INFESTATION ill NEW HAMPSHIRE 77 



pears sent to market, but this species never occurs upon oranges 

 or lemons. 



INFESTATION IN NEW HAMPSHIRE. 



A few years ago there seemed some reason for hoping that 

 this pest would not thrive so far north as New Hampshire, but 

 this hope must be abandoned in the face of the facts now known 

 about its ]3resence in our state. That it can develop even as far 

 north as our "White Mountain region to an extent where it is 

 seriously destructive is beyond further question. 



The infestation first found was in the eastern j)art of Man- 

 chester, where a young mixed orchard of about forty trees was 

 very severely attacked by this scale. The trees consisted of 

 apples, peaches, pears, plums, cultivated cherries and wild 

 cherries, with gooseberry bushes planted between. All of 

 these, except the cultivated cherry, were very badly infested 

 when we first visited the place one year ago. The gooseberries 

 were so seriously attacked that they were burned, along with a 

 large number of branches pruned from the other trees. The 

 wild cherries were badly infested, a discouraging indication of 

 future trouble when we think how generally these trees are 

 distributed throughout the state. In a neighboring orchard of 

 sixteen young apple trees two were practically dying from scale 

 attack and others were more or less infested. Larger apple 

 trees in the neighborhood also showed occasional scales. 



The trees originally infested were sprayed in March, 1903, 

 with undiluted kerosene, which was then believed to be one of 

 the best remedies for this insect. The results obtained, how- 

 ever, were not satisfactory, only part of the insects being 

 killed, so that by last autumn the infestation was still serious, 

 requiring treatment this winter with a more effective insecticide. 



The next region of infestation of which we learned was at 

 Dover Point, where some peach, pear, and plum trees were very 

 seriously attacked, and neighboring apple trees less seriously. 

 The pest had doubtless been introduced through nursery stock, 

 and had been developing for some years. The owner promptly 

 sprayed these trees with the lime, sulphur, and salt wash, with 

 the result that the nine worst infested trees were killed, though 

 the lightly infested apple trees were not injured. I do not know 

 just why this result should have happened. 



Another infestation was found at Intervale, New Hamp- 

 shire, where a row of pears along the south side of a wall were 



