384. ReporRT OF THE DEPARTMENT OF ENTOMOLOGY OF THE 
SUMMARY AND CONCLUSIONS. 
The results of these experiments have shown very conclusively 
that the leaf blister-mite is not a difficult pest to combat, and that it 
can be efficiently controlled by sulphur sprays, miscible oils and 
home-made oil emulsions. The use of these remedies for the treat- 
ment of the mite was discussed in Bulletin 283, and subsequent ex- 
periments have confirmed their usefulness for this purpose. On 
the basis of the experiments described, there is nothing to add with 
regard to the employment of oil emulsions for the mite, but the 
merits of the sulphur sprays for the treatment of this pest should 
be more fully presented than has heretofore been possible. 
In the experiments with the sulphur sprays, comparative tests 
were made of the common lime-sulphur wash, a home-made con- 
centrated mixture, and two commercial concentrated preparations 
of the lime-sulphur wash. Very satisfactory results were obtained 
in every orchard in which they were employed, and there was ap- 
parently no appreciable difference in the effectiveness of the various 
preparations on the mite when they were used under similar condi- 
tions. The measure of protection actually obtained showed, as 
would naturally be expected, some slight variations in the various 
orchards, which were probably due, largely, to differences in the 
standards of spraying of the fruit growers. In every test all trees 
that were thoroughly treated with a sulphur spray showed, in com- 
parison with the checks, a marked diminution in the numbers of the 
mites, which in several instances resulted in almost complete 
destruction. The results show very plainly that one application dur- 
the dormant season, or as buds are bursting, affords efficient pro- 
tection to the trees, and that the mite is not ever likely to be of 
importance in orchards that are annually sprayed with the lime-sul- 
phur wash, a practice now common in many localities in this State 
where the scale threatens. 
The attention of fruit growers is for the first time called to the 
merits of the home-made concentrated lime-sulphur wash, which is 
deserving of more extensive tests under farm conditions for spray- 
ing for the mite. This method of compounding a sulphur spray by 
orchardists is still in the experimental stage and probably some 
slight changes will be made in the future as regards the proportions 
of lime and sulphur and the amount of dilution. It is a convenient 
