Accumulation and Persistence of Fenitrothion in Needles of Balsam Fir Possible Effects on Abundance of Neodiprion Abietis
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- Eidt, D.C.
Maritimes Forest Research Centre - Fredericton, New Brunswick - Mallet, V.N.
Department de chimie, Universite de Moncton, Nouveau-Brunkswick, Canada
Fenitrothion accumulates in foliage tissue of balsam fir, Abies balsamea (L.) Mill., in the forest but only until about 1.5 ug/g is reached. The balsam fir sawfly, Neodiprion abiestis (Harris), which belongs to the family of forest insects known to be most sensitive to fenitrothion, has become rare but persists in New Brunkswick in spite of the use of fenitrothion for control of spruce budworm, Choristoneura fumerifana (Clemens).
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