﻿58 
  

  

  {Diatraea 
  saccharahs 
  ^nA 
  D. 
  canelh), 
  now 
  more 
  abundant 
  than 
  25 
  

   years 
  ago. 
  The 
  number 
  of 
  caterpillars 
  and 
  pupae 
  collected 
  by 
  cutting 
  

   °f.„„ 
  ^.f^ 
  ^«^rts 
  ' 
  was 
  15 
  285,960 
  in 
  1913, 
  as 
  compared 
  with 
  

   13,632,600 
  m 
  1912 
  It 
  is 
  advised 
  that 
  collecting 
  should 
  be 
  commenced 
  

   at 
  the 
  earliest 
  possible 
  moment, 
  in 
  order 
  to 
  prevent, 
  as 
  far 
  as 
  possible 
  

   the 
  complete 
  development 
  of 
  the 
  larvae 
  of 
  the 
  first 
  generation, 
  thus 
  

   largely 
  eliminating 
  the 
  second 
  and 
  third. 
  On 
  five 
  estates 
  281 
  181 
  

   eggs 
  were 
  collected 
  Attention 
  is 
  given 
  to 
  indirect 
  aids 
  to 
  control 
  

   prominent 
  among 
  which 
  are 
  :-(l) 
  The 
  production 
  of 
  healthy 
  vigorous 
  

   growing 
  canes, 
  and 
  (2) 
  the 
  use 
  of 
  resistant 
  varieties. 
  To 
  ensure 
  healthy 
  

   plants 
  selection 
  of 
  the 
  very 
  best 
  tops 
  only 
  is 
  admissible, 
  and 
  all 
  

   operations 
  of 
  drainage, 
  tillage, 
  weeding, 
  and 
  manuring 
  must 
  be 
  given 
  

   careful 
  artention 
  also. 
  The 
  Bourbon 
  cane 
  best 
  fulfils 
  the 
  second 
  con- 
  

   dition 
  m 
  British 
  Guiana. 
  Further 
  suggestions 
  are 
  (1). 
  that 
  the 
  trash 
  

   should 
  not 
  be 
  burnt, 
  and 
  (2) 
  that 
  there 
  should 
  be 
  less 
  ratooning 
  

   Termites 
  come 
  next 
  to 
  the 
  small 
  moth 
  borer 
  in 
  point 
  of 
  severity 
  of 
  

   attack. 
  The 
  weevil 
  borer 
  {MetanuMius 
  hemiptems) 
  was 
  present 
  on 
  all 
  

   estates, 
  but 
  abundant 
  on 
  only 
  a 
  few. 
  Other 
  insects, 
  the 
  occurrence 
  

   of 
  which 
  IS 
  mentioned, 
  are 
  : 
  The 
  coconut 
  palm 
  weevil 
  {Rhynchophorns 
  

   palmarum; 
  the 
  hard-back 
  beetles, 
  Dyscinetus 
  bi<kntatus\nACyclo- 
  

   cephalasignata- 
  the 
  shot-borer 
  {Xykborus 
  sp.) 
  ; 
  the 
  sugar-cane 
  

   AjidiotMAsptdwtus 
  sacckari); 
  the 
  pink 
  mealy-bug 
  {Pseudococcus 
  

   caheolarme). 
  A 
  leaf-hopper 
  and 
  a 
  frog-hopper 
  (Ton^spis 
  sp.) 
  were 
  

  

  ^^wl" 
  T^ 
  '"''" 
  °.""'^'''• 
  '^^'^ 
  cane-stool 
  moth, 
  the 
  dead 
  cane 
  

   moth 
  (Momdes 
  agroHna) 
  and 
  several 
  leaf-eating 
  caterpillars, 
  such 
  as 
  

   Memigiarepanda, 
  Laphygma 
  frugiperda 
  and 
  Lycophotia 
  infecta 
  are 
  also 
  

  

  SoLANET 
  (L. 
  B.). 
  Destruction 
  slmultan^e 
  du 
  N6gril 
  et 
  de 
  la 
  Cuscute 
  

   CI3S 
  Luzernes. 
  [The 
  simultaneous 
  Destruction 
  of 
  Colasvidema 
  

   atra 
  and 
  Lucerne 
  doMet.y-Mmtpellier, 
  n.d., 
  30 
  pp. 
  

  

  Experiments 
  made 
  during 
  four 
  consecutive 
  years 
  have 
  shown 
  that 
  

   calcmm 
  cyanamide 
  reduced 
  to 
  the 
  finest 
  and 
  lightest 
  powder 
  possible 
  

   and 
  applied 
  annually 
  at 
  the 
  rate 
  of 
  90 
  lbs. 
  per 
  acre, 
  is 
  an 
  efficacious 
  

   remedy 
  against 
  both 
  the 
  beetle 
  and 
  the 
  parasitic 
  plant. 
  It 
  does 
  not 
  

   interfere 
  in 
  any 
  way 
  with 
  the 
  growth 
  of 
  the 
  lucerne. 
  In 
  order 
  to 
  

   spread 
  such 
  a 
  small 
  quantity 
  of 
  cyanamide 
  uniformly 
  the 
  author 
  

   advises 
  Its 
  admixture 
  with 
  other 
  substances, 
  and 
  gives 
  the 
  following 
  

   .formula: 
  Cyanamide, 
  1 
  part 
  ; 
  gypsum, 
  2 
  parts 
  ; 
  wood 
  ashes, 
  1 
  part. 
  

  

  tJowDEY 
  (C. 
  C.). 
  Report 
  by 
  the 
  Entomologist 
  of 
  the 
  Uganda 
  Protec- 
  

  

  ioiate.— 
  Annual 
  Report 
  of 
  the 
  Dept. 
  of 
  Agric.for 
  the 
  year 
  ended 
  ZUt 
  

   March, 
  Kampala, 
  1913, 
  pp. 
  29-39. 
  

  

  Insects 
  attacking 
  Coffee.—Lecanium 
  africanum, 
  Newst., 
  was 
  the 
  most 
  

   prevalent 
  scale-insect 
  during 
  the 
  year, 
  attacking 
  both 
  vigorous 
  and 
  

   T^eak 
  trees 
  the 
  latter 
  usually 
  fatally. 
  It 
  is 
  treated 
  successfully 
  with 
  a 
  

   solution 
  of 
  whale-oil 
  soap 
  at 
  a 
  strength 
  of 
  1 
  lb. 
  of 
  soap 
  to 
  5 
  gallons 
  of 
  

   water 
  Both 
  L. 
  vmde. 
  Green, 
  and 
  L. 
  africanum 
  are 
  associated 
  with 
  a 
  

   .black 
  fungus. 
  L. 
  mr^de 
  restricts 
  its 
  attacks 
  to 
  the 
  under 
  surface 
  of 
  the 
  

   «aves 
  and 
  to 
  young 
  shoots. 
  This 
  species 
  has 
  also 
  proved 
  susceptible 
  

   to 
  treatment 
  with 
  whale-oil 
  soap. 
  It 
  is 
  preyed 
  on 
  by 
  the 
  Coccinellid 
  

  

  