2 7 6 



PLANT DISEASES 



ing with Bordeaux mixture would prove beneficial. 

 Diseased portions should be burned. 



Fig. 72. Ascochyta pisi. i, pod and leaflet of garden 

 pea diseased ; 2, section through two conceptacles of the 

 fungus, slightly mag. ; 3, conidia, x 300. 



LEAF SCALD 



(Entomosporium maculalum. Lev.) 



A very destructive fungus to pear, apple, peach, quince, 

 cherry, and other rosaceous fruit-trees. Diseased leaves 

 fall early in the year, and as all the leaves on a tree are 

 usually attacked, defoliation results; not unfrequently a 

 second growth of leaves takes place, and these suffer in the 

 same way, consequently the tree is much weakened, and in 

 the case of nursery stock the trees are frequently killed 

 outright, or are so enfeebled that grafting becomes a 

 difficult matter. In bad cases the fungus also attacks the 



