New York AGrIcuLtturAL EXPERIMENT STATION. 293 
peaches and cherries sprayed with Scalecide at the rate of one part 
to twenty parts of water were so badly infested that resort had to 
be made to summer spraying to save the trees. Kil-o-Scale at the 
strength of one part to fifteen parts of water practically destroyed 
the scale, as there was very little evidence, even late in the fall, 
of larval activity. Preparations of Kil-o-Scale in the proportions 
of one part to twenty of water killed a large percentage of the 
scales. This enabled the trees to make a good growth, and they 
showed only a slight amount of infestation. Surekill was less 
effective in this experiment than either Scalecide or Kil-o-Scale, and 
applications of Surekill at rates of one part to either twenty or 
twenty-five parts of water had no appreciable effects upon the scale, 
as the trees sprayed with this preparation were, at the end of the 
summer, as badly infested as the checks. 
ORCHARD III. 
In this experiment 447 apple trees of five to eight years of age, 
384 pear trees of seven years of age, and 448 peach trees of five 
years of age, making a total of 1,279 trees, were sprayed with 
Scalecide during April, 1906. This spray was used at two strengths. 
One lot of 416 trees, including the three kinds of fruit, was sprayed 
with one part of the miscible oil diluted with ten parts of water and 
another lot of 863 trees was treated at the recommended strength 
of one part of the oil to twenty parts of water. The orchards were 
especially adapted for the purpose, as the trees have been given good 
care, and were thrifty and small in size. In the past, the owner has 
used clear oils, mechanical oil-emulsions, kerosene-lime wash and a 
small quantity of the sulphur wash to control the scale. This pest 
has been present in the orchards for about six years. ‘The infesta- 
tion varied with the individual trees but there was hardly a tree that 
did not have a good sprinkling of the scale, and many trees in each 
row showed more or less incrustation. In this experiment the rows 
immediately adjacent to a row treated with Scalecide were sprayed 
with kerosene-lime wash (15 per ct. or 30 per ct. oil) and the 
boiled lime-sulphur wash. In each block of the different kinds of 
fruit, one row was left unsprayed as a check. 
Results on scale-— Many scales were not affected by the treatment 
with Scalecide, using one part diluted with twenty parts of water. 
