• Huckner, C.H.
  Forest Pest Management Institute
  
• McLeod, B.B.
  Forest Pest Management Institute
  

Experimental and operational applications of fenitrothion and phosphamidon at varying dosage rates were monitored to assess the impact of these treatments upon selected non-target components of the environment. Early application of fenitrothion did not affect honey bees, Apis mellifera Linnaeus, small forest songbirds or aquatic organisms. Subsequent treatments caused a noticeable but light impact upon the honey bee field force but did not harm the small forest bird or aquatic systems. Phosphamidon, where applied at dosage rates in excess of 0.140 kg AI/ha, caused mortality to the small forest songbird component, especially the ruby-crowned kinglet, Regulus calendula (Linnaeus).

Investigations into reports of pesticide damage to the environment by applications of fenitrothion, phosphamidon and aminocarb proved unfounded.