(50DF 6 fl oz./lOO gal.) on later dates. In a 

 second treatment, one fungicide application 

 was made between pit hardening and fruit 

 ripening, with one additional fungicide applica- 

 tion during fruit ripening using the same 

 fungicides and rates. In the third treatment, no 

 fungicide applications were made following pit 

 hardening and one fungicide application was 

 made during fruit ripening using the same 

 fungicides and rates. A fourth treatment was 

 not sprayed at all. These treatments with the 

 numbers and dates of applications are detailed 

 in Table 1. 



Redhaven fruit were harvested on 15 and 2 1 

 Aug.; Glohaven fruit were harvested on 3 Sept. 

 Therefore, the last fungicide applications were 

 made from 2 to 4 weeks before harvest, 

 depending on the cultivar, and 2 to 4 weeks 

 after pit hardening. Therefore the experiment 

 evaluated the effect of different numbers of 

 fungicide sprays applied during pit hardening. 



from no sprays to five sprays. 



Evaluation of fruit rot damage was done at 

 harvest, and 5 to 7 days after harvest. Brown 

 rot and other rots were distinguished on the 

 basis of symptoms. Disease incidence is the 

 number of fruit which show any disease. 

 Disease severity estimates the extent of fruit 

 rot using a 1 to 5 scale, with 1 the least severe 

 and 5 the most severe. 



Results & Discussion 



The number of fungicide applications after 

 pit hardening but before ripening had an effect 

 on brown rot and other rots, but it was not 

 consistent. In Redhaven fruit at harvest, there 

 was significantly less rot in the full spray and 

 reduced spray treatments compared with the 

 low spray treatment (Table 2). However, the no 

 spray treatment also had significantly less 

 brown rot at harvest compared with the low 



Fruit Notes, Volume 62 (Number 4), Fall, 1997 



