Tipula paludosa, T. oleracea
Leatherjacket larvae are the immature stage of the European Marsh Crane Fly. They are tough-skinned, light-grey or greenishbrown with irregular black specks, 3 to 4 cm (1.2 to 1.6 inches) long and live in the soil throughout the fall and winter.
During the day, Leatherjackets feed on grass roots and crowns in the upper 3 cm (1.2 inches) of soil. They emerge to feed on grass leaves and stems at night. If the upper soil dries, these larger larvae migrate to deeper soil. They feed in spring through to early-summer when they form a pupa, emerging in late-summer or early-fall as adult Crane Flies.
The decision to take control measures is better made in the spring because late-summer drought or a severe winter may sufficiently reduce the Leatherjacket population. A well-maintained turf is able to withstand a mild infestation so control measures may not be justified. Higher numbers (greater than 270 larvae/m2) will likely cause turf damage.
• Patches of dead grass.
• Turf begins to thin and die back.
• Improve drainage conditions.
• Avoid irrigating a dry lawn in the fall if you suspect a Leatherjacket infestation.
• Apply an insecticide to the affected area.
Aug8WedAugust 8, 2018
Brian Rosenberg has been named the new Head of Bayer Environmental Science Canada effective August 1, 2018.
May15TueMay 15, 2018
May11FriMay 11, 2018
The premier educational and networking event for golf course superintendents will accept 50 elite members for its 2018 class
May10ThuMay 10, 2018
Bayer is pleased to announce the appointment of Jon Albert as Territory Sales Manager Technical for the Canadian Golf Market. Jon will be responsible for providing technical information and support to golf courses in Eastern Ontario and the province of Quebec.