﻿90 
  DECIDUOUS 
  FEUIT 
  INSECTS 
  AND 
  INSECTICIDES. 
  

  

  CONCLUSIONS. 
  

  

  The 
  foregoing 
  tests 
  of 
  lime-sulphur 
  wash 
  against 
  the 
  larvae 
  of 
  the 
  

   fall 
  webworm 
  show 
  that 
  this 
  preparation 
  has 
  decided 
  value 
  as 
  a 
  

   stomach 
  poison. 
  It 
  is 
  considered 
  extremely 
  probable 
  that 
  cater- 
  

   pillars 
  of 
  many 
  species 
  of 
  insects, 
  and 
  perhaps 
  mandibulate 
  insects 
  

   in 
  general, 
  will 
  be 
  similarly 
  susceptible. 
  As 
  shown 
  by 
  the 
  data 
  given, 
  

   lime-sulphur, 
  1J-50, 
  while 
  slower 
  in 
  killing 
  effect 
  than 
  arsenate 
  of 
  

   lead, 
  2-50, 
  nevertheless 
  compares 
  favorably 
  with 
  this 
  strength 
  of 
  

   arsenical. 
  A 
  comparison, 
  however, 
  of 
  leaf-areas 
  eaten 
  by 
  larvae 
  

   subjected 
  to 
  lime-sulphur 
  and 
  arsenate 
  of 
  lead, 
  respectively, 
  shows 
  

   that 
  the 
  lime-sulphur, 
  especially 
  at 
  increased 
  strengths, 
  compares 
  

   quite 
  favorably 
  with 
  the 
  arsenical 
  in 
  reducing 
  feeding 
  by 
  the 
  cater- 
  

   pillars. 
  

  

  This 
  action 
  of 
  lime-sulphur 
  as 
  a 
  stomach 
  poison 
  probably 
  accounts 
  

   for 
  the 
  reported 
  practical 
  control 
  of 
  the 
  codling 
  moth 
  in 
  orchards 
  

   treated 
  with 
  lime-sulphur 
  alone, 
  and 
  furnishes 
  an 
  additional 
  reason 
  

   for 
  its 
  employment 
  as 
  a 
  fungicide. 
  

  

  Experiments 
  in 
  progress 
  by 
  the 
  Bureau 
  of 
  Entomology 
  during 
  the 
  

   past 
  two 
  years 
  warrant 
  the 
  statement 
  that 
  entirely 
  satisfactory 
  

   results 
  in 
  controlling 
  the 
  codling 
  moth 
  in 
  orchards 
  may 
  be 
  obtained 
  

   with 
  lime-sulphur 
  wash 
  combined 
  with 
  reduced 
  strengths 
  of 
  arsenate 
  

   of 
  lead. 
  

  

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