353 



CHERRY. 



A fungus, the spores of which are carried from tree to tree by 

 Black-knot, the wind and thus spread the infection is the cause of this dis- 

 ease. The same fungus also affects plums, Cut out and bum all 



knots as soon as discovered. See that the knots are removed from all plums and 



cherry trees in the neighborhood. See Cornell Bulletin 8i. 



Produced by the same fungus that causes the brown rot of plums 

 and peaches. See Cornell Bulletin 98, pp. 409-410. See also 

 Geneva Bulletin 98. See page 362. 



Brown-rot 

 of fruit. 





Fig. 166. 

 Bean an- 

 thracnose. 



Fig. 167. Cliib-root of cabbage. 



This is a fungous disease in which the leaves become thickly 

 Leaf spot. covered with reddish or brown spots and fall preniaturely ;" 

 badly affected trees winterkill. Often, the dead spots drop out 

 leaving clear-cut holes. Spray with Bordeaux, 5-5-5°. Make four applications; 

 first, just before blossoms open: second, when fruit is free from calyx; third, 

 two weeks later; fourth, two ■ jeks after third. See Michigan Board Agriculture 

 Report 1906, p. 103. 



It attacks leaves at the tip of the growing shoots and is often 

 Powdery serious on nursery stock. The leaves curl and show white mealy 

 mildew. growth of the fungus. Dust heavily with sulfur or spray with 

 potassium sulfide, i oz. to 3 gals, water. 



