DISEASES OF SPECIAL CROPS 97 



Fig. 39. — Clitocybe upon apple. After Wilcox. 



The Lawyer, Loy, Mann, Dominie, Jonathan, Ben Davis, 

 and Winesap are especially susceptible. 



The methods of treatment recommended are clean cul- 

 ture, a cleansing spray, and one or two applications of a 

 preventive spray. 



Texas root rot. — This is destructive to apples in the re- 

 gions where it prevails. See cotton. 



