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  DECIDUOUS 
  FKUIT 
  INSECTS 
  AND 
  INSECTICIDES. 
  

  

  plowing 
  under 
  the 
  pupa-infested 
  leaves 
  in 
  this 
  manner 
  will 
  destroy 
  

   the 
  insect 
  in 
  this 
  stage, 
  but 
  it 
  is 
  highly 
  probable 
  that 
  many 
  fatalities 
  

   will 
  result 
  from 
  the 
  method. 
  It 
  is 
  believed 
  that 
  greater 
  success 
  will 
  

   result 
  from 
  an 
  endeavor 
  to 
  destroy 
  the 
  pupae 
  which 
  are 
  in 
  cocoons 
  

   upon 
  leaves 
  that 
  remain 
  in 
  the 
  vineyard 
  through 
  out 
  the 
  winter 
  than 
  

   in 
  the 
  destruction 
  of 
  leaves 
  outside 
  of 
  the 
  vineyard 
  which 
  are 
  blown 
  

   into 
  fence 
  rows, 
  ditches, 
  and 
  adjacent 
  rough 
  lands. 
  No 
  moths 
  of 
  this 
  

   insect 
  have 
  been 
  reared 
  from 
  grape 
  leaves 
  gathered 
  from 
  these 
  latter 
  

   locations, 
  although 
  several 
  attempts 
  have 
  been 
  made 
  to 
  secure 
  speci- 
  

   mens 
  from 
  them. 
  

  

  Fig. 
  22.— 
  Overwintering 
  cocoons 
  of 
  the 
  grape-berry 
  moth 
  upon 
  leaf 
  on 
  ground, 
  beneath 
  a 
  badly 
  infested 
  

  

  grapevine. 
  (Ordinal.) 
  

  

  CONCLUSION. 
  

  

  Wherever 
  vineyards 
  have 
  become 
  badly 
  infested 
  by 
  the 
  grape-berry 
  

   moth 
  serious 
  injury 
  to 
  the 
  crop 
  has 
  resulted 
  and 
  the 
  owners 
  of 
  the 
  

   infested 
  vineyards 
  have 
  found 
  it 
  a 
  very 
  difficult 
  pest 
  to 
  eradicate. 
  

   Many 
  vineyardists 
  who 
  have 
  tried 
  to 
  control 
  the 
  pest 
  with 
  a 
  poison 
  

   spray 
  have 
  not 
  met 
  with 
  as 
  complete 
  success 
  as 
  they 
  would 
  wish. 
  

   Many 
  such 
  instances 
  of 
  complete 
  or 
  partial 
  failure 
  have 
  been 
  observed. 
  

   In 
  nearly 
  all 
  of 
  these 
  cases, 
  however, 
  investigation 
  has 
  shown 
  that 
  

   this 
  lack 
  of 
  success, 
  in 
  all 
  probability, 
  was 
  largely 
  due, 
  either 
  to 
  

   inferior 
  spraying 
  equipment 
  which 
  failed 
  to 
  deliver 
  the 
  spray 
  in 
  

   sufficient 
  quantity 
  and 
  force 
  to 
  thoroughly 
  cover 
  the 
  clusters, 
  or 
  to 
  the 
  

   fact 
  that 
  the 
  applications 
  were 
  not 
  made 
  at 
  a 
  time 
  when 
  the 
  majority 
  

   of 
  the 
  larvae 
  were 
  about 
  to 
  hatch. 
  Frequently 
  both 
  of 
  these 
  condi- 
  

  

  