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  tobacco 
  dust 
  will 
  repel 
  them. 
  Traps 
  of 
  sacking, 
  boards, 
  etc., 
  as 
  

   employed 
  for 
  slugs 
  would 
  be 
  equally 
  effective 
  for 
  this 
  pest. 
  The 
  

   western 
  potato 
  flea-beetle 
  {Epitrix 
  subcrinita, 
  Lee.) 
  is 
  the 
  most 
  serious 
  

   pest 
  of 
  the 
  potato 
  and 
  tomato 
  in 
  Oregon. 
  The 
  beetle 
  eats 
  small 
  

   irregular 
  holes 
  in 
  the 
  leaf 
  from 
  the 
  underside 
  and 
  these 
  punctures 
  

   induce 
  the 
  growth 
  of 
  a 
  fungus. 
  The 
  larvae 
  tunnel 
  into 
  the 
  developing 
  

   tubers 
  underground 
  and 
  here 
  also 
  a 
  fungus 
  usually 
  gains 
  entrance. 
  

   The 
  beetle 
  avoids 
  sprayed 
  foliage. 
  Bordeaux 
  mixture 
  applied 
  for 
  the 
  

   potato 
  fungus 
  acts 
  as 
  a 
  very 
  effective 
  repellent 
  for 
  the 
  flea-beetle. 
  

   Arsenate 
  of 
  lead, 
  3 
  lb. 
  to 
  50 
  gals, 
  water, 
  with 
  the 
  addition 
  of 
  2J 
  quarts 
  

   of 
  a 
  good 
  cane-syrup, 
  is 
  suggested 
  as 
  a 
  spray. 
  The 
  under 
  surface 
  of 
  

   the 
  leaves 
  must 
  be 
  thoroughly 
  sprayed. 
  Strips 
  of 
  paper 
  suspended 
  over 
  

   the 
  plants 
  on 
  a 
  string 
  stretched 
  the 
  length 
  of 
  the 
  row 
  are 
  highly 
  recom- 
  

   mended 
  by 
  one 
  grower. 
  The 
  stalk-borer 
  {Papaipe 
  nebris, 
  Guen.) 
  

   tunnels 
  into 
  the 
  stalks 
  of 
  potato 
  and 
  tomato, 
  eating 
  out 
  the 
  

   heart. 
  As 
  a 
  control 
  measure, 
  cut 
  out 
  infested 
  stalks 
  and 
  burn 
  them. 
  

   The 
  tomato 
  worm 
  (Chloridea 
  obsoleta, 
  F.), 
  which 
  burrows 
  into 
  the 
  

   fruit, 
  also 
  attacks 
  sweet 
  corn. 
  Direct 
  hand 
  methods 
  are 
  employed 
  

   for 
  its 
  control. 
  For 
  the 
  tomato 
  aphis 
  (Marcrosiphum 
  lycopersici, 
  

   Clark), 
  rarely 
  occurring 
  in 
  injurious 
  numbers, 
  contact 
  sprays 
  

   would 
  prove 
  effective. 
  

  

  The 
  bean 
  Bruchus 
  (Acanthoscelides 
  obtecttis, 
  Say) 
  attacks 
  the 
  pods 
  in 
  

   the 
  field 
  and 
  is 
  also 
  able 
  to 
  breed 
  in 
  the 
  stored 
  seed. 
  The 
  adult 
  beetle 
  

   deposits 
  eggs 
  in 
  or 
  on 
  the 
  pods 
  in 
  the 
  field. 
  The 
  grubs 
  hatch 
  and 
  

   burrow 
  into 
  the 
  beans 
  and 
  are 
  carried 
  into 
  storage. 
  Weevily 
  beans 
  

   should 
  not 
  be 
  planted, 
  because 
  the 
  grubs 
  w^ill 
  continue 
  development 
  

   and 
  infest 
  the 
  new 
  crop. 
  A 
  temperature 
  of 
  145° 
  F. 
  will 
  kill 
  the 
  beetle 
  

   at 
  all 
  stages 
  and 
  will 
  not 
  injure 
  the 
  germination 
  of 
  the 
  seed. 
  Fumi- 
  

   gation 
  with 
  carbon-bisulphide 
  is 
  the 
  standard 
  treatment 
  for 
  stored 
  

   grain 
  pests. 
  The 
  pea 
  Bruchus 
  does 
  not 
  breed 
  in 
  stored 
  seed, 
  but 
  the 
  

   losses 
  due 
  to 
  it 
  are 
  very 
  heavy. 
  The 
  adult 
  beetles 
  deposit 
  eggs 
  on 
  the 
  

   forming 
  pods 
  ; 
  the 
  grubs 
  are 
  mature 
  at 
  gathering 
  time 
  and 
  pupate 
  

   in 
  the 
  stored 
  pea. 
  If 
  the 
  seed 
  is 
  held 
  over 
  a 
  season 
  in 
  a 
  tight 
  bin, 
  the 
  

   beetles 
  will 
  emerge 
  and 
  die. 
  Kerosene 
  at 
  the 
  rate 
  of 
  J 
  gallon 
  to 
  5 
  

   bushels 
  of 
  seed 
  is 
  recommended. 
  Pour 
  the 
  liquid 
  over 
  the 
  peas, 
  stir 
  

   thoroughly, 
  then 
  spread 
  the 
  peas 
  out 
  so 
  that 
  the 
  oil 
  may 
  pass 
  off. 
  

   The 
  treatment 
  recommended 
  for 
  the 
  bean 
  Bruchus 
  is 
  equally 
  efficacious 
  

   for 
  this 
  pest. 
  For 
  the 
  pea 
  aphis 
  (Macrosiphum 
  pisi, 
  Kalt.) 
  kerosene 
  

   emulsion 
  is 
  possibly 
  the 
  best 
  of 
  contact 
  sprays. 
  The 
  brush 
  and 
  

   cultivator 
  method 
  is 
  used 
  extensively 
  on 
  large 
  commercial 
  plantings 
  

   in 
  the 
  south. 
  The 
  rows 
  are 
  planted 
  sufficiently 
  far 
  apart 
  to 
  allow 
  a 
  

   single 
  horse 
  and 
  cultivator 
  to 
  pass 
  between. 
  The 
  insects 
  are 
  brushed 
  

   from 
  the 
  vines 
  during 
  the 
  heat 
  of 
  the 
  day 
  and 
  the 
  cultivator 
  stirs 
  them 
  

   into 
  the 
  hot 
  soil 
  where 
  they 
  die. 
  Another 
  arrangement 
  is 
  a 
  long 
  shallow 
  

   galvanised 
  pan, 
  which 
  is 
  drawn 
  between 
  the 
  rows 
  and 
  the 
  plant 
  lice 
  

   are 
  brushed 
  into 
  it. 
  The 
  pan 
  should 
  be 
  filled 
  with 
  water 
  and 
  a 
  thin 
  

   covering 
  of 
  oil 
  added. 
  Of 
  the 
  pests 
  of 
  the 
  cabbage 
  and 
  radish 
  crops 
  

   in 
  Oregon, 
  Phorbia 
  brassicae, 
  Bouche, 
  is 
  the 
  most 
  serious. 
  This 
  insect 
  

   also 
  feeds 
  on 
  the 
  turnip, 
  cauliflower, 
  celery, 
  rape 
  and 
  kale. 
  They 
  pass 
  

   the 
  winter 
  as 
  maggots 
  and 
  pupae 
  in 
  and 
  about 
  the 
  roots 
  of 
  their 
  food- 
  

   plants. 
  The 
  eggs 
  hatch 
  in 
  from 
  4 
  to 
  10 
  days 
  and 
  the 
  young 
  maggots 
  

   burrow 
  at 
  once 
  into 
  the 
  tender 
  plant. 
  To 
  check 
  the 
  pest 
  gather 
  and 
  

   destroy 
  all 
  waste 
  roots 
  and 
  refuse 
  tops 
  as 
  soon 
  as 
  the 
  crop 
  is 
  removed 
  ; 
  

  

  

  