﻿I 
  

  

  603 
  

  

  the 
  tree 
  wthin 
  a 
  radius 
  of 
  16 
  inches 
  should 
  be 
  soaked. 
  To 
  facihtatethe 
  

   penetration 
  of 
  the 
  Hquid 
  the 
  soil, 
  which 
  must 
  be 
  impregnated 
  to 
  a 
  depth 
  

   of 
  4: 
  inches, 
  should 
  be 
  stirred 
  ; 
  4 
  to 
  10 
  pints 
  of 
  emulsion 
  are 
  required 
  

   per 
  tree, 
  according 
  to 
  age. 
  This 
  quantity 
  of 
  carbon 
  bisulphide 
  will 
  not 
  

   suffice 
  to 
  kill 
  Exophthalmus, 
  and 
  when 
  treating 
  cacao, 
  double 
  the 
  

   strength 
  is 
  required. 
  Round 
  the 
  stem 
  of 
  the 
  tree 
  make 
  a 
  trench 
  6 
  to 
  8 
  

   inches 
  broad 
  and 
  2 
  to 
  4 
  inches 
  deep, 
  according 
  to 
  whether 
  the 
  primary 
  

   roots 
  are 
  found 
  near 
  the 
  surface 
  or 
  not. 
  To 
  avoid 
  wounding 
  or 
  

   barking 
  them, 
  no 
  attempt 
  should 
  be 
  made 
  to 
  uncover 
  the 
  lateral 
  roots. 
  

   After 
  loosening 
  the 
  soil 
  at 
  the 
  bottom 
  of 
  the 
  trench, 
  it 
  should 
  be 
  filled 
  

   with 
  4 
  parts 
  of 
  stock 
  solution 
  per 
  1,000 
  of 
  water, 
  using 
  4 
  to 
  10 
  pints, 
  

   according 
  to 
  the 
  size 
  and 
  age 
  of 
  the 
  plant. 
  As 
  much 
  as 
  18 
  pints 
  may 
  

   be 
  used 
  for 
  the 
  larger 
  trees 
  if 
  sufficient 
  water 
  is 
  available. 
  Barbados 
  

   prices 
  are 
  given 
  for 
  each 
  constituent 
  and 
  the 
  cost 
  per 
  adult 
  cacao 
  tree, 
  

   using 
  the 
  stronger 
  emulsion 
  (1 
  gallon 
  per 
  tree), 
  is 
  a 
  little 
  over 
  ^d. 
  

  

  Exophthalmus 
  esuriens. 
  — 
  Agric. 
  News, 
  Barbados, 
  xiii, 
  no. 
  317, 
  20th 
  

   June 
  1914, 
  p. 
  203. 
  

  

  In 
  1912 
  Exophthalmus 
  esuriens 
  was 
  found 
  in 
  St. 
  Kitts 
  associated 
  with 
  

   root-borer 
  grubs 
  in 
  sugar-cane 
  [see 
  this 
  Review, 
  Ser. 
  A, 
  i, 
  p. 
  165] 
  and 
  

   this 
  year 
  some 
  40,000 
  of 
  these 
  insects 
  have 
  been 
  collected 
  on 
  cotton 
  

   plants 
  in 
  fields 
  adjoining 
  those 
  in 
  which 
  the 
  sugar-cane 
  was 
  so 
  severely 
  

   attacked 
  by 
  root-borer. 
  The 
  grubs 
  had 
  completed 
  their 
  growth 
  and 
  

   development 
  at 
  the 
  expense 
  of 
  the 
  canes, 
  and 
  the 
  adults, 
  on 
  emerging, 
  

   had 
  congregated 
  on 
  the 
  cotton 
  plants 
  for 
  the 
  purposes 
  of 
  feeding 
  and 
  

   mating. 
  About 
  the 
  same 
  time 
  these 
  weevils 
  made 
  their 
  appearance 
  

   in 
  great 
  numbers 
  in 
  Montserrat, 
  feeding 
  on 
  the 
  leaves 
  of 
  limes 
  and 
  

   other 
  citrus 
  plants. 
  During 
  June 
  a 
  similar 
  occurrence 
  was 
  reported 
  

   from 
  Antigua, 
  where 
  47 
  acres 
  of 
  limes 
  have 
  been 
  attacked, 
  7 
  acres 
  

   badly, 
  and 
  where 
  23,400 
  weevils 
  were 
  collected 
  in 
  four 
  days. 
  

  

  Boucher 
  (W. 
  A.). 
  Spraying. 
  — 
  Jl. 
  Agric. 
  Wellington, 
  N.Z., 
  viii. 
  no. 
  6, 
  

   20th 
  June 
  1914, 
  pp. 
  648-649. 
  

  

  For 
  mussel 
  scale, 
  red 
  spider, 
  and 
  mealy 
  bug, 
  the 
  author 
  recommends 
  

   spraying 
  with 
  emulsified 
  red 
  oil, 
  the 
  New 
  Zealand 
  winter 
  formula 
  

   for 
  use 
  when 
  the 
  trees 
  are 
  quite 
  dormant, 
  being 
  as 
  follows 
  : 
  — 
  4 
  lb. 
  special 
  

   soft 
  soap, 
  4 
  gallons 
  red 
  oil, 
  68 
  gallons 
  water. 
  The 
  soap 
  should 
  be 
  

   stirred 
  to 
  a 
  lather 
  in 
  2 
  gallons 
  of 
  boihng 
  water 
  and 
  the 
  oil 
  added. 
  

   This 
  mixture 
  should 
  be 
  emulsified 
  by 
  means 
  of 
  the 
  spray-pump, 
  and 
  

   when 
  the 
  remaining 
  66 
  gallons 
  are 
  added, 
  the 
  mixture 
  is 
  ready 
  for 
  

   use. 
  Early 
  appHcation 
  (July 
  or 
  August) 
  is 
  recommended, 
  as 
  spraying 
  

   with 
  oil 
  late 
  in 
  the 
  season 
  is 
  apt 
  to 
  destroy 
  the 
  swelHng 
  buds. 
  Some 
  

   growers 
  prefer 
  to 
  use 
  the 
  red 
  oil 
  in 
  the 
  proportion 
  of 
  1 
  gallon 
  of 
  emulsi- 
  

   fied 
  oil 
  to 
  10 
  or 
  12 
  gallons 
  of 
  water. 
  

  

  The 
  author 
  emphasises 
  the 
  fact 
  that 
  with 
  the 
  steady 
  expansion 
  

   of 
  the 
  export 
  trade 
  each 
  year 
  it 
  becomes 
  more 
  imperative 
  than 
  

   ever 
  that 
  orchard 
  pests 
  and 
  diseases 
  should 
  be, 
  as 
  far 
  as 
  possible, 
  

   eHminated. 
  

  

  