34 



FUXGI AXD rUXGICIDES 



not wortli gathering iip because of the rot with which 

 they are wholly or in part afiected/' Other southern 

 states suffer equally serious losses. One orchard in 

 Arkansas has been reported in which^ in 1887, the attack 

 of the fungus was so severe that seventy-fiye trees yielded 

 less than twenty-fiye bushels of fruit. A photographic 

 yiew of one of the depressed rotten spots as it appears on 

 the maturing fruit is shown in Fig. 17. 



This disease is distinguished after it has become 

 well established by the presence of small blackish pus- 



no. 17. APPLE SHOTVIXG KOT SPOT. 



tules scattered oyer the surface of the apple. These are 

 the fruiting spots of the fungus. The mycehum which 

 has penetrated the pnlpy tissue of the fruit in all direc- 

 tions, disorganizing it and causing the rot, here deyelops 

 a large number of cells, which rupture the skin of the 

 apple and produce the spores at the tips of slender pro- 



