INSECTS, FUNGI, PLANT DISEASES, ETC. 



181 



to keep both patterns on band, so that any character of 

 work in the spraying line needed in the garden and 

 orchard may be carried on with the least delay and 

 trouble. 



In the use of the spraying material judgment must be 

 exercised. Of course, one solution will not do for all 

 purposes, and the gardener must hrst determine what 

 character of disease the plant has before making the 



Fig. 74— Just right to spray for Codling Moth. Cornell Exp. 

 Station Bulletin 142. 



application of the remedy, otherwise his labor may be 

 thrown away. As a general guide in this matter, the 

 following rules are given: 



1. Do not spray the plants while in bloom, because the 

 delicate organs may be injured; insects which are bene- 

 ficial, such as bees, etc., may be destroyed. 



2. There are a number of different formulae recom- 

 mended by writers on the subject of spraying, but the 

 experience of our best horticulturists and gardeners has 



