for t 

 f o rin 

 at 7 

 e f f e c 

 d u r i n 

 porta 

 mary 

 and r 

 ca t io 

 commu 

 the s 

 are n 



wo CO 



e). 

 to 10 

 t i ve 

 g the 

 nt pa 

 inf ec 

 aking 

 n of 

 ni cat 

 pring 

 o t cu 



vers 

 Ther 

 day 

 agai 



bio 

 rt i 

 t ion 



und 



50% 



ion) 







rr en 



at 7 t 

 ea f ter , 

 int erva 

 ns t the 

 ss om bl 

 n manag 



can b e 

 er apo t 

 urea pr 

 This 

 ther ch 

 tly reg 



o 10 day inter 



cover s p rays 

 Is , depending 



bud and twig 

 ight stage. C 

 ing the diseas 



greatly reduc 

 heci a . Combin 

 ills is especi 



is done when 

 emicals have b 

 is t er ed . 



21 



vals (the residual life of tri- 

 are made with benomyl (Benlate) 

 on rain. Benomyl is not very 

 blight stage, but it is effective 

 ultural controls can play an im- 

 e (Ramsdell et al . , 1976). Pri- 

 ed by cultivating between plants, 

 ing this practice with an appli- 

 ally effective (Stretch, personal 

 the apothecia start to emerge in 

 een used against apothecia, but 



Resistant varieties are almost non-existent. Only one numbered 

 selection was reported resistant to both primary and secondary 

 infections (Nelson & Bi 1 1 enb ender , 1971). Of named varieties, Bluetta, 

 Collins and Darrow were somewhat resistant to primary infections. 

 Jersey, Rubel, Burlington, Pemberton and Dixi are the least suscept- 

 ible in New Jersey (Varney & Stretch, 1966), while Earliblue, Blue- 

 ray, June, Atlantic and Ivanhoe are most susceptible. 



Re f er ences 



Nelson, J.W., and H.C. Bi t t enb ender . 1971. Mummy berry disease 



occurrence in blueberry selections test planting. Plant Diseas e 

 Reptr . 55: 651-653. 



Ramsdell, D.C., J.W. Nelson, and R. Myers. 1974. An epidemiological 



study of mummy berry disease of highbush blueberry. Phytopathology 

 64: 222-228. 



Ramsdell, D.C., J.W. Nelson, and R.L. Myers. 1975. Mummy berry dis- 

 ease of highbush blueberry; epidemiology and control. Phy to - 

 pathology 65: 229-232. 



Ramsdell, D.C., J.W. Nelson, and R.L. Myers. 1976. Interaction of 

 eradicant and protectant treatments upon the epidemiology and 

 control of mummy berry disease of highbush blueberry. Phy to - 

 pathology 66: 350-354. 



Varney, E., and A.W. Stretch. 1966. Diseases and their control. In: 

 P. Eck and N.F. Childers (eds.). Blueberry Culture, Rutgers 

 Univ. Press, New Brunswick, N.J. 



