224 Diseases of Truck Crops 



sider (i), the yielding quality of the strain; (2), the 

 earliness in maturing; (3), resistant qualities; (4), 

 form, size, and netting; (5), texture and edible quali- 

 ties; (6), shipping qualities. Blinn x found that resis- 

 tance in cantaloupes seems to go hand in hand with 

 the netting of the rind. Good netting seems also to 

 favor good shipping melons with fine flavor. It 

 seems that the closer the netting the better will the 

 fruit be protected from loss of weight from evapora- 

 tion. The Rocky Ford Pollock strain is claimed to be 

 resistant to blight. Control by spraying, see cu- 

 cumber, p. 232. 



PHYLLOSTICTA LEAF SPOT 

 Caused by Phyllosticta cucurbitacearum Sacc. 



This disease has not proved as serious as leaf 

 blight. It is characterized by spots which are light 

 in color. The pycnidia are pointed, the spores 

 oblong and curved, hyaline and one-celled. The dis- 

 ease may be controlled by spraying, see p. 232. 



CERCOSPORA LEAF SPOT 

 Caused by Cercospora cucurbits E. and E. 



This disease behaves very much like leaf blight. 

 In the former, however, the spots are usually of a 

 1 Blinn, P. K., Colorado Agr. Expt. Sta. Bui. 104: 3-15, 1905. 



