LARVANEM

 

Unit of packaging

Heterorhabditis bacteriophora (entomopathogenic nematode)

LARVANEM pack size: blister in a box

Contains: 50 million larvae (third stage) in inert carrying material

Large LARVANEM pack size: 2 bags in a box

Contains: 2 x 250 million larvae (third stage) in inert carrying material

For United Kingdom, use LARVANEM-M (H. megidis)

 

Preparation of solution

• put the contents of the package into a bucket containing 5 litres of water (15-20°C/59-68°F)
• stir well and leave the solution to soak for 20-30 seconds
• stir well again and pour the entire content into spray tank
• fill up with the required amount of water
• spray immediately after preparation
• use the whole package at once, the distribution of nematodes in the pack is not homogenous!

 

Target

Larvae of various species of Curculionids, such as the vine weevil Otiorhynchus sulcatus. Larvae of Hepialus lupulinus.

 

Rates
LARVANEM	rate	m²/unit	interval (days)	frequency	remark
preventive	-	-	-	-	-
curative light	500.000/m²	100	-	1x	large pack size: 1000 m²/unit
curative heavy	1.000.000/m²	50	-	1x	large pack size: 500 m²/unit

 

Application and dose

• with a watering-can, irrigation system, knapsack or motorized sprayer
• to avoid blockage, all filters should be removed
• use a maximum pressure of 5 bar
• the spray nozzle opening should be at least ½ mm (500 micron)
• spread the spraying solution evenly over the area to be treated
• continuous mixing should take place to prevent nematodes sinking to the bottom of the spray tank
• water the crop before and after application
• keep the soil moist for the first 2 weeks after application

 

Environmental conditions

• the humidity content of the soil must be high
• soil temperature between 14-33°C/50-77°F

 

Storage and handling

• storage after receipt: see package for expiry date
• storage temperature: 2-6°C/36-42°F
• in the dark
• remove product from polystyrene outer for rapid cooling of content

 

Appearance

Larvae (third stage): size 0.6 mm

Other stages: develop inside host

 

Mode of action

The nematode enters the larva via mouth, anus or respiratory openings and starts to feed. This causes specific bacteria to emerge from the intestinal tract of the nematode. These spread inside the insect and multiply very rapidly. The bacteria convert host tissue into products which can easily be taken up by the nematodes. The weevil larva dies within a few days.

 

Visual effect

Infected larvae colour orange-red to red-brown.

 

Important!

The introduction rates of this product should be adjusted to the mode of action of the product and the results that can be expected in the crop where the product is applied. Your local Koppert consultant or recognized distributor will be able to advise you further.

 

Only use products that are permitted in your country / state and crop.