Foliar applied entomopathogenic nematodes Steinernema feltiae are not suitable for controlling Thrips tabaci in leek

Bert Beck, Pieter Spanoghe, Maurice Moens, Sabien Pollet, Femke Temmerman, David Nuyttens

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Two field trials in leek were set up to determine and, if possible, improve the effect of spray applications of Steinernema feltiae(Filipjev) Wouts, Mracek, Gerdin et Bedding against Thrips tabaci Lindeman. The first trial focused on selecting a suitable applicationtechnique and on testing the effect of an attractant on thrips control in leek. The second trial focused on incorporating entomopathogenicnematodes (EPN) in a conventional insecticide scheme, and on the effect of mixing a surfactant in the spray suspension.S. feltiae proved to be ineffective against the foliar inhabiting life stages of T. tabaci, despite adding a surfactant and/oran attractant to the spray suspension and despite adapting the equipment. Compared with a traditional spray boom, a row applicationtechnique ensured a more even EPN deposition on the upper side and underside of both old and new leek leaves. This techniquemay improve the applications of fungicides and contact insecticides in leek.
TaalNederlands
TijdschriftBulletin of Insectology
Volume68
Exemplaarnummer2
Pagina's (van-tot)287-298
ISSN1721-8861
StatusGepubliceerd - dec-2015

Trefwoorden

  • B390-gewasbescherming
  • entomopathogene nematoden
  • thrips
  • spray application

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