DARROM 



fs not winter hardy In New Jersey and is a poor producer be- 

 cause of this. It is susceptible to red ring spot virus, and is 

 already going out. In Michigan, it is too new to evaluate. Ber- 

 ries are large, firm, light blue with a strong, tart flavor and a 

 good scar, ripening with Coville. 



LATEBLUE 



is too new for evaluation of vigor and hardiness. It is a 

 promising, productive, good-flavored, late berry to replace Jersey 

 and Coville in New Jersey. Experience in Michigan is limited also, 

 but indications are that it matures rather late. U.S.D.A. says 

 that it ripens 10 to 14 days after Jersey and is probably too late 

 for New England. 



BLUEHAVEN and NORTHLAND 



were developed in Michigan for hardiness and released in 1967. 

 Both appear winter hardy and productive. Bluehaven is a standard 

 high-bush type ripening with and resembling Bluecrop, except that 

 it is less flavorful. Northland is a slower growing, spreading, 

 dwarf-type, extremely hardy with medium, dark colored, bland flavored 

 berries . 



*************** 



BLACK ROT OF APPLES 



Avery E. Rich 

 University 



, Plant Pathologist 

 of New Hampshire 



This disease goes by several different names, depending on 

 symptoms and the organs attacked. The leaf-spot stage is commonly 

 called "frogeye leaf spot", the canker stage 



on limbs is called 



"New York apple tree canker" or 'black rot canker", and the fruit- 

 rot stage is commonly called "black rot." All phases of the dis- 

 ease are caused by the fungus Physalospora obtusa . 



As the above names imply, symtoms include necrotic leaf spots 

 which usually begin to show up in late May or early June, limb can- 

 kers which show up at any time pf year, and a brown or black rot 

 of infected fruit. The fruit rot usually starts at the calyx end 

 or at a wound, and progresses outward in a series of rings. Fruit 

 rot symptoms show up from late summer until harvest. Finally, a 

 completely rotted fruit may be transformed into a wrinkled, black 

 mummy. Other symptoms and signs include black "pimples" on the 

 cankered limbs, on the infected leaves, and on the rotting fruit. 

 These are the fungus fruiting bodies (pycnidia) in which the spores 

 are produced. 



