Trapping methods for vegetable insect pests.

Citation

Blatt, SE and Mlynarek, J. 2018. Entomopathogenic nematodes for carrot weevil control. 2018 Pest Management Research Report #08: 19-21.

Plain language summary

Entomopathogenic nematodes are an alternative option for control of carrot pests such as carrot weevil. There are commercially available products which have been minimally tested in Canada. This report documents the first use of two commercially available products for control of carrot weevil in Harrow, Ontario. Products tested were Steiner System and B-Green System, consisting of Steinernema feltiae and Heterorhabditis bacteriophora, respectively. Products were applied at two times early in the season and two times later in the season, to determine the best time to target the vulnerable life stage of the carrot weevil. With respect to control of carrot weevil, the early application of both products gave the best reduction in carrot weevil damage. Longevity of the products was evaluated by sampling the soil and placing waxworm larvae on the surface. Waxworm larvae are a favored host of many nematode species and this simple bioassay can provide information on the infectivity potential of the soil. Infectivity of the plots post product application ranged from 78-98% for up to 11 weeks. This report provides the first indication that these products can survive and remain infective under field conditions.

Abstract

not applicable

Publication date

2019-02-15

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