Results 



In the June border survey, host density ranged from 

 very high (4) at Harvard and Hawley, to moderate (2.2) 

 at Berlin, to none at Shelbume (Figure 2). FS density 

 on hosts ranged from moderate (2) at Harvard to low 

 (1) at N. Brookfield to none (0) at Hawley. Twenty 

 two percent of alternate host stems examined contained 

 FS at Harvard, while 6-9% of stems inspected con- 

 tained FS at Berlin, Warren, and N. Brookfield. 



The Harvard block, with the highest rating for den- 

 sity of FS m the border, had the most FS in the apples 

 at harvest (Table 2). When data for the four sites with 

 the most FS at harvest were combined and tested, it 

 was clear that the amount of FS observed in the bor- 

 ders in June had a major influence on the amount of 

 infection in the apples at harvest. In the perimeter- 

 rows and seven-rows captan treatments, 53% and 60%, 



respectively, of the variability in FS disease symptoms 

 at harvest was explained by this relationship (Figure 3 

 shows the seven-row captan treatment). In the Flint 

 treatments, the relationship was extant, but weaker 

 (31% and 10% of the variability explained). 



Distance to principal border ranged from 3.1m at 

 Harvard, to 9.1m at Hawley (Table 2). Distance to 

 perpendicular end borders ranged from 3.9m at Berlin 

 to 53m at Hawley. At the Shelbume site, there were 

 no significant borders within 100 meters of the block. 

 The importance of the distance to a principal border 

 on the level of infection in the apples was less than the 

 importance of the amount of FS in the borders, but it is 

 worth noting. As Figure 4 shows for the perimeter- 

 rows captan treatment, 10% of the variability in fruit 

 infection counts was explained by this relationship. 

 Within the other three treatments, this relationship was 

 weaker. 



Fruit Notes, Volume 67, Spring, 2002 



