﻿70 
  

  

  mixture 
  costs 
  about 
  £1 
  13s. 
  per 
  1,000 
  gallons, 
  or 
  £3 
  6s. 
  if 
  80 
  lb. 
  of 
  

   arsenate 
  of 
  lead 
  are 
  added. 
  One 
  per 
  cent, 
  lysol 
  costs 
  about 
  £2 
  per 
  1,000 
  

   gallons, 
  and 
  nicotin 
  sulphate 
  solution 
  about 
  the 
  same. 
  Kerosene 
  

   emulsion 
  is 
  still 
  more 
  expensive. 
  On 
  the 
  average, 
  three-quarters 
  of 
  a 
  

   gallon 
  of 
  spray 
  mixture 
  is 
  required 
  per 
  tree, 
  so 
  that 
  1 
  ,000 
  gallons 
  will 
  

   cover 
  1,300 
  trees. 
  These 
  figures 
  work 
  out 
  approximately 
  at 
  a 
  

   maximum 
  of 
  £3 
  per 
  1,000 
  trees 
  per 
  application. 
  Spraying 
  with 
  

   Bordeaux 
  mixture 
  alone 
  is 
  much 
  cheaper 
  than 
  this. 
  All 
  things 
  con- 
  

   sidered, 
  the 
  cost 
  per 
  1,000 
  trees 
  would 
  be 
  about 
  £2. 
  This 
  can 
  be 
  

   reduced 
  by 
  one-half 
  or 
  two-thirds 
  if 
  the 
  fruit 
  alone 
  is 
  sprayed. 
  The 
  

   cacao 
  spraying 
  experiments 
  were 
  showing 
  up 
  well 
  this 
  year 
  ; 
  not 
  only 
  

   were 
  the 
  sprayed 
  trees 
  yielding 
  better, 
  but 
  there 
  was 
  very 
  httle 
  black 
  

   cacao, 
  while 
  in 
  unsprayed 
  places 
  the 
  percentage 
  of 
  black 
  cacao 
  was 
  

   very 
  high. 
  

  

  Mr. 
  Urich 
  has 
  noticed 
  that 
  when 
  a 
  certain 
  insecticide 
  turned 
  out 
  to 
  

   be 
  good, 
  and 
  a 
  demand 
  was 
  made 
  on 
  it, 
  it 
  generally 
  gave 
  out, 
  and 
  much 
  

   time 
  elapsed 
  before 
  more 
  could 
  be 
  had, 
  even 
  if 
  telegraphed 
  for. 
  That 
  

   especially 
  applied 
  to 
  lysol. 
  A 
  search 
  is 
  being 
  made 
  for 
  natural 
  

   enemies 
  of 
  the 
  cacao 
  Thrips, 
  and 
  one 
  may 
  be 
  found 
  in 
  Trinidad 
  or 
  

   some 
  other 
  island. 
  Later 
  on, 
  Mr. 
  Urich 
  reports 
  a 
  decrease 
  of 
  the 
  

   insects, 
  but 
  recommends 
  a 
  careful 
  watch 
  for 
  their 
  appearance 
  on 
  the 
  

   pods. 
  As 
  soon 
  as 
  this 
  takes 
  place 
  the 
  pods 
  should 
  be 
  sprayed. 
  Thrips 
  

   yield 
  to 
  good 
  cultural 
  methods 
  very 
  easily. 
  

  

  The 
  ravages 
  of 
  the 
  cacao 
  beetle 
  (Stirastoma 
  depressum) 
  are 
  quite 
  as 
  

   bad, 
  if 
  not 
  worse, 
  than 
  those 
  of 
  Thrips. 
  Energetic 
  application 
  of 
  

   trapping, 
  and 
  spraying 
  with 
  arsenate 
  of 
  lead 
  is 
  recommended. 
  Arsenate 
  

   of 
  lead 
  can 
  also 
  be 
  very 
  well 
  applied 
  to 
  small 
  trees 
  with 
  a 
  good-sized 
  

   paint-brush. 
  

  

  At 
  the 
  September 
  meeting 
  of 
  the 
  Board 
  of 
  Agriculture, 
  Mr. 
  Urich 
  

   stated 
  that 
  he 
  observed 
  but 
  few 
  Thrips 
  on 
  his 
  recent 
  visits 
  to 
  the 
  dis- 
  

   tricts 
  of 
  Sangre, 
  Grande, 
  and 
  Caparo, 
  nor 
  had 
  he 
  any 
  reports 
  of 
  their 
  

   prevalence 
  in 
  numbers 
  in 
  other 
  places. 
  The 
  rains 
  appeared 
  to 
  be 
  

   keeping 
  them 
  in 
  abeyance. 
  

  

  Adult 
  cacao 
  beetles 
  were 
  just 
  appearing, 
  and 
  it 
  would 
  be 
  well 
  to 
  

   collect 
  and 
  trap 
  them 
  before 
  they 
  had 
  time 
  to 
  lay 
  eggs. 
  In 
  places 
  

   where 
  Thrips 
  or 
  cacao 
  beetles 
  are 
  known 
  to 
  be 
  troublesome, 
  spraying 
  

   should 
  be 
  carried 
  out 
  during 
  October. 
  For 
  Thrips 
  it 
  is 
  recommended 
  

   to 
  use 
  Bordeaux 
  mixture 
  and 
  lysol 
  in 
  the 
  proportion 
  of 
  one 
  to 
  two 
  

   gallons 
  of 
  lysol 
  to 
  every 
  100 
  gallons 
  of 
  mixture. 
  For 
  cacao 
  beetles 
  

   Bordeaux 
  mixture 
  with 
  4 
  to 
  8 
  lb. 
  of 
  arsenate 
  of 
  lead 
  to 
  every 
  100 
  

   gallons 
  of 
  mixture 
  should 
  be 
  used. 
  

  

  KoRER 
  (J. 
  B.). 
  The 
  Green 
  Muscardine 
  Fungus. 
  — 
  Bull. 
  Dept 
  Agric.y 
  

   Trinidad 
  and 
  Tobago, 
  Port 
  of 
  Spain, 
  Sept. 
  1913, 
  xii, 
  no. 
  73, 
  p. 
  105. 
  

  

  A 
  point 
  of 
  great 
  economic 
  importance 
  is 
  that 
  infections 
  with 
  the 
  

   disease 
  can 
  be 
  brought 
  about 
  as 
  early 
  in 
  the 
  season 
  as 
  the 
  froghopper 
  

   appears. 
  The 
  author 
  saw 
  dead 
  froghoppers 
  of 
  the 
  first 
  brood 
  covered 
  

   with 
  the 
  fungus 
  two 
  weeks 
  after 
  the 
  spores 
  were 
  applied, 
  and 
  this 
  was 
  

   much 
  earlier 
  than 
  he 
  ever 
  observed 
  natural 
  infection 
  taking 
  place. 
  

   He 
  mentions 
  that 
  a 
  few 
  fungus 
  cultivating 
  cabinets 
  have 
  been 
  con- 
  

   structed 
  in 
  Porto 
  Rico, 
  where 
  certain 
  beetles 
  which 
  attack 
  sugar-cane 
  

  

  