Effect of <i>Serratia entomophila</i> and diazinon applied with seed against grass grub populations on the North Island volcanic plateau

Authors

  • S.M. Zydenbos
  • R.J. Townsend
  • P.M.S. Lane
  • S. Mansfield
  • M. O?Callaghan
  • C. van_Koten
  • T.A. Jackson

DOI:

https://doi.org/10.30843/nzpp.2016.69.5919

Abstract

The bacterial biocontrol agent Serratia entomophila and the insecticide diazinon were applied as separate granular formulations with ryegrass seed and compared with a seedonly control treatment on three pastures of different ages and composition on the North Island volcanic plateau In the first 2 years diazinon and S entomophila significantly reduced healthy grass grub populations compared with the control However by the third year populations in the diazinon treatments had recovered and were significantly higher than in S entomophila or control plots Grass grub populations were reduced by disease outbreaks after S entomophila was applied which infected >40 of grass grub larvae in the treated plots in year two Bacterial extraction from soil a year after application confirmed establishment and persistence of S entomophila in treated plots Visual positive pasture growth responses were noted in both the S entomophila and diazinontreated plots

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Published

2016-01-08

How to Cite

[1]
Zydenbos, S., Townsend, R., Lane, P., Mansfield, S., O?Callaghan, M., van_Koten, C. and Jackson, T. 2016. Effect of &lt;i&gt;Serratia entomophila&lt;/i&gt; and diazinon applied with seed against grass grub populations on the North Island volcanic plateau. New Zealand Plant Protection. 69, (Jan. 2016), 86–93. DOI:https://doi.org/10.30843/nzpp.2016.69.5919.

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