96 THE CONNECTICUT POMOLOGICAL SOCIETY. 



and from three to twelve years old. A large majority of the 

 trees were full grown. This cost would have, undoubtedly, been 

 greater had the work been done in a small orchard. 



Results of spraying — Most of the trees spraj-ed were not 

 badly infested with scale, although nearly all had some scale, 

 and a few were considerably crusted. Within a short time of 

 application, examination of the infested trees showed that the* 

 insect under the scale had a shrivelled appearance, and when 

 pressed with the point of a knife or other instrument they were 

 found to be only a shrivelled, dry skin, while those on the 

 unsprayed trees were plump. 



May 20th, the trees were examined and more than 95 per 

 cent, of the scales were found to be killed. June 29th, examina- 

 tion of the sprayed trees showed them practically free from 

 3'oung scale, while trees near by that w^ere not sprayed showed 

 from 25 to 200 young scale per square inch. At this time some 

 of the old, live female scales were found on the sprayed trees, but 

 these had not produced young, probably owing to the absence 

 of living adult male scale insects. This would indicate that 

 the female scale is more resistant to spraying solutions than 

 is the male. 



Effect on the trees — In some places it has been noticed that 

 trees sprayed early in the spring with sulphur, lime and salt 

 solution were slower in developing leaves and blossoms than 

 trees not sprayed. Observations in this orchard seemed to 

 verify "this statement, the growth from some varieties being 

 from a day or two to a ^veek later than on the unsprayed trees 

 of the same variety. This was undoubtedly caused from the 

 white trees absorbing less heat than the unsprayed trees. In no 

 case did any of the trees show any signs of injury from the solu- 

 tion. Some facts noted in connection with the work would 

 indicate that the solution acts as a fungicide as well as an 

 insecticide. Peach leaf curl was quite prevalent this season 

 in many orchards, and while leaf curl was to be found to 

 some extent on Elberta trees near the sprayed orchard, none 

 could be found on any of the sprayed trees of that or other 

 varieties. However, several seasons' experience will be neces- 

 sary to demonstrate it to a certainty. That it has some eflfect 

 on the fungous growths on the barks of trees is certain, for 

 trees sprayed one year previous had a much smoother, cleaner 

 bark than the trees which had not been treated. 



