Speay Calendar. 341 



Bulletin 79. — Saw-Jly. Spray plants when not in bearing witli 

 arsenites, repeating application if necessary. 



Tomato. 



Leaf -blight. 1. As soon as disease is discovered, Bordeaux mix- 

 tur or a clear fungicide. 2, 3, etc. repeat 1 at intervals of 7 to 10 

 days. — Rot. Spray as directed under leaf-Might (unsatisfactory in 

 many cases). 



Violet. 



Blight j Spot. 1. When disease is first seen in summer or fall, 

 Bordeaux mixture ; 2, 3, etc., repeat one at intervals of 1 to 2 weeks, 

 using ammoniacal copper carbonate to avoid staining blossoms, 

 (Not always satisfactory as good culture must also be given.) 

 Remove affected leaves. 



FOliMULAS. 



Paris Green. 

 Paris green 1 pound 



Water 150-300 gallons 



If this mixture is to be used upon fruit trees, 1 pound of quick- 

 lime should be added, and repeated applications will injure most 

 foliage, unless the lime is used. Paris green and Bordeaux mix- 

 ture can he applied together with perfect safety. Use at the rate of 

 4 ounces of the arsenites to 50 gallons of the mixture. The action 

 of neither is weakened, and the Paris green loses all caustic proper- 

 ties. For insects which chew. 



London Purple. 



This is used in the same proportion as Paris green, but as it is 

 more caustic it should be applied with two or three times its weight 

 of lime, or with the Bordeaux mixture. The composition of Lon- 

 don purple is variable, and unless good reasons exist for supposing 

 that it contains as much arsenic as Paris green, use the latter poison. 

 Do not use London purple on peach or plum trees unless considera- 

 ble lime is added. For insects which chew. 



Normal or 1.6 Per Cent. Bordeaux Mixture. 



Copper Sulphate 6 pounds 



Quicklime 4 pounds 



Water 40-50 gallons 



