CALENDAR FOR TREATMENT OF PLANT DISEASES 

 AND INSECT PESTS. 



Prepared by W. J. Green and A. D. Selby. 



This calendar for the treatment of diseased conditions in 

 plants is designed to cover the needs of farmers and horticultur- 

 ists. It was first prepared at the request of the Ohio Horticul- 

 tural Society. Fungicides and insecticides may often be com- 

 bined in spraying, and, where Bordeaux mixture is used for 

 fungous diseases, this practice is recommended. Spraying young 

 orchards with Bordeaux mixture from time of planting, and of 

 stocks in nursery row, is strongly recommended to preserve 

 healthy conditions. 



REMEDIES. 

 FUNGICIDES. 



1 Bordeaux Mixture I. 



Copper Sulfate (blue vitriol) 4 pounds. 

 Quicklime (not air slaked) 4 pounds. 



(Ordinary air slaked lime or hydrate of lime one-fourth more.) 

 Water to make 50 gallons. 



Dissolve the copper sulfate in about two gallons of hot 

 water, contained in a wooden vessel, by stirring, or even better 

 by suspending the sulfate, contained in a cheese cloth sack, in a 

 large bucketful of cold water. With the cold water and cheese 

 cloth bag a longer time is required. Pour the sulfate solution 

 into the barrel or tank used for spraying, and fill one-third to 

 one-half full of water. Slake the lime by addition of a small 

 quantity of water, and when slaked cover freely with water and 

 stir. Pour the milk of lime thus made into the copper sulfate, 

 ( 228) 



