I40 CROP PRODUCTION 



the Yellows disease. The whole tree may seem to be 

 affected suddenly, sending out rosettes of short and 

 slender twigs from all its branches, each twig being 

 crowded with small yellowish leaves. Such trees soon 

 die, and the only thing for the orchardist to do is to cut 

 and burn them promptly. 



Fungous Diseases 



The Peach Leaf-curl is a vexatious disease that often 

 causes the defoliation of the trees in spring. The young 

 leaves become strangely curled and swollen before they 

 fall off. The crop for the season is ruined in cases of 

 severe attack. The disease is local as a rule and rather 

 uncertain in its appearance, but is especially destructive 

 during wet springs. Fortunately this Curl can be easily 

 prevented by thorough spraying with lime-sulphur wash 

 or Bordeaux mixture during the dormant season and 

 before the buds swell. The Ume-sulphur spray has 

 the additional advantage that it destroys the San Jose 

 Scale. 



The Brown Rot of Stone Fruits has been the most 

 generally destructive disease in Peach orchards. The 

 annual loss on this fruit alone caused by this fungus has 

 been estimated at three million dollars. In addition to 

 the damage done the fruit on the tree and after packing, 

 the blossoms are destroyed, especially during wet springs. 

 The removal of the mummied peaches upon and beneath 

 the trees and spraying with dilute lime-sulphur washes 

 are effective remedial measures. 



Many other fungous diseases affect the Peach. The 

 Peach Scab is a serious and widespread malady of the 



