﻿431 
  

  

  i 
  "being 
  acquired 
  by 
  the 
  soil 
  of 
  some 
  of 
  the 
  Red 
  Bank 
  gardens. 
  At 
  

   first 
  sight 
  the 
  former 
  appears 
  the 
  more 
  plausible 
  explanation, 
  but 
  in 
  

   the 
  most 
  bhghted 
  part 
  of 
  Cachar, 
  the 
  Hailakandy 
  district, 
  the 
  tea 
  on 
  

   the 
  teelas 
  is 
  on 
  the 
  whole 
  less 
  liable 
  to 
  bhght 
  than 
  on 
  the 
  flats, 
  and 
  

   less 
  on 
  the 
  stiff 
  clay 
  flats 
  of 
  the 
  district 
  than 
  on 
  the 
  bheel 
  ; 
  here 
  the 
  

   tea 
  growing 
  on 
  the 
  richest 
  soil 
  is 
  more 
  affected, 
  and 
  the 
  soil 
  on 
  which 
  

   the 
  tea 
  suffers 
  least, 
  i.e., 
  the 
  teela 
  soil, 
  is 
  distinctly 
  similar 
  in 
  chemical 
  

   composition 
  to 
  the 
  Red 
  Bank 
  of 
  the 
  Duars. 
  This 
  seems 
  to 
  point 
  to 
  

   a 
  peculiarity 
  which, 
  if 
  present 
  in 
  the 
  grey 
  sandy 
  loam 
  of 
  the 
  Duars, 
  

   should 
  be 
  equally 
  present 
  in 
  the 
  bheel. 
  This 
  is 
  found 
  to 
  be 
  the 
  case. 
  

   Tables 
  are 
  given 
  of 
  the 
  available 
  potash 
  and 
  phosphoric 
  acid 
  in 
  

   five 
  samples 
  of 
  each 
  of 
  the 
  different 
  soils 
  mentioned, 
  except 
  in 
  the 
  

   case 
  of 
  blighted 
  Red 
  Bank 
  gardens, 
  where 
  only 
  one 
  set 
  of 
  figures 
  

   was 
  obtained. 
  From 
  the 
  results 
  of 
  these 
  analyses 
  the 
  author 
  con- 
  

   cludes 
  that, 
  so 
  far 
  as 
  at 
  present 
  observed, 
  mosquito 
  blight 
  is 
  found 
  

   on 
  tea 
  planted 
  in 
  a 
  variety 
  of 
  soils 
  in 
  which 
  the 
  actual 
  and 
  relative 
  

   amomits 
  of 
  the 
  constituents 
  may 
  be 
  very 
  different, 
  but 
  trees 
  planted 
  

   in 
  soil 
  with 
  a 
  low 
  ratio 
  of 
  available 
  potash 
  to 
  available 
  phosphoric 
  

   cicid 
  are 
  less 
  resistant 
  than 
  on 
  soil 
  in 
  which 
  this 
  ratio 
  is 
  high. 
  These 
  

   observations 
  suggest 
  a 
  possibility 
  of 
  influencing 
  the 
  susceptibility 
  of 
  

   tea 
  to 
  these 
  attacks, 
  by 
  manuring 
  in 
  such 
  a 
  way 
  as 
  to 
  alter 
  this 
  ratio. 
  

  

  Caesar 
  (L.). 
  Insects 
  attacking 
  the 
  Peach. 
  — 
  4:6th 
  Ann. 
  Rept. 
  Ontario 
  

   Fruit-Growers' 
  Assoc. 
  (1913), 
  Toronto, 
  1914, 
  pp. 
  25-31, 
  6 
  figs. 
  

  

  The 
  author 
  deals 
  with 
  the 
  chief 
  insects 
  attacking 
  the 
  peach, 
  with 
  

   special 
  reference 
  to 
  the 
  Peach 
  Borer 
  {Sanninoidea 
  exitiosa, 
  Say), 
  which 
  

   is 
  most 
  difficult 
  to 
  get 
  rid 
  of 
  when 
  once 
  an 
  orchard 
  is 
  infested 
  with 
  it. 
  

   It 
  also 
  attacks 
  plum, 
  cherry 
  and 
  apricot, 
  burrowing 
  beneath 
  the 
  bark 
  

   and 
  partly 
  or 
  completely 
  girdhng 
  the 
  tree. 
  The 
  half-grown 
  larva 
  

   passes 
  the 
  mnter 
  beneath 
  the 
  bark, 
  and 
  in 
  spring 
  grows 
  rapidly 
  until 
  

   about 
  the 
  end 
  of 
  Jmie, 
  when, 
  being 
  full 
  grown, 
  it 
  leaves 
  its 
  tunnel 
  and 
  

   pupates 
  on 
  the 
  outside 
  of 
  the 
  bark 
  or 
  on 
  the 
  adjacent 
  ground. 
  About 
  

   the 
  end 
  of 
  July, 
  the 
  moths 
  emerge 
  and 
  may 
  be 
  found 
  from 
  about 
  August 
  

   1st 
  to 
  the 
  end 
  of 
  September, 
  laying 
  their 
  eggs 
  on 
  the 
  trunks, 
  branches 
  

   and 
  leaves, 
  or 
  on 
  weeds 
  close 
  to 
  the 
  trees. 
  These 
  hatch 
  in 
  about 
  10 
  days 
  

   and 
  the 
  larvae 
  soon 
  work 
  their 
  way 
  into 
  the 
  soft 
  inner 
  bark. 
  At 
  first 
  

   little 
  brownish 
  sawdust 
  castings 
  are 
  thrown 
  out 
  where 
  they 
  feed, 
  later, 
  

   gum 
  exudes, 
  sometimes 
  in 
  large 
  masses. 
  There 
  is 
  thus 
  but 
  one 
  brood 
  

   in 
  the 
  year. 
  Control 
  is 
  difficult, 
  but 
  besides 
  digging 
  out 
  the 
  larvae 
  

   with 
  a 
  knife 
  or 
  wire, 
  the 
  author 
  finds 
  it 
  a 
  good 
  plan 
  to 
  mound 
  up 
  the 
  

   earth 
  round 
  the 
  tree 
  to 
  a 
  height 
  of 
  about 
  10 
  inches, 
  which 
  prevents 
  

   the 
  borers 
  from 
  boring 
  into 
  the 
  crowns, 
  as 
  the 
  point 
  of 
  attack 
  is 
  then 
  

   near 
  the 
  top 
  of 
  the 
  mound. 
  This 
  should 
  be 
  done 
  about 
  the 
  end 
  of 
  July 
  

   and 
  the 
  earth 
  removed 
  about 
  the 
  middle 
  of 
  October, 
  replaced 
  for 
  winter 
  

   protection, 
  and 
  removed 
  again 
  at 
  the 
  end 
  of 
  May. 
  Wrapping 
  \yith. 
  

   stout 
  paper 
  may 
  be 
  used 
  as 
  a 
  substitute 
  for 
  the 
  mounds. 
  This 
  should 
  

   be 
  about 
  18 
  inches 
  in 
  height 
  and 
  should 
  begin 
  from 
  below 
  the 
  ground 
  

   level, 
  the 
  earth 
  being 
  afterwards 
  heaped 
  about 
  four 
  inches 
  above 
  the 
  

   base 
  of 
  the 
  paper 
  : 
  the 
  latter 
  should 
  be 
  tightly 
  tied 
  at 
  the 
  top 
  with 
  a 
  

   cord 
  and 
  loosely 
  the 
  rest 
  of 
  the 
  way 
  down. 
  Tar-paper 
  is 
  often 
  used, 
  

   but 
  may 
  be 
  injurious 
  to 
  the 
  tree. 
  The 
  only 
  two 
  washes 
  are 
  ordinary 
  

   gas 
  tar 
  and 
  asphalt, 
  the 
  latter 
  being 
  the 
  more 
  satisfactory, 
  as 
  the 
  

  

  