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    Nemasys® L – advanced biological control in ornamentals

    Nemasys® L is based on the beneficial nematode Steinernema kraussei and provides a rapid curative control of Black Vine Weevil. Nemasys® L has the added advantage of being cold temperature tolerant and will control Black Vine Weevil larvae in soil temperatures down to 41°F. This means it will infect and kill Black Vine Weevil larvae whenever they are active in the soil.

    The benefits of Nemasys® L for horticulture
    No pest resistance issues
    Compatible as a tank mix partner in IPM programs
    Rapid knockdown
    Very robust, long persistence and survival of beneficial nematodes in testing conditions
    Safe for the applicator and field workers

    Nemasys® L contains nematodes in their vigorously infective juvenile stage. These aggressive organisms actively seek out Black Vine Weevil larvae and enter them through their natural openings. Once inside the larvae they release symbiotic bacteria, quickly killing the insect pest. The nematodes then reproduce inside the insect and release a new generation of infective juveniles which disperse in search of further larvae.

    Nemasys® L is a very robust nematode and can withstand higher environmental pressures than other nematode species; this makes it the product of choice when controlling Black Vine Weevil in field and testing conditions.

    How to use

    In peat free media / coir:
    Apply anytime when soil temperatures are above 5°C. Late autumn applications are very effective at controlling Black Vine Weevil populations since all the eggs will have hatched and larvae can be controlled before damage to the plant.


    *Nemasys® L is not offered for sale in all countries. Contact your local BASF team for availability in your area. Use plant protection products safely. Always read the label and follow all instructions for use.