (lambda-cyhalothin)], sprayed directly on the stem of the poplar
trees colonized with overwintering larvae nests. The treatment efficacy
was assessed based on the survival rate of larvae after chemical spraying,
by comparing it to the control samples. All surviving larvae were trapped
in sticky barriers placed around the stems, above the sprayed area. Of the
tested insecticides, the most efficient was Confidor, causing mortality of the
90.2 ± 1.8% of the larvae, significantly higher than the rest of the tested insecticides
(Proteus, Ovipron, Nuprid). In field conditions, Confidor caused
the decrease of the larvae population with 78.2 ± 7.4% for poplar clone
AF2, and with 92.9 ± 6.4% for poplar clone AF8, and Karate Zeon caused
100% mortality. Control of the larvae in spring was efficient. It is a matter
of course that this control method will have a lower environmental impact
due to both the application moment (early spring, before poplars flush),
and high control of the sprayed area (only the lower section of the infested
tree stems). Successfull might be the application of mechanical control, by
trapping the overwintering larvae in sticky barriers |
| first_indexed | 2024-04-12T18:40:39Z |
| format | Article |
| id | doaj.art-7c3073bcb7654f8dbb7471c69b7dabb1 |
| institution | Directory Open Access Journal |
| issn | 1582-0769 1582-3725 |
| language | English |
| last_indexed | 2024-04-12T18:40:39Z |
| publishDate | 2015-12-01 |
| publisher | ”Ștefan cel Mare” University of Suceava, Faculty of Forestry and “Marin Drăcea” National Research-Development Institute in Forestry - Station Câmpulung Moldovenesc |
| record_format | Article |
| series | Bucovina Forestieră |
| spelling | doaj.art-7c3073bcb7654f8dbb7471c69b7dabb12022-12-22T03:20:47Zeng”Ștefan cel Mare” University of Suceava, Faculty of Forestry and “Marin Drăcea” National Research-Development Institute in Forestry - Station Câmpulung MoldovenescBucovina Forestieră1582-07691582-37252015-12-01152167176Eficacitatea combaterii larvelor de Clostera anastomosis L. la ieșirea din hibernare [Treatment efficacy of Clostera anastomosis L. caterpillars control in postdormancy phase]Duduman Mihai-Leonard0Lupaștean Daniela1Pînzanu Ștefan Ionuț2Ilașcă Alexandra3Dănilă Iulian Constantin4”Ștefan cel Mare” University of Suceava - Romania, Forestry Faculty, Applied Ecology Laboratory”Ștefan cel Mare” University of Suceava - Romania, Forestry Faculty, Applied Ecology Laboratory”Ștefan cel Mare” University of Suceava - Romania, Forestry Faculty, Applied Ecology Laboratory”Ștefan cel Mare” University of Suceava - Romania, Forestry Faculty, Applied Ecology Laboratory”Ștefan cel Mare” University of Suceava - Romania, Forestry Faculty, Applied Ecology LaboratoryClostera anastomosis is an important poplar and willow defoliator which, especially since 1950, caused important damages to intensive hybrid poplar crops in Europe and Asia. The need to reduce the loss caused by this insect, often led to radical control tactics, consisting in spraying chemical insecticides with low specificity and high impact on biodiversity. Other control methods (biological control) had not the expected effect. Considering the above mentioned aspects and the fact that C. anastomosis overwinters as larvae, mainly in bark crevices of the stems of infested trees, it was tested the possibility of controlling this pest, by chemical control of the larvae, early in spring. There were designed two trials in lab and in field, in order to test the efficacy of 5 insecticides [Proteus (thiacloprid + deltamethrin), Ovipron (horticultural oil), Nuprid (imidacloprid), Confidor (imidacloprid) and Karate Zeon (lambda-cyhalothin)], sprayed directly on the stem of the poplar trees colonized with overwintering larvae nests. The treatment efficacy was assessed based on the survival rate of larvae after chemical spraying, by comparing it to the control samples. All surviving larvae were trapped in sticky barriers placed around the stems, above the sprayed area. Of the tested insecticides, the most efficient was Confidor, causing mortality of the 90.2 ± 1.8% of the larvae, significantly higher than the rest of the tested insecticides (Proteus, Ovipron, Nuprid). In field conditions, Confidor caused the decrease of the larvae population with 78.2 ± 7.4% for poplar clone AF2, and with 92.9 ± 6.4% for poplar clone AF8, and Karate Zeon caused 100% mortality. Control of the larvae in spring was efficient. It is a matter of course that this control method will have a lower environmental impact due to both the application moment (early spring, before poplars flush), and high control of the sprayed area (only the lower section of the infested tree stems). Successfull might be the application of mechanical control, by trapping the overwintering larvae in sticky barriershttp://www.bucovina-forestiera.ro/arhiva/2015/15(2)/03_duduman_167-176.pdfClostera anastomosiscontrolpostdormance phase |
| spellingShingle | Duduman Mihai-Leonard Lupaștean Daniela Pînzanu Ștefan Ionuț Ilașcă Alexandra Dănilă Iulian Constantin Eficacitatea combaterii larvelor de Clostera anastomosis L. la ieșirea din hibernare [Treatment efficacy of Clostera anastomosis L. caterpillars control in postdormancy phase] Bucovina Forestieră Clostera anastomosis control postdormance phase |
| title | Eficacitatea combaterii larvelor de Clostera anastomosis L. la ieșirea din hibernare [Treatment efficacy of Clostera anastomosis L. caterpillars control in postdormancy phase] |
| title_full | Eficacitatea combaterii larvelor de Clostera anastomosis L. la ieșirea din hibernare [Treatment efficacy of Clostera anastomosis L. caterpillars control in postdormancy phase] |
| title_fullStr | Eficacitatea combaterii larvelor de Clostera anastomosis L. la ieșirea din hibernare [Treatment efficacy of Clostera anastomosis L. caterpillars control in postdormancy phase] |
| title_full_unstemmed | Eficacitatea combaterii larvelor de Clostera anastomosis L. la ieșirea din hibernare [Treatment efficacy of Clostera anastomosis L. caterpillars control in postdormancy phase] |
| title_short | Eficacitatea combaterii larvelor de Clostera anastomosis L. la ieșirea din hibernare [Treatment efficacy of Clostera anastomosis L. caterpillars control in postdormancy phase] |
| title_sort | eficacitatea combaterii larvelor de clostera anastomosis l la iesirea din hibernare treatment efficacy of clostera anastomosis l caterpillars control in postdormancy phase |
| topic | Clostera anastomosis control postdormance phase |
| url | http://www.bucovina-forestiera.ro/arhiva/2015/15(2)/03_duduman_167-176.pdf |
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