154 THE CONNECTICUT POMOLOGICAE SOCIETY. 



on one apple and one pear tree August 24. The apple tree 

 had a good sprinkling of scales, while the pear tree had only 

 a few. The trees were given a heavy coating, which proved 

 efficient. Upon examination October 8 only a single little 

 orphan scale was found and it must certainly have been car- 

 ried in some way from an infested tree near by. These trees 

 sprayed with rosin soap in the K-L showed considerable leaf 

 injury, while similar ones, treated with K-L only, showed 

 slight injury. Some of the spray was still sticking to the trees 

 October 8. 



The same mixture was sprayed on peach foliage for leaf 

 resistance August 23. Very slight injury to leaves, but none 

 to buds was detected ; the last examination was made 

 November 18. 



15 PER CENT. K-L. 



This was applied on July 2 to a pear tree quite badly in- 

 fested, especially with young scales. It was decidedly effect- 

 ive on the moving young, on some old ones, and on the inter- 

 mediate sizes as shown by examination July 20. There was 

 no foliage injury and the mixture was still sticking to the 

 tree. A very few young were being produced, so a second 

 application was given July 21. This was so effective that not 

 a single live scale could be found until August 26, when 10 

 young ones were discovered. The lower part of the tree 

 showed considerable, but not serious, leaf injury from the 

 second spraying. Another spraying at that time would un- 

 doubtedly have eradicated the pest, but it was preferred to 

 leave the tree undisturbed to see what condition it would be 

 in by winter. The scales multiplied so there was quite a 

 sprinkling on the rough bark by October 7 and a further in- 

 crease by November. The lesson from this is that the war- 

 fare must be relentless ; no quarter can be given to this perni- 

 cious pest. 



In the trial to eradicate the scale with one application from 

 apple and pear trees of the third year's growth, the 15 per 

 cent. K-L was a complete success. This was accomplished 

 with slight leaf injury. 



To test for foliage susceptibility to kerosene injury, 

 cherry, peach and wild goose plums were sprayed July 2. 



