• Sundaram, K. M. S.
  Forest Pest Management Institute
  
• Hopewell, W. W.
  Forest Pest Management Institute
  

The rate of disappearance of aminocarb residues in spruce foliage and forest soil was studied under natural meteorological conditions. The aminocarb formulation was applied as a simulated aerial spray at a rate of l/ha containing 57 g AI. Aminocarb residues were determined by gas chromatographic analysis, using a Tracor Model 550 chromatograph fitted with a hall detector, over a 69-day period following treatment. Initial concentrations of ca 10 ppm aminocard in foliage and 7 ppm in soil and half-life times of ca 6 and 2 days respectively, and had dropped to trace of non-detectable levels within 47 and 27 days. Aminocard was found to be labile and dissopated rapidly under normal weathering conditions. Details of the extraction and chromatographic determination of aminocard residues in foliage and soil are included.