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Journal of Economic Entomology (1994) 87, 643-646

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Amy Suggars Downing (1994)
Effect of irrigation and spray volume on efficacy of entomopathogenic nematodes (Rhabditida: Heterorhabditidae) against white grubs (Coleoptera: Scarabaeidae)
Journal of Economic Entomology 87 (3), 643-646
Abstract: Infective juveniles of the entomopathogenic nematode Heterorhabditis bacteriophora Poinar (Cl strain) were applied to Kentucky bluegrass (Poa pratensis L.) to determine the effect of irrigation on efficacy against larvae of the Japanese beetle, Popillia japonica Newman, and the northern masked chafer, Cyclocephala borealis Arrow. Excellent control (>80%) was achieved with 1.25-5.0 billion nematodes per hectare when plots received irrigation before treatment application and again within 24 h after treatment application. When plots were not irrigated before treatment, results were inconsistent (range, 0-92% of the control). Two spray volumes (0.16 liters/m2 and 0.32 liters/m2) had no significant effect on nematode efficacy.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)


Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
environment/habitat manipulation
application technology


Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Popillia japonica Poa (crop)
Cyclocephala borealis Poa (crop)
Heterorhabditis bacteriophora/Photorhabdus (entomopathogen) Popillia japonica Poa (crop)
Heterorhabditis bacteriophora/Photorhabdus (entomopathogen) Cyclocephala borealis Poa (crop)