NDLI: Field efficacy of deltamethrin in reducing damage caused by Thrips tabaci Lindeman (Thysanoptera: Thripidae) on early white cabbage

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Field efficacy of deltamethrin in reducing damage caused by Thrips tabaci Lindeman (Thysanoptera: Thripidae) on early white cabbage

Content Provider	Springer Nature Link
Author	Trdan, Stanislav Valič, Nevenka Žnidarčič, Dragan
Copyright Year	2007
Abstract	Our research assessed how the number of sprayings with deltamethrin influenced the efficiency against onion thrips, Thrips tabaci, on early white cabbage. The study was performed in 2002 and 2005 using the early white cabbage cultivar Parel, which is very susceptible to the attack of onion thrips. The cabbages were planted in a block-design experiment, with percentage of damage on the exterior leaves recorded according to the positions of the leaves (i.e. outer to inner). Although the attack of thrips was much greater in 2002 than in 2005, nevertheless, control plants in both years showed much more damage than plants with at least one insecticide spraying. In 2002, there was little difference between one and two sprayings, but three sprayings showed a significantly improved result. However, three sprayings of this insecticide is generally not permitted in farming practice. In 2005, no differences in efficacy among one, two and three sprayings were recorded. We also assessed a high threshold (up to 10% damaged leaf surface) and low threshold (up to 1% damaged leaf surface) for the removal of damaged leaves. In 2002, both thresholds were exceeded for control plants, but in 2005, the attack of thrips was mild enough that neither threshold was exceeded. In this case, one spraying was sufficient to reduce leaf damage below the higher (more tolerant) threshold, but three sprayings were needed to reduce leaf damage below the lower (more stringent) threshold. Therefore, in Slovenia or other parts of the world with similar climatic conditions, we recommend one spraying as broadly effective and recommend the more tolerant threshold for leaf removal.
Starting Page	217
Ending Page	223
Page Count	7
File Format	PDF
ISSN	16124758
Journal	Journal of Pest Science
Volume Number	80
Issue Number	4
e-ISSN	16124766
Language	English
Publisher	Springer-Verlag
Publisher Date	2007-08-01
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Damage threshold Deltamethrin Early white cabbage Onion thrips Thripidae Forestry Ecology Plant Sciences Plant Pathology Agriculture
Content Type	Text
Resource Type	Article
Subject	Ecology Plant Science Ecology, Evolution, Behavior and Systematics Insect Science Agronomy and Crop Science

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Biological control of the onion thrips, Thrips tabaci Lindeman (Thysanoptera: Thripidae), in open fields using Egyptian entomopathogenic nematode isolates

Formulation for foliar and soil application of entomopathogenic nematodes for controlling the onion thrips Thrips tabaci Lindeman (Thysanoptera: Thripidae)

Management of thrips, Thrips tabaci (Lindeman) [Thysanoptera: Thripidae] through botanicals in onion

Effect of entomopathogenic fungi, Beauveria bassiana and Metarhizium anisopliae, on Thrips tabaci Lindeman (Thysanoptera: Thripidae) populations in different onion cultivars

Effect of different plant extracts and nanoparticles on Thrips tabaci (Lind.) (Thysanoptera: Thripidae) under field conditions and their allelopathic potential on the onion, Allium cepa L. using bioassays and RAPD analysis

DAMAGE CAUSED BY ONION THRIPS Thrips tabaci THYSANOPTERA THRIPIDAE TO ONION Allium cepa CROP WITH SPECIAL REFERENCE TO THEIR BIOLOGICAL CONTROL IN ALIGARH REGION

EVALUATION OF FUNGAL PATHOGENS AGAINST ONION THRIPS, Thrips tabaci LINDEMAN (THYSANOPTERA: THRIPIDAE)

Behavioral responses of Thrips tabaci Lindeman to endophyte-inoculated onion plants

Relationships between insect predator populations and their prey, Thrips tabaci, in onion fields grown in large-scale and small-scale cropping systems

Field efficacy of deltamethrin in reducing damage caused by Thrips tabaci Lindeman (Thysanoptera: Thripidae) on early white cabbage

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Biological control of the onion thrips, Thrips tabaci Lindeman (Thysanoptera: Thripidae), in open fields using Egyptian entomopathogenic nematode isolates

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