Argentina OKs gall wasp insecticide
Argentine authorities have provisionally approved a systemic insecticide for the prevention and control of eucalyptus blue gum chalcids ( Leptocybe invasa), against which a state of emergency was declared last year. The national animal and plant health service, the Senasa, has registered Agrofina’s (Buenos Aires) Acero (acetamiprid 20%). It is a soluble powder formulation for use at 12.5-20 g/hl. The Senasa calls on companies interested in gaining approvals for the control of the wasps to submit applications. No preventive or curative products were available when the emergency was declared, the Senasa notes. The only nursery controls lay in the destruction of infected seedlings. In other countries where the pest is present, systemic pesticides based on imidacloprid, acetamiprid and thiamethoxam are being trialled. Blue gum chalcids were detected on eucalyptus plants in Argentina in 2010 ( Agrow No 594, p 21).