Delayed action of an entomophagous nematode ( Heterorhabditis sp.) for grass grub control

  • Jackson T
  • Wouts W
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Abstract

The entomophilic nematode {IHeterorhabditis} sp. was applied to pasture in New Zealand for the control of the scarabaeid {ICostelytra} {Izealandica} at a rate of 0.5M/m2 on 11 January 1984. Six weeks after application, 9% of {IC}. {Izealandica} larvae were dead due to nematode infection, but nematodes had a negligible effect on the population 9 and 12 weeks after application. In January 1985, however, 14% of 1st- and 2nd-instar larvae were infected by nematodes and the population was signficantly reduced. In February, May and June 1985 the nematodes had spread throughout the site and 56% of larvae in an adjacent area were dead due to nematode infections

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Jackson, T. A., & Wouts, W. M. (1987). Delayed action of an entomophagous nematode ( Heterorhabditis sp.) for grass grub control. Proceedings of the New Zealand Weed and Pest Control Conference, 40, 33–35. https://doi.org/10.30843/nzpp.1987.40.9940

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