ENEMIES OF PLANTS. 341 



brownish scab, often distorting the shape. It 

 does the most damage just at the time of blos- 

 soming, and the forming apples drop off. It 

 may be largely prevented by spraying with Bor- 



ne. 127. APPLE SCAB. 

 (After I,adernan ") 



deaux mixture several times in the spring just 

 before the blossoms open, and afterward at 

 intervals of two weeks. 



Let students spray an apple-tree for Apple Scab and 

 codling moth by combining Paris green (one-quarter 

 pound to 50 gallons of water) and Bordeaux mixture.* 



II. Fungicides.f 



(i) The best spray for general use as a fungi- 

 cide is, without doubt, the Bordeaux mixture. 



FORMULA FOR LIQUID BORDEAUX. 



Copper sulphate . . . 3 to 6 pounds 



Quicklime 3 to 6 pounds 



Water 50 gallons 



*See Bulletin 114, Illinois Experiment Station. 



f For Mildew on roses, etc., Flowers of Sulphur mixed with 

 one-third of its volume of Slaked Lime dusted on the foliage 

 is beneficial. 



