Causal organism: Tipula spp.
Crane Fly larvae feed on the roots of grasses. Usually very little damage is done as plants have a remarkable ability to compensate for minor root damage. However, when populations are high (estimated to be about 25-30 larvae per square metre) damage to turf areas can be extensive.
The adult Crane Fly is found in the late summer and early autumn. It has long legs and resembles a large mosquito (body is about 1 inch long). The larvae, called Leatherjackets, live in the soil. They hatch from eggs laid in the late summer. They feed during the autumn and into the spring of the following year. They stop feeding in May. Damage generally becomes noticeable during the spring, caused by feeding that occurred the previous autumn and winter. Damage can also occur when birds scratch at the turf surface attracted to the larvae.
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Full approval for Acelepryn now covers control of Chafer grubs and Leatherjackets in sports pitches, golf greens, tees and fairways, golf roughs, racecourses and gallops, bowling greens, airfields, and professional application to commercial and residential lawns, subject to specific restrictions on the percentage of the area being treated.
Leatherjackets (causal organism: Tipula spp.) are the larvae of crane flies, also known as daddy-longlegs. Crane flies cause no damage to plants since the adults do not feed, however the young start feeding immediately. This causes the appearance of yellow patches and the ability to pull the turf up because there is little or no root growth. Nemasys J is made up of the beneficial nematode: Steinernema feltiae, which able to neutralise the larvae.
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