Increasing clover root weevil populations are being seen on the Coast and AgResearch intends to block their infestation with the release of the Irish wasp, a proven biocontrol agent against the serious pest.
The biocontrol project began in 2006 when AgResearch scientists, supported by industry good bodies DairyNZ and Beef + Lamb NZ and research trust Agmardt, first released the tiny parasitic wasp from Ireland.
Within 18 months trial releases in Waikato, Hawke’s Bay and Manawatu had exceeded scientist expectations.
The question is asked whether the Irish wasp lays two eggs......to be sure, to be sure?
No. It only lays one.