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.
Safe for turf and wildlife
Kills larvae within 10 - 14 days
One tray treats 500 m²
Stops larvae feeding within three days of infection
Type Biological insecticide
Pack Size Tray of 250 million nematodes
Pack Coverage 500m2
Contains Beneficial nematode: Steinernema feltiae
Nemasys J targets young Leatherjacket larvae feeding close to the soil surface when the temperature is above 10oC.
Nemasys J should be applied and watered into the turf about a week after the adult crane fly have been seen.
This is usually from August to September, this is the best time to apply nematodes as the soil is usually around 12oC.
|1 tray per 500m2
|50L water per 500m2
|Maximum number of treatments
|1 per year
Use the entire pack contents at one time, do not split or subdivide individual packs as each contains a measured dose of nematodes.
Once received, the transport box should be opened and refrigerated at between 2oC and 5oC for up to a maximum of 4 weeks.
Do not freeze as forming ice crystals will rupture the nematodes. Do not to use the product if past the expiry date or if it as been incorrectly stored.
Recommended period of use