five interior trees in each of rows 3 and 5 of each plot 

 (total of 500 fruit per plot). All sampled fruit were picked 

 and kept in a greenhouse for one month before 

 examination for ovipositional punctures, confirmed by 

 dissection of punctured fruit for signs of larval growth. 

 Treatment comparisons and data analysis. In 

 both 2001 and 2002, the same 12 baited-sphere plots 

 used here received odor-baited spheres on each side 

 of each plot at arbitrarily prescribed distances of 6 or 



1 1 yards apart. Also, m both 2001 and 2002, the same 



12 grower-sprayed plots used here received similar 

 pesticide treatments as here. Use of unbaited spheres 

 on interior trees to monitor penefration of adults into 

 plots and sampling of fruit for AMF damage m 2001 

 and 2002 were equivalent to procedures used here. To 

 compare outcomes of the index -based approach of 2003 

 with the arbitrary approach of 2001 and 2002 for 

 assigning distances between spheres, we subjected 

 each year's data on number of baited spheres used on 

 perimeter trees, number of AMF captured per unbaited 

 monitoring sphere, and percent sampled fruit injured 

 by AMF to analysis of variance. 



For 2003 data, we used correlation analysis to 

 determine the relationship between percent injured fruit 



on each of the four sides of each of the 12 baited- 

 sphere plots and the value (1 , 2, or 3) ascribed to that 

 side for each of the following: tree size, quality of 

 pruning, cultivar susceptibility, and bordering habitat. 

 In addition, we used correlation analysis to determine 

 relationships between mean numbers of AMF captured 

 by interior unbaited monitoring traps in baited-sphere 

 plots or percent fruit injured on interior frees of baited- 

 sphere plots (100 fruit per plot) and tree size or quality 

 of pruning for that plot. Whereas, in every case, tree 

 size and quality of pruning were the same for all 

 perimeter trees in a plot, thus permitting such analysis, 

 cultivar susceptibility and border habitat differed among 

 perimeter trees of the same plot and thus were 

 excluded. 



Results 



Compared with the mean number of odor-baited 

 spheres deployed on perimeter trees per plot in 2001 

 and 2002, the mean number deployed in 2003 was 

 significantly fewer (33-39% fewer) (Figure I). Even 

 so, mean values in Figure 2 show that captures of 

 AMF on unbaited monitoring fraps at interiors of plots 



12 



Fruit Notes, Volume 69, Spring, 2004 



