PEACH YELLOWS 



219 



Peach Leaf Curl. — This is a fungous disease which affects the 

 foliage of stone fruits and often causes severe dropping of leaves 



Fig. 148.- 



-Brown rot (monilia) on peach and plum. It affects the fruit, twigs, and leaves 

 of all stone fruits. 



in early summer or later (Fig. 149). The trouble is usually- 

 controlled without special effort while spraying orchards with 

 fungicides for other diseases such as brown 

 rot and scab. 



Peach Scab is a serious disease of the peach 

 in some sections. It affects the fruit and 

 causes it to harden and split on one side, and 

 the twigs turn brown. This makes them re- 

 semble an attack of twig blight on apples. 



The campaign just described for the control 

 of brown rot disease will be effective in the 

 control of scab. 



Peach Yellows. — This disease is difficult to 

 recognize. Its cause is not known. Symptoms 

 which indicate the disease are: (1) Red, 

 spotted character of the fruit; the spots and 

 red lines of flesh beneath them are scattered, 

 and appear on one side before they do on the 

 other. (2) Premature ripening and uneven 

 ripeness of fruit. (3) Bitter and insipid taste 

 of such fruits. (4) Tip growth of small yel- 

 lowish leaves from terminal buds. These leaves are stiff, narrow, 

 and stand outward from the stem. These tip growths may appear 



Fig. 149. — Peach leaf 

 curl disease which at' 

 tacks branches of cherry, 

 peach and plum. 



