Small Fruits 



111 



irregular, reddish brown spots with pycnidia are more rarely 

 produced. 



Plants, after several years of disease, die, as do cuttings 

 during the first or second year. Thrifty plants are much 

 more resistant than weak ones. Particular attention should, 

 therefore, be given to provide such irrigation as to best favor 

 the health and vigor of the plants. Sanding the fields often 

 gives good results, doubtless due partly to removal of con- 

 tagion by covering infective material. It is also advisable, 



Fig. 55. — Cranberry scald and blast. After Shear. 



for the same end, to rake out and burn all dead and infected 

 plants in the autumn. Cuttings should be taken from such 

 plants as show resistance to the disease. 



In spraying experiments by Shear, five applications of 

 6-6-50 Bordeaux mixture, with 4 pounds of rosin-fish-oil- 

 soap added to increase adhering power, showed 2.36 per 

 cent of rotten berries, while the unsprayed plats showed 

 92.6 per cent of rotten berries. The cost of application was 

 $15 to 120 per acre, using 200 gallons of mixture at each 

 application. 



Rot (Acanthorhynchus vacdnii Sh.). — An effect upon 

 the berry very similar to that of the scald fungus appears 



