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Dead slug after infection <br/>(Photo: Becker Underwood)

Slug Biological Control:

Slugs are common pests of many horticultural crops, particularly soil grown plants and in nursery stock where small water snails are of equal importance.

Nemaslug (Phasmarhabditis hermaphrodita)

Swollen mantle on infected slug (left) and healthy slug (right). (Photo: Holt Studios) Type: Microscopic nematodes.

How it works:

Nematodes seek slugs and water snails, they enter the body and start to develop from infective juveniles to adults. In doing so a pellet of bacteria is released that begins to multiply spreading through the host body. Infected slugs are noticeable by the swollen mantle on their back, this ruptures a few days later releasing thousands of nematodes that seek to infect further hosts.

Species controlled:

Most slug species including Arion and Deroceras spp. and some snail species including those which are commonly found on nurseries.

When to use:

Almost any time of year when soil temperatures are between 5 and 30C. Soil moisture should not be a problem in commercial horticulture, unless the area dries up completely.

Rates of use:

Apply as a drench using conventional equipment, i.e sprayer, dilutor, watering can or through most irrigation equipment. In all cases remove any fine filters and ensure water temperature is between 5 and 15C.

Fargro CodePack Size
FGNEO30 million
Single application (6 weeks protection): 300,000 per m2. 30 million treats 100 m2, 250 million treats 833 m2.
Short duration crops or high pest population: 150,000 per m2. 30 million treats 200 m2, 250 million treats 1667 m2. Apply every 2-6 weeks depending on the pest pressure. 2 or 3 applications are recommended.
Outdoor crops with repeat applications: 50,000 per m2. 30 million treats 600 m2, 250 million treats 5000 m2. Apply every 2 to 4 weeks depending on pest pressure. A total of 3 applications are recommended.

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