- Holmes, S. B.
Forest Pest Management Institute, Canadian Forestry Service
On 28 April, 1982, the New Brunswick Task Force on the Environment and Reye's Syndrome chaired by Walter O. Spitzer released its report to the New Brunswick government. One of the key recommendations made by the Task Force was that the use of Atlox 3409F in forest spraying to control spruce budworm be discontinued and replaced by another emulsifier. The major objection to the use of Atlox 3409F was that it has shown viral-enhancing properties in the in the laboratory and is currently being investigated as a possible cofactor in the pathogensis of Reye's syndrome in children. As a result of decisions reached following this report, and the availability of materials, the fenitrothion water based formulation was dropped from the 1982 New Brunswick spraying program and fenitrothion was applied dissolved in the solvents Dowanol TPM and Cyclosol 63. In addition, a 'crash' program was initiated, involving several cooperating agencies, aimed at generating in one year, all the data required to register new water-based formulations of fenitrothion and aminocarb which do not contain viral enhancing emulsifiers. As part of this 'actions plan' environmental impact studies were conducted in three experimental spary blocks treated with the candidate fentrothion and aminocarb formulations. The preliminary results of the aquatic impact studies are reported here. Concurrent terrestrial impact studies are reported here. Concurrent terrestrial impact studies are reported elsewhere. (McLeod, 1982)