Application for the Reassessment of a Hazardous Substance under ...

5.1.7.7.3 Tamarillos:A range of insecticides is registered for use on tamarillo,including carbaryl, acephate, diazinon, pymetrozine,deltamethrin, taufluvalinate, buprofezin and dichlorvos.Tomato/potato psyllid is a new and particularly damagingpest, which killed up to 60% of trees in 2009. Severalproducts, including some not registered on tamarillo, havebeen tested to see if they will control tomato/potatopsyllid, including thiacloprid, Success Naturalyte,spiromesifen and chlorotraniliprole. Dichlorvos,deltamethrin and abamectin have shown best control, butdichlorvos is preferred due to its short pre-harvest interval;5.1.7.7.4 Berryfruits:The main pests are bronze beetle on blueberries andCarpophilus beetle on strawberries both of which becomemore important as more persistent organophosphates areremoved from production programmes. Dichlorvos hasproved effective and its short pre-harvest interval is alsoan attraction. No alternative products have beenidentified, but it is not clear how much research has beenperformed;5.1.7.7.5 Ornamentals and cut flower production:Dichlorvos is used in ornamental and cut flowerproduction, particularly Cymbidium production. IPM isused for two-spotted mite (T. urticae) control anddichlorvos is a part of this management system becausethe eggs of the predatory mite, Phytoseiulus persimillis arenot affected. In addition, the fumigant action ofdichlorvos means that blooms do not get wet, which cancause disease. There is interest in using dichlorvos forlightbrown apple moth control in cut flowers and foliage.No alternative products were identified;5.1.7.7.6 Glasshouse vegetables:Dichlorvos is used fairly extensively because it can beused in a fogger which is quicker than applying a wetspray. It is used for clean-up of glasshouses and to knockdown pests prior to introduction of bees or predator mites.There are no alternative products that can be used infogging equipment. Tomato/potato psyllids establishmentin New Zealand is a particular problem for the glasshousetomato and capsicum industry and dichlorvos is one of 25pesticides listed for control of this pest, most of whichhave pre-harvest intervals as short as the 3 day periodapplicable to dichlorvos (Horticulture NZ, 2008);5.1.7.7.7 Mushrooms:Dichlorvos is not currently used, but deregistration wouldleave very few insecticides registered for use onmushrooms. Biological control agents, Hypoaspsaculeifer and Steinemema feltiae and fipronil anddiflubenzuron are registered alternatives, althoughdichlorvos could be used against a wider range of pests;Dichlorvos reassessment – application Page 68 of 436