Nemasys® Biological Leatherjacket Killer

Nemasys® Biological Leatherjacket Killer controls newly hatched larvae that attack grass roots resulting in slow growth and yellow patches on lawns.

Nemasys® Biological Leatherjacket Killer

Nemasys® Biological Leatherjacket Killer controls newly hatched larvae that attack grass roots resulting in slow growth and yellow patches on lawns.

Benefits

  • Effective natural control
  • Compatible with organic gardening
  • Easy to apply with a watering can or hose-end feeder
  • Harmless to wildlife and pets
Technical information

Details

General information

Name Nemasys Leatherjacket Killer
Ingredients 50 million S.FELTIAE
Active ingredient(s)Steinernema feltiae (90%)
FormulationPaste(PA)
Pack size50 million
Area treatedUp to 100 m2
CropsLawns
Pest activityYoung leatherjackets (larvae of Tipula spp., craneflies)
Rate of application500,000 nematodes per m2
Frequency of applicationTwo applications with a two to four-week interval
Time of applicationTwo weeks after a peak of craneflies (normally in August/September but can also occur in April/May)
Water volume0.5 litres per m2 on application. Water in with no less than 3 litres per m2 immediately after application

General information

Name Nemasys Leatherjacket Killer
Ingredients 50 million S.FELTIAE
Active ingredient(s)Steinernema feltiae (90%)
FormulationPaste(PA)
Pack size50 million
Area treatedUp to 100 m2
CropsLawns
Pest activityYoung leatherjackets (larvae of Tipula spp., craneflies)
Rate of application500,000 nematodes per m2
Frequency of applicationTwo applications with a two to four-week interval
Time of applicationTwo weeks after a peak of craneflies (normally in August/September but can also occur in April/May)
Water volume0.5 litres per m2 on application. Water in with no less than 3 litres per m2 immediately after application

Why Nemasys Leatherjacket Killer?

Leatherjackets are the soil-dwelling larvae of the crane flies commonly known as daddy longlegs. They are greyish-black, legless and with no distinct head. There are many species of daddy longlegs, but most tend to appear towards the end of August and lay their eggs within days. The Marsh Cranefly can also lay eggs in April/May. Once they hatch, around two weeks later, the legless creatures begin to feed on grass roots and stem bases, devastating lawns and plants. Secondary damage can occur from birds, badgers and foxes that may tear up the lawn to feed on the leatherjackets.

Nemasys® Biological Leatherjacket Killer is a safe and effective way to deal with a leatherjacket infestation, which can only be treated using biological methods in most of Europe.

Application

  • Apply to moist soil when soil temperature is above 10C
  • Use immediately on receipt of packs or refrigerate at 5C (do not freeze); use within expiry date (see inner sleeve of pack)
  • Avoid application in direct sunlight; nematodes are uv-sensitive, so apply on a dull day or in the evening
  • Cut the grass short before application and consider scarification in turf with excessive thatch
  • Use the entire pack and do not store stock solution or diluted product
  • Make a stock solution as directed on the label, making a paste in the first instance and then adding remainder of the water, to avoid lumps forming; this solution should be mixed thoroughly to ensure nematodes are well dispersed and kept agitated
  • Dilute stock solution in a watering can as detailed on label
  • Use a course rose on the can (pores >1.4 mm diameter) or a hose-end feeder (details on sleeve)
  • Water the lawn thoroughly after application to wash the nematodes into the soil and keep the soil moist for at least two weeks after application
  • For optimum results (covering a greater period of egg-laying) repeat after 2-4 weeks

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