FOURTEENTH ANNUAL MEETING. 



29 



moth, will partially control the plum curculio. If, in acklition 

 to this treatment, we can stir the soil or cultivate under the 

 apple trees, once about July 15th, again about August ist, 

 and the third time about August 15th, the disastrous results 

 may largely be prevented. All infested apples which drop 

 should be destroyed every seven days. 



Professor S. A. Forbes, State Entomologist of Illinois, 

 has also conducted spraying experiments with arsenate of 

 lead against this insect in apple orchards. While the fruit 

 could be greatly improved by the treatment, a certain percent- 

 age of injured apples (about 28 per cent.) always remained, 

 even where thoroughly sprayed. He tried to account for this 

 percentage by considering it the amount that must be attacked 

 by the curculios before they could get enough poison to kill 

 them. In other words, it is necessary for them to do some 

 eating before they become poisoned, and in so doing they 

 injure nearly 28 per cent, of the fruit. 



The codling moth Carpocapsa pomonella Linn, was fully 

 as abundant as usual, but this insect may be controlled by a 

 proper spraying with arsenical poisons after the blossoms 

 drop. 



The apple maggot Rhagoletis (Trypefa) pomonella Wahh. 

 is on the increase in Connecticut, and no practical remedies 

 have yet been discovered. Destroying the fallen and infested 

 fruit is about the only thing that we can do, and this merely 

 reduces the number of adults for the following season. 



The apple aphis Aphis pomi DeGeer was fortunately not 

 injurious during the season. Eggs are now to be found on 

 the twigs and we may expect to have more of them next 

 season. 



In October, the strawberry root borer Typophorus canel- 

 liis Fabr. destroyed two acres of strawberries at South Man- 

 chester. This insect feeds on the roots of the plants in its 

 larval stage, and is usually worse in old fields. The adult 

 beetles also feed upon the leaves, appearing late in summer. 

 Strong mixtures of arsenate of lead or Paris green sprayed 

 upon the foliage is about the only remedy. 



From rather limited observations on pear trees sprayed 

 with the lime and sulphur mixtures, the pear psylla, Psylla 



