﻿427 
  

  

  fruit 
  thus 
  treated 
  is 
  due 
  to 
  all 
  parts 
  of 
  it 
  receiving 
  equal 
  amounts 
  of 
  

   sunshine, 
  but 
  in 
  any 
  case 
  it 
  is 
  not 
  carried 
  out 
  early 
  enough 
  or 
  per- 
  

   fectly 
  enough 
  to 
  be 
  of 
  much 
  use 
  in 
  destroying 
  the 
  pest. 
  The 
  remedy 
  

   suggested 
  by 
  the 
  author 
  is 
  that 
  each 
  selected 
  fruit 
  should 
  be 
  placed 
  in 
  

   a 
  light 
  mushn 
  bag, 
  which 
  should 
  be 
  drawn 
  close 
  round 
  the 
  stem. 
  

   When 
  the 
  fruit 
  so 
  protected 
  attains 
  the 
  age 
  of 
  six 
  days, 
  the 
  bag 
  could 
  

   be 
  removed 
  and 
  placed 
  over 
  some 
  other 
  fruit 
  ; 
  one 
  bag 
  would 
  then 
  

   serve 
  for 
  the 
  protection 
  of 
  about 
  twenty 
  young 
  melons 
  during 
  each 
  

   season. 
  If 
  it 
  is 
  desired 
  to 
  obtain 
  heavy 
  crops 
  of, 
  for 
  example, 
  40,000 
  

   melons 
  per 
  acre, 
  valued 
  at 
  £933 
  65. 
  86^., 
  2,000 
  bags 
  would 
  be 
  required 
  

   at 
  a 
  cost 
  of 
  not 
  more 
  than 
  £6 
  135. 
  4:d. 
  Without 
  bags 
  or 
  some 
  protection 
  

   against 
  the 
  fly 
  it 
  is 
  only 
  possible 
  to 
  produce 
  about 
  2,500 
  melons 
  per 
  

   acre, 
  locally 
  valued 
  at 
  £53 
  6s. 
  Sd. 
  ; 
  if 
  the 
  labour 
  for 
  fixing 
  and 
  removing 
  

   each 
  bag 
  cost 
  one 
  farthing 
  per 
  fruit, 
  the 
  cost 
  per 
  acre 
  for 
  this 
  labour 
  

   would 
  be 
  only 
  £41 
  135. 
  id. 
  

  

  Hartless 
  (A. 
  C). 
  Mango 
  Crops 
  and 
  some 
  Factors 
  influencing 
  them. 
  

  

  —Agric. 
  Jl. 
  India, 
  Pusa, 
  ix, 
  pt. 
  2, 
  April 
  1914, 
  pp. 
  141-159. 
  

  

  On 
  the 
  whole, 
  the 
  mango 
  in 
  Northern 
  India 
  is 
  a 
  healthy 
  tree 
  ; 
  no 
  

   serious 
  fungoid 
  disease 
  is 
  known, 
  and 
  only 
  two 
  kinds 
  of 
  insects 
  attack 
  

   it 
  seriously. 
  The 
  more 
  troublesome 
  of 
  these 
  is 
  a 
  species 
  of 
  Idiocerus, 
  

   belonging 
  to 
  the 
  family 
  Jassidae, 
  commonly 
  known 
  as 
  the 
  "mango- 
  

   hopper," 
  and 
  in 
  Northern 
  India 
  by 
  the 
  vernacular 
  name 
  of 
  "Chappe." 
  

   Comparatively 
  little 
  is 
  known 
  about 
  this 
  insect, 
  which 
  is 
  fortunately 
  

   not 
  of 
  frequent 
  occurrence 
  ; 
  in 
  one 
  case 
  an 
  interval 
  of 
  eight 
  years, 
  

   and 
  in 
  another 
  fourteen, 
  occurred 
  between 
  successive 
  attacks. 
  The 
  

   immediate 
  effect 
  of 
  the 
  attack 
  is 
  the 
  dropping 
  of 
  the 
  flowers, 
  the 
  

   foliage 
  not 
  appearing 
  to 
  suffer. 
  The 
  insect 
  disappears 
  after 
  the 
  

   flowering 
  season. 
  Spraying 
  with 
  crude 
  oil 
  emulsion 
  is 
  suggested, 
  

   but 
  it 
  must 
  be 
  done 
  before 
  the 
  insect 
  becomes 
  adult. 
  

  

  The 
  other 
  pest 
  is 
  the 
  mango-fly, 
  Dacus 
  ferruginens, 
  Fabr. 
  The 
  

   female 
  lays 
  eggs 
  in 
  the 
  tissue 
  of 
  the 
  fruit, 
  piercing 
  the 
  rind 
  by 
  means 
  

   of 
  its 
  ovipositor. 
  The 
  maggots 
  live 
  in 
  the 
  pulp, 
  tunnelling 
  through 
  it 
  

   in 
  all 
  directions, 
  and 
  after 
  about 
  10 
  days, 
  leave 
  the 
  fruit 
  and 
  enter 
  

   the 
  earth 
  to 
  pupate, 
  in 
  which 
  stage 
  they 
  remain 
  about 
  a 
  week. 
  The 
  

   fruits 
  attacked 
  suddenly 
  split 
  and 
  turn 
  yellow, 
  the 
  maggots 
  being 
  

   usually 
  found 
  in 
  the 
  rotting 
  pulp. 
  On 
  some 
  trees, 
  quite 
  10 
  per 
  cent, 
  

   of 
  the 
  fruit 
  is 
  attacked, 
  w^hile 
  others 
  close 
  by, 
  escape 
  altogether. 
  

  

  A 
  pest 
  of 
  lesser 
  importance 
  is 
  a 
  large 
  Coccid, 
  Monophlebus 
  sp. 
  It 
  

   is 
  found 
  every 
  year 
  on 
  mangoes, 
  and 
  recently 
  has 
  attacked 
  oranges 
  

   also. 
  Spraying 
  with 
  kerosene 
  emulsion 
  helped 
  to 
  keep 
  it 
  under 
  

   control, 
  but 
  it 
  is 
  more 
  effectively 
  checked 
  by 
  hot 
  winds. 
  

  

  Froggatt 
  (W. 
  W.). 
  a 
  descriptive 
  Catalogue 
  of 
  the 
  Scale 
  Insects 
  (Coc- 
  

   cidae) 
  of 
  Australia. 
  — 
  Agric. 
  Gaz. 
  N.S.W., 
  Sydney, 
  xxv, 
  pt. 
  4, 
  

   April 
  1914, 
  pp. 
  311-319, 
  1 
  pi. 
  

  

  The 
  second 
  part 
  of 
  a 
  catalogue 
  of 
  Australian 
  Coccidae 
  includes 
  

   accounts 
  of 
  25 
  species 
  belonging 
  to 
  the 
  genus 
  Aspidiotus 
  [see 
  this 
  

   Review, 
  Ser. 
  A, 
  ii, 
  p. 
  324.] 
  Four 
  new 
  species 
  are 
  described, 
  namely 
  

   A. 
  gidgei, 
  occurring 
  on 
  the 
  foliage 
  of 
  the 
  Gidgei 
  (Acacia 
  cambagei), 
  at 
  

   Pera 
  Bore 
  ; 
  A.junctilobius, 
  found 
  on 
  the 
  twigs 
  and 
  leaves 
  of 
  the 
  Yarran 
  

  

  (C46) 
  B 
  2 
  

  

  