COMMON DISEASES AND INSECTS 
INJURIOO STO CR io 
S. A. Beacu, V. H. Lown anp F. C. Stewart. 
INTRODUCTION. 
The purpose of this bulletin is to furnish the fruit-grower with 
a concise account of the common diseases and insects most in- 
jurious to cultivated fruits in New York State and to present up- 
to-date directions for fighting them most efficiently and economi- 
cally. The accompanying index makes it easy to find any subject 
treated in the bulletin. 
The preparation of spray mixtures and the apparatus for ap- 
plying them are not treated here because they are discussed at 
length in Bulletin 121 and its appendix. Both Bulletin 121 and 
this bulletin should be preserved for reference. 
The various fruits are taken up in alphabetical order and under 
each one the diseases are first considered, then the insects. In the 
consideration of each particular disease or insect, it is the general 
plan of the bulletin to give first, one or more descriptive para- 
graphs setting forth its general appearance, the chief features of 
its life-history and its economic importance. Then follows a state- 
ment of the remedial or preventive treatment which is recom- 
mended or suggested by the authors. Where nothing can be posi- 
tively recommended, suggestions are made, pointing out what ap- 
pears to be the most promising line of treatment. Recommenda- 
tions quoted from other authors are given on their authority. 
In some instances it is possible to combat various diseases and 
insects with one general line of treatment. In such cases the 

* Reprint of Bulletin No. 170. 
