362 REPORT OF THE DEPARTMENT OF ENTOMOLOGY OF THE 
usually the injuries have not been important. The owner believes 
that the mite has damaged his orchard, besides causing reduced fruit 
yields. A commercial preparation of the lime-sulphur wash, diluted 
with twelve parts of water, was sprayed on the trees during the last 
week in April. The mixture was applied with a hand pump. 
Results on mite— There was a marked difference between the 
foliage of the sprayed and unsprayed trees. ‘~he owner was con- 
vinced that a thorough application of the lime-sulphur wash in the 
spring affords efficient protection to the trees from the mite. 
| EXPERIMENT NO. 9. 
This experiment was conducted by Roy P. McPherson, Le Roy, 
Genesee County. The orchard that was sprayed comprises 
seven acres, planted to 200 trees, which vary in age from 35 to 45 
years. The more important varieties are King, Russet, Greening 
and Baldwin. The orchard has been cultivated almost continuously 
for the past ten years and has gradually increased in productiveness. 
The usual spraying with bordeaux mixture containing an arsenical 
poison has been practiced. The blister-mite made its appearance in 
conspicuous numbers in the orchard during the past two years, and 
the variety that has been most affected is the Baldwin. The Kings 
and Greenings have usually been less injured. The owner believes 
that the diseased condition of the foliage has lessened his crop yields 
by causing the young apples to drop, and reducing the size of the 
mature fruit. The spray that was employed for the treatment of 
of the trees was a miscible oil, diluted with fifteen parts of water. 
The treatment was given on April 7 and only one application was 
made. A power sprayer was used and the average quantity of 
mixture applied to each tree was five gallons. A number of trees 
were left as checks. The work of the mite was reported to be less 
prominent in this community than during the preceding year. 
Results on mite— As compared with the checks there was a 
marked reduction in the amount of infestation of the foliage of all 
the sprayed trees. The treated Baldwins were estimated to be 
about as one-quarter as badly infested as the checks, while the Kings 
and Greenings showed a much greater measure of protection. 
EXPERIMENT NO. IO. 
This experiment was made by Wm. L. Bradley, Pavilion, Genesee 
County. The orchard comprises 6 acres, planted to 250 trees, which 
are 33 years of age. The more important varieties are Northern 
