﻿120 
  

  

  orchards, 
  and 
  of 
  numerous 
  remedies 
  tried, 
  10 
  per 
  cent, 
  kerosene 
  

   emulsion 
  seems 
  to 
  be 
  the 
  most 
  effective 
  against 
  this 
  and 
  other 
  aphids. 
  

   The 
  loss 
  caused 
  by 
  Hessian 
  FI3' 
  (Mayetiola 
  destructor) 
  is 
  periodic, 
  but 
  

   has 
  increased 
  during 
  the 
  last 
  two 
  years 
  in 
  Maryland. 
  When 
  wheat 
  is 
  

   infested 
  in 
  winter 
  or 
  early 
  spring 
  it 
  is 
  best 
  to 
  pasture 
  sheep 
  in 
  the 
  field, 
  

   that 
  they 
  may 
  eat 
  the 
  wheat 
  dow^n 
  to 
  the 
  roots. 
  As 
  the 
  insect 
  passes 
  

   the 
  summer 
  in 
  the 
  wheat 
  stubble, 
  this 
  should 
  be 
  burned 
  over 
  or 
  

   ploughed 
  under 
  as 
  soon 
  as 
  possible 
  after 
  harvest. 
  Rotation 
  of 
  crops 
  

   is 
  very 
  beneficial. 
  A 
  list 
  of 
  cities 
  and 
  tow^ns 
  is 
  given 
  and 
  dates 
  before 
  

   which 
  wheat 
  should 
  not 
  be 
  sown 
  in 
  these 
  places. 
  In 
  1912, 
  alfalfa, 
  

   corn, 
  millet, 
  law^ns 
  and 
  other 
  crops 
  or 
  plants 
  in 
  their 
  vicinity 
  were 
  

   seriously 
  damaged 
  by 
  the 
  fall 
  army 
  worm 
  (Laphygma 
  frugiperda). 
  

   The 
  larvae 
  can 
  be 
  controlled 
  by 
  the 
  use 
  of 
  poisoned 
  bait 
  spread 
  over 
  

   the 
  infested 
  area. 
  The 
  pickle 
  w^orm 
  (Diaphania 
  nitidalis) 
  also 
  caused 
  

   considerable 
  damage 
  to 
  cucumbers, 
  melons, 
  and 
  early 
  and 
  late 
  squashes 
  

   and 
  pumpkins 
  in 
  1912. 
  The 
  moth 
  deposits 
  her 
  eggs 
  in 
  the 
  blossoms 
  

   and 
  the 
  larvae 
  enter 
  the 
  young 
  fruits, 
  where 
  they 
  live 
  until 
  mature. 
  

   A 
  trap 
  crop, 
  coming 
  into 
  blossom 
  before 
  the 
  main 
  crop, 
  is 
  a 
  valuable 
  

   method 
  of 
  collecting 
  the 
  eggs 
  and 
  larvae. 
  All 
  rubbish 
  after 
  the 
  crop 
  

   is 
  taken 
  should 
  be 
  burned. 
  Widespread 
  injury 
  has 
  been 
  done 
  to 
  black 
  

   locust 
  trees, 
  especially 
  along 
  the 
  Potomac 
  River, 
  by 
  the 
  locust 
  Hispid 
  

   (Chalepus 
  dorsalis). 
  The 
  larvae 
  of 
  this 
  insect 
  feed 
  betw-een 
  the 
  two 
  

   surfaces 
  of 
  the 
  leaf, 
  where 
  they 
  also 
  pupate. 
  A 
  poison 
  spray 
  of 
  4 
  lb. 
  

   arsenate 
  of 
  lead 
  to 
  50 
  gals, 
  water 
  w^as 
  very 
  effective, 
  and 
  the 
  use 
  of 
  

   soap 
  in 
  the 
  spray 
  w^as 
  found 
  to 
  make 
  the 
  solution 
  adhere 
  to 
  the 
  foliage 
  

   better. 
  Burning 
  over 
  the 
  wood 
  lots 
  in 
  late 
  autumn 
  may 
  prove 
  bene- 
  

   ficial. 
  The 
  orange-striped 
  oak 
  worm 
  (Anisota 
  senatoria) 
  has 
  caused 
  

   considerable 
  defoliation 
  of 
  the 
  pin-oaks, 
  and 
  severe 
  injury 
  in 
  some 
  

   nurseries. 
  Two 
  pounds 
  of 
  arsenate 
  of 
  lead 
  to 
  fifty 
  gallons 
  of 
  w^ater 
  

   used 
  as 
  a 
  spray 
  will 
  control 
  the 
  pest. 
  

  

  Cory 
  (E. 
  N.). 
  The 
  Peacli-Tree 
  Borer. 
  — 
  Maryland 
  Agric. 
  Expt. 
  Sta., 
  

   College 
  Park, 
  Bull. 
  176, 
  April 
  1913, 
  pp. 
  181-218, 
  14 
  figs. 
  [Received 
  

   31st 
  Jan. 
  1914.] 
  

  

  The 
  peach-tree 
  borer 
  (Sanninoidea 
  exitiosa, 
  Say) 
  has 
  been 
  known 
  to 
  

   horticulturists 
  for 
  over 
  150 
  years. 
  It 
  has 
  been 
  found 
  breeding 
  in 
  plum, 
  

   both 
  wild 
  and 
  cultivated, 
  cherry, 
  June 
  berry, 
  flow^ering 
  almond, 
  

   nectarine, 
  apricot, 
  azalea, 
  peach 
  trees 
  and 
  shrubs. 
  Wild 
  cherry 
  is 
  

   probably 
  the 
  native 
  food-plant. 
  The 
  author 
  gives 
  details 
  of 
  several 
  

   breeding 
  experiments, 
  and 
  notes 
  that 
  the 
  greatest 
  number 
  of 
  eggs 
  

   deposited 
  by 
  one 
  moth 
  was 
  161, 
  the 
  greatest 
  number 
  in 
  one 
  place 
  47 
  

   and 
  of 
  all 
  eggs 
  deposited, 
  390 
  w-ere 
  on 
  the 
  leaves 
  and 
  67 
  on 
  the 
  trunk. 
  

   The 
  larvae 
  bore 
  into 
  the 
  trunk, 
  feed 
  all 
  the 
  summer, 
  usually 
  in 
  the 
  

   cambium, 
  and 
  in 
  the 
  autumn 
  work 
  down 
  below 
  ground 
  level. 
  Those 
  

   entering 
  the 
  trunk 
  higher 
  up 
  rarely 
  reach 
  maturity, 
  possibly 
  owdng 
  

   to 
  extremes 
  of 
  temperature. 
  The 
  pupal 
  stage 
  lasts 
  about 
  22-23 
  days. 
  

   From 
  the 
  eggs 
  the 
  parasite, 
  Telenomus 
  quaintancei, 
  Gir., 
  was 
  reared, 
  

   while 
  a 
  species 
  of 
  Bracon 
  and 
  of 
  Macrodyctium 
  have 
  been 
  bred 
  from 
  

   the 
  pupae. 
  

  

  A 
  table 
  and 
  explanatory 
  notes 
  are 
  given 
  showing 
  numerous 
  control 
  

   measures 
  tried 
  and 
  their 
  results. 
  The 
  author 
  states 
  that, 
  owing 
  to 
  

   the 
  habits 
  of 
  oviposition 
  of 
  the 
  moths, 
  mechanical 
  barriers 
  cannot 
  be 
  

  

  