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  Ce/ibCKOH 
  (IpoMbimneHHOCTM 
  sa 
  l9l3roA'b. 
  [Report 
  

   on 
  the 
  work 
  at 
  the 
  Kiev 
  Station 
  for 
  the 
  fighting 
  of 
  plant 
  pests 
  

   of 
  the 
  South 
  Russian 
  Society 
  for 
  promoting 
  Agriculture, 
  for 
  

   1913.]— 
  «X03flMCTB0.» 
  [Choziaistvo], 
  Kiev, 
  no. 
  20, 
  12th 
  June, 
  

   pp. 
  680-686, 
  and 
  no. 
  21, 
  19th 
  June 
  1914, 
  pp. 
  713-718. 
  

  

  After 
  referring 
  to 
  the 
  work 
  on 
  various 
  insect 
  pests 
  dealt 
  with 
  in 
  a 
  

   special 
  report 
  [see 
  this 
  Review, 
  Ser. 
  A, 
  ii, 
  p. 
  341], 
  an 
  account 
  is 
  given 
  

   of 
  further 
  experiments 
  on 
  the 
  artificial 
  breeding 
  of 
  the 
  Chalcid, 
  

   Tricliogramma 
  (Pentarthron) 
  semblidis, 
  Aur., 
  in 
  the 
  eggs 
  of 
  Euxoa 
  

   segetum 
  [see 
  this 
  Revieiv, 
  Ser. 
  A, 
  i, 
  539-541]. 
  The 
  work 
  has 
  been 
  done 
  on 
  

   eggs 
  of 
  E. 
  segetum 
  laid 
  in 
  the 
  laboratory, 
  two 
  generations 
  having 
  

   been 
  obtained 
  between 
  January 
  and 
  June 
  1913. 
  It 
  appeared 
  that 
  

   freshly 
  laid 
  eggs, 
  1 
  or 
  2 
  days 
  after 
  deposition, 
  are 
  the 
  most 
  suitable 
  for 
  

   infection 
  ; 
  the 
  imago 
  of 
  the 
  parasites 
  hatches 
  in 
  from 
  9 
  to 
  12 
  days, 
  and 
  

   when 
  fed 
  on 
  sugar- 
  water 
  lives 
  up 
  to 
  10 
  days. 
  The 
  females 
  are 
  able 
  to 
  

   oviposit 
  immediately 
  after 
  emerging 
  from 
  the 
  egg 
  and 
  during 
  the 
  whole 
  

   of 
  their 
  life, 
  whether 
  fecundated 
  or 
  not, 
  but 
  the 
  eggs 
  infected 
  by 
  them 
  

   during 
  the 
  first 
  days 
  of 
  their 
  hfe 
  produced 
  parasites 
  more 
  uniformly. 
  

   Eggs 
  of 
  the 
  host 
  kept 
  at 
  a 
  temperature 
  of 
  27° 
  F. 
  for 
  a 
  month 
  were 
  still 
  

   able 
  to 
  produce 
  the 
  parasites, 
  and 
  infected 
  eggs 
  can 
  be 
  kept 
  at 
  a 
  low 
  

   temperature 
  for 
  a 
  period 
  of 
  5 
  months 
  without 
  causing 
  their 
  death. 
  

   These 
  parasites 
  also 
  infect 
  the 
  eggs 
  of 
  Cydia 
  pomonella, 
  Barathra 
  

   (Mamestra) 
  brassicae, 
  L., 
  Polia 
  suasa, 
  SchiS. 
  (Mamestra 
  dissimilis, 
  

   Knoch), 
  and 
  Phlyctaenodes 
  sticticalis, 
  L., 
  the 
  eggs 
  of 
  the 
  last 
  three 
  species 
  

   being 
  attacked 
  more 
  freely 
  than 
  those 
  of 
  C. 
  pomonella. 
  The 
  eggs 
  of 
  

   Pieris 
  brassicae 
  are 
  infected 
  only 
  in 
  the 
  absence 
  of 
  others, 
  while 
  

   those 
  of 
  Lymantria 
  dispar, 
  L., 
  and 
  of 
  Lecanium 
  bituberculatum, 
  Targ., 
  

   were 
  untouched. 
  More 
  details 
  of 
  these 
  experiments 
  wiU 
  be 
  pubhshed 
  

   in 
  due 
  course. 
  

  

  The 
  Station 
  has 
  experimented 
  on 
  catching 
  insects 
  in 
  troughs 
  with 
  

   molasses 
  ; 
  26,923 
  Noctuidae 
  were 
  caught 
  between 
  11th 
  August 
  and 
  

   19th 
  September 
  in 
  troughs 
  placed 
  on 
  beet 
  plantations 
  and 
  black 
  fallow 
  

   land 
  to 
  the 
  number 
  of 
  about 
  4 
  to 
  the 
  acre 
  ; 
  amongst 
  these 
  insects 
  

   only 
  530 
  proved 
  to 
  be 
  E. 
  segetum, 
  which 
  is 
  explained 
  by 
  the 
  scarcity 
  

   of 
  the 
  second 
  generation 
  of 
  this 
  species 
  in 
  the 
  year 
  under 
  report. 
  

   Caterpillars 
  of 
  Phlyctaenodes 
  sticticalis 
  have 
  injured 
  some 
  beet 
  planta- 
  

   tions 
  in 
  the 
  government 
  of 
  Poltava, 
  and 
  the 
  locahty 
  being 
  visited 
  in 
  

   June 
  by 
  V. 
  V. 
  Dobrovliansky, 
  it 
  was 
  found 
  that 
  the 
  injured 
  spots 
  were 
  

   isolated 
  from 
  one 
  another, 
  comprising 
  altogether 
  not 
  more 
  than 
  5J 
  

   acres, 
  the 
  remainder 
  of 
  the 
  plantations 
  being 
  practically 
  free. 
  Adults 
  

   were 
  found 
  in 
  small 
  numbers, 
  and 
  no 
  eggs 
  were 
  noticed. 
  Trap 
  trenches 
  

   were 
  dug 
  round 
  the 
  attacked 
  areas 
  and 
  the 
  plants 
  were 
  sprayed 
  with 
  

   Paris 
  green. 
  

  

  In 
  May, 
  Melolontha 
  hippocastani, 
  F., 
  in 
  company 
  with 
  single 
  speci- 
  

   mens 
  of 
  M. 
  melolontha, 
  damaged 
  apple, 
  pear 
  and 
  plum 
  trees 
  in 
  one 
  

   district 
  of 
  the 
  government 
  of 
  Kiev, 
  the 
  fohage 
  being 
  devoured 
  to 
  a 
  

   large 
  extent. 
  Pogonochaerus 
  fascicularis, 
  Panz., 
  Magdalis 
  violacea, 
  L., 
  

   and 
  Pissodes 
  notatus, 
  F., 
  caused 
  the 
  withering 
  of 
  the 
  last 
  year's 
  leading 
  

   shoots 
  of 
  pines 
  in 
  the 
  Zvenigorodok 
  Forest 
  ; 
  the 
  removal 
  and 
  burning 
  

   of 
  the 
  attacked 
  shoots 
  was 
  the 
  remedy 
  appHed. 
  

  

  