﻿54 
  

  

  DECIDUOUS 
  FKUIT 
  INSECTS 
  AND 
  INSECTICIDES. 
  

  

  A 
  third 
  and 
  upper 
  nozzle 
  is 
  mounted 
  on 
  a 
  longer 
  spur 
  which 
  projects 
  

   over 
  the 
  trellis. 
  This 
  nozzle 
  is 
  directed 
  downward, 
  throwing 
  the 
  

  

  spray 
  upon 
  the 
  top- 
  

   most 
  growth 
  on 
  the 
  

   trellis. 
  Such 
  a 
  ma- 
  

   chine 
  carrying 
  a 
  

   pressure 
  of 
  100 
  pounds 
  

   and 
  over 
  will 
  force 
  the 
  

   spray 
  into 
  the 
  vines 
  on 
  

   the 
  trellis 
  and 
  cover 
  

   quite 
  thoroughly 
  all 
  of 
  

   the 
  foliage 
  and 
  fruit 
  

   clusters, 
  especially 
  

   during 
  the 
  early 
  part 
  

   of 
  the 
  season 
  before 
  

   the 
  foliage 
  has 
  become 
  

   dense 
  and 
  before 
  the 
  

   berries 
  in 
  the 
  cluster 
  

   have 
  become 
  so 
  large 
  

   that 
  they 
  touch 
  each 
  

   other. 
  

  

  In 
  this 
  experiment 
  

   the 
  team 
  was 
  driven 
  

   slowly 
  down 
  each 
  row 
  

   so 
  that 
  the 
  vines 
  were 
  

   sprayed 
  from 
  both 
  

   sides 
  of 
  the 
  trellis. 
  A 
  

   pressure 
  of 
  about 
  100 
  

   pounds 
  was 
  main- 
  

   tained 
  and 
  about 
  100 
  

   gallons 
  of 
  spray 
  were 
  

   applied 
  per 
  acre. 
  

   Table 
  XXII 
  gives 
  the 
  spray 
  treatment 
  applied 
  to 
  each 
  plat 
  and 
  

   also 
  dates 
  of 
  application. 
  

  

  Table 
  XXII. 
  — 
  Spray 
  formulas 
  and 
  dates 
  of 
  application 
  against 
  larvae 
  of 
  the 
  grape-berry 
  

   moth. 
  Vineyard 
  of 
  Mr. 
  W. 
  S.' 
  Wheeler, 
  North 
  East, 
  Pa., 
  1907. 
  

  

  Fig. 
  19.— 
  Gasoline-engine 
  sprayer 
  outfit 
  used 
  in 
  vineyard 
  experi- 
  

   ments 
  against 
  the 
  larvae 
  of 
  the 
  grape-berry 
  moth 
  in 
  the 
  vineyard 
  

   of 
  Mr. 
  W. 
  S. 
  Wheeler, 
  North 
  East, 
  Pa., 
  1907, 
  1908, 
  and 
  1909. 
  

   (Original.) 
  

  

  Plat 
  

   No. 
  

  

  Spray 
  formula. 
  

  

  Number 
  

   of 
  spray 
  

   applica- 
  

   tions. 
  

  

  Date 
  of 
  application. 
  

  

  I. 
  

   II. 
  

  

  III. 
  

  

  IV. 
  

  

  V. 
  

  

  VI 
  

  

  Three 
  pounds 
  arsenate 
  of 
  lead 
  to 
  50 
  gallons 
  of 
  Bordeaux 
  mixture 
  

   Three 
  pounds 
  arsenate 
  of 
  lead 
  and 
  2 
  pounds 
  resin-fish-oil 
  soap 
  

  

  to 
  50 
  gallons 
  of 
  Bordeaux 
  mixture. 
  

   One 
  quart 
  arsenite 
  of 
  lime, 
  Kedzie's 
  formula, 
  and 
  2 
  pounds 
  

  

  resin-fish-oil 
  soap 
  to 
  50 
  gallons 
  of 
  Bordeaux 
  mixture. 
  

   One 
  quart 
  arsenite 
  of 
  lime, 
  Kedzie's 
  formula, 
  to 
  50 
  gallons 
  of 
  

  

  Bordeaux 
  mixture. 
  

   One 
  quart 
  arsenite 
  of 
  lime, 
  Kedzie's 
  formula, 
  and 
  2 
  pounds 
  

  

  resin-fish-oil 
  soap 
  to 
  50 
  gallons 
  of 
  Bordeaux 
  mixture. 
  

  

  3 
  

   3 
  

  

  3 
  

  

  3 
  

  

  2 
  

  

  June 
  19, 
  July 
  8, 
  27. 
  

   Do. 
  

  

  Do. 
  

  

  Do. 
  

  

  July 
  9, 
  27. 
  

  

  VII. 
  

  

  Three 
  pounds 
  arsenate 
  of 
  lead 
  and 
  2 
  pounds 
  rcsin-fish-oil 
  soap 
  

   to 
  50 
  gallons 
  of 
  Bordeaux 
  mixture. 
  

  

  2 
  

  

  Dc. 
  

  

  