Abstract
Field trials, involving winter and spring oilseed rape, were carried out during the 2009 and 2010 cropping seasons to investigate the sensitivity of pollen beetle (Meligethes aeneus F.) to the insecticides, belonging to different classes (pyrethroids, neonicotinoids and organophosphates) as well as the efficacy of different dose rates of Karate zeon 5 CS (a.i. λ-cyhalothrin) against pollen beetles. All the insecticides used in winter and spring rape significantly reduced the number of pollen beetles 1–3 days after application, compared with the untreated plots; however, the sensitivity of pollen beetles to the tested insecticides in the field conditions was similar, significant differences among the applied insecticides were not observed. It was determined that the recommended field dose rate of the insecticide Karate zeon and its double and quadruple dose rates did not kill all pollen beetles in the field conditions (efficacy <100%). This implies that the application of Karate zeon in the field conditions in Dotnuva resulted in the development of partial resistance to λ-cyhalothrin in the population of pollen beetles.
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Claims 4
Claim · model-written summary
All insecticides significantly reduced beetle counts against untreated plots.
- Taxon
- rape
_Brassica_napus_-_Habit.jpg?width=60)
Brassica napuse0 - Treatment
- All the insecticidese0
- Interactor
- pollen beetles
Meligethese0pest - Outcome
- number of pollen beetlese0
- Direction
- reducede0
- Comparator
- the untreated plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
e0“All the insecticides used in winter and spring rape significantly reduced the number of pollen beetles 1–3 days after application, compared with the untreated plots”
Claim · model-written summary
Field beetle sensitivity was similar across insecticides.
- Taxon
- oilseed rapeBrassica napuse1
- Interactor
- pollen beetlesMeligethese0pest
- Outcome
- sensitivity of pollen beetlese0
- Direction
- similare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the sensitivity of pollen beetles to the tested insecticides in the field conditions was similar, significant differences among the applied insecticides were not observed”
e1“winter and spring oilseed rape”
Claim · model-written summary
Even quadruple Karate zeon doses did not kill all beetles.
- Taxon
- oilseed rapeBrassica napuse1
- Treatment
- the insecticide Karate zeone0
- Interactor
- pollen beetlesMeligethese0pest
- Outcome
- pollen beetlese0
- Direction
- did not kill alle0
- Value
- efficacy <100%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the recommended field dose rate of the insecticide Karate zeon and its double and quadruple dose rates did not kill all pollen beetles in the field conditions (efficacy <100%)”
e1“winter and spring oilseed rape”
Claim · model-written summary
The authors inferred partial resistance to λ-cyhalothrin at Dotnuva.
- Taxon
- oilseed rapeBrassica napuse1
- Interactor
- pollen beetlesMeligethese0pest
- Outcome
- partial resistance to λ-cyhalothrin in the population of pollen beetlese0
- Setting
- Dotnuvae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This implies that the application of Karate zeon in the field conditions in Dotnuva resulted in the development of partial resistance to λ-cyhalothrin in the population of pollen beetles”
e1“winter and spring oilseed rape”
The same questions in other papers
insecticide · Meligethes · Brassica napus (oilseed rape)Results agree
1 paper in the same direction as this paper
- positive
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.