Canadian Forest Service Publications
Résultats de traitements au phosphamidon, fenitrothion et novathion contre la tenthrède de Swaine, Neodiprion swainei Middleton, au Québec en 1967. 1969. McLeod, J.M. Annales de la Société Entomologique du Québec 14(2/3) : 55-68.
Issued by: Laurentian Forestry Centre
Catalog ID: 15576
Availability: PDF (request by e-mail)
Experimental aerial spraying operations were carried out against the Swaine jack pine sawfly, Neodiprion swainei Midd., using the insecticides phosphamidon and fenitrothion (Sumithion) applied at the rate of 1/8 and 1/4 pound of insecticide per 0.2 gallon of emulsifiable solution per acre, in separate tests. Absolute mortality of the pest in all tests exceeded 99%, 48 hours after application of the insecticides. Both insecticides also showed strong systemic properties six days following spray application; fenitrothion had the stronger effect of the two. Equally conclusive results were obtained in a concurrent commercial operation when over 95,000 acres of jack pine forests were sprayed to control N. swainei outbreaks, using the insecticides phosphamidon and Novathion (the latter virtually identical in chemical composition to fenitrothion) applied at the rate of 1/4 pound of insecticide per 0.2 gallon of emulsifiable solution per acre. The implications of these results for future aerial spraying operations againts N. swainei in Québec are discussed.