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Tree Fruit & Grape News, May 2001

Success™ now registered in Canada

On May 1, 2001, Dow AgroSciences announced that Success™ (spinosad) 480 SC was granted registration for control of obliquebanded leafroller on apple. Product is expected to be available for this season. Success is a new chemistry that received the U.S. President's Green Chemistry Award because of its combination of efficacy and human and environmental safety. It currently is registered for use in over 170 crops in the U.S. Further development of Success™ in Canada will be through the User Requested Minor Use Label Expansion Program (URMULE).

Spinosad, the active ingredient, is derived from the fermentation of a naturally occurring bacterium. The LD50 is 5000 mg/kg which means it is very safe compared to conventional organophosphate (diazinon, azinphos-methyl, phosmet) and carbamate (carbaryl) insecticides. Success™ does not harm common predaceous insects such as ladybird beetles, pirate bugs, lacewings etc. or spiders, and does not affect plant-feeding or predatory mites. Field research by the author has shown Success™ will reduce the prevalence of pansy spot and tentiform leafminer injury when applied at pink.

The recommended label rate is 182 mL/ha applied in 1000 L water/ha or less depending on tree size (maximum of 546 mL or 3 applications per season). Repeat application in 7-10 days if necessary. Do not apply within 7 days of harvest. The product kills by stomach and contact, so thorough application is essential for optimum performance. Success™ should be rotated with other insecticide chemistries to prevent the development of resistance.

Persons should not re-enter the treated areas within 14 days after application to carry out hand thinning, summer pruning or harvesting without personal protective equipment. For other activities, do not re-enter treated areas within 12 hours after application.

For more information, please contact: 
Hugh Philip, PAg, Extension Entomologist, 
B.C. Ministry of Agriculture, Food and Fisheries 
Kelowna
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