![]() ![]() “But it’s highly likely populations are lower this season, and the reported cranefly hatch of Autumn 2022 reflected that, with course managers reporting lower amounts of cranefly sightings than the previous three years. “This doesn’t mean complete reduction – these are insects that have evolved over thousands of years to cope with different climates and survive around the world In many different climates. Droughts may have led to higher mortality rates of the leatherjacket larvae in unirrigated areas. He said: “Heat and droughts were at record highs in summer 2022. We asked Glenn Kirby, technical support at Syngenta for Europe, to give us an overview of how the industry is currently seeing the leatherjacket and chafer grub issue this year. ![]() The weaker turf and natural food source also makes the turf very vulnerable to damaging bird and animal foraging. Typically, leatherjackets thrive on heavier clay dominated soils and cause damage mainly to greens, while chafer grubs prefer free draining sand dominated surfaces and can cause damage to wide areas of the golf course such as fairways and roughs.īoth feed on the roots of the grass plant, meaning the turf can’t take up nutrients and can cause it to weaken or even dieback. Leatherjackets are the larvae of the crane fly, while chafer grubs are the larvae of the chafer beetle. ![]() What are leatherjackets and chafer grubs? They can make their presence really known just as our club competition seasons get into gear but what’s on the cards for 2023? And is there anything your hard-working greenkeeping teams can do to combat them? GCMA Insights delved in to find out… A 2020 survey from turf experts Syngenta revealed that – of the 400 courses managers who responded – only one per cent of their layouts had reported no damage from the insects. But though the damage from the numbers of leatherjackets was severe, it was by no means a one-off. ![]()
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