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Chafer Beetle Larvae damage in lawns

Chafer Beetle Larvae Damaged LawnThe grass and lawn growing conditions out there currently are ideal for lawn pests and the hungry Chafer Bettle Larvae will now be feeding on your grass roots, getting fatter by the day.

The picture shows the damage that Badgers and large birds can do to a lawn area. The adults of the common Garden Chafer Beetle would have laid their eggs in the mid to late summer of last year and now these eggs have hatched. Chafer Beetle live in the soil for up to three years so you can easily have three generations in the soil at any one time making control measures difficult.

If you do not control them, they will quickly strip a lawn as no grass or garden plants can grow without any roots. There are biological nematodes available from Green Gardener which can be applied when the larvae are young. They state that the soil temperature needs to be a steady 12 degrees for the nematodes to work. They literally eat their way into the larvae - after all they are parasitic worms.

The grubs lay dormant deep in the ground before moving to the surface the following spring to emerge as beetles in May / June and starting the process again. As only the newly hatched grubs are susceptible to nematodes, there is only one opportunity a year to kill them using Nemasys biological control i.e. between August - early October when the grubs are newly hatched, near the surface and the soil temp is 12C.

Should you need control in the spring time, which is the best time to save the lawn and make effective repairs we suggest the application of Bayer Provado which is applied as a foliar blanket spray. This means treat all your lawns to gain control of the larvae. If you miss one lawn, the bugs will not be controlled.

It contains a powerful unique systemic insecticide for the control of Chafer grubs and Leatherjackets and is applied May to August. It will not kill the eggs so more than one application per annum may be required.

Make sure the insects are dead before you think about renovating the lawn. This may involve mowing low, scarification, aeration, over seeding and top dressing.

There is little point repairing a lawn until the insects are dead otherwise if they are still in the soil, they are still a food source for badgers, foxes and birds. Even the dying larvae are tasty. The chemical works by disrupting the thought process of feeding - it tells the larvae to stop feeding with their ultimate death following some time soon.

Related TopicsLawn Renovation
Chafer Beetle Larvae Control
Leatherjacket Larvae Control
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