Fungus gnats are common insect pests on cut flower farms and can affect a wide range of crops. In our September issue of the Australian Flower Industry, the general biology and cultural management of fungus gnats were discussed.
In the second part of our series, Queensland Department of Agriculture, Fisheries and Forestry senior entomologist, Andrew Manners explains how predators and biopesticides can be used for the management and the control of fungus gnats.
There are a growing number of predators that are commercially available and are very effective if used correctly. All fungus gnat predators target larvae, the damaging stage, and include two species of predatory mites, one rove beetle, insect-killing nematodes and BT biopesticide products. As such, biological control of fungus gnats is very feasible and often more effective than the use of traditional pesticides.

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