300 



250 



010 inches Out 

 20 inches Out 

 ■ 10 inches In 

 20 inches In 



B 



Mid 



Late 



Post 



Entire 



Figure 2. Mean number AMF captured per odor-baited sphere \n Jersey Mac tiees when spheres were 

 either in the outer or inner half of the canopy and fohage and fruit were cleared to either 10 or 20 inches in 

 a radius around the sphere. Captures were evaluated for mid, late, and post season and across the entire 

 season. For the entire season, mean values superscribed by the same letter are not significantly different at 

 odds of 19:1. 



in the outer half of the canopy with foliage and fruit 

 cleared to 20 inches captured significantly more AMF 

 than equivalent spheres in the inner half of the canopy 

 with foliage and truit cleared to 1 or 20 inches (Figure 

 2). Captures on spheres placed in the outer half of the 

 canopy with foliage and fruit cleared to 10 inches were 

 not significantly different from the other treatments. 

 This pattern characterized adult response to sphere 

 treatments during mid, late and post season (Figure 2). 

 For our third question, data show that across the 

 entire season in Jersey Mac trees, baited spheres placed 

 in the outer half of the canopy with foliage and fruit 

 cleared to 20 inches caught significantly more female 

 AMF than baited spheres in the inner half of the canopy 

 with foliage and fruit cleared to 10 inches (Figure 3). 

 The same was true for males. On the other hand, there 

 was no significant difference in response of either 

 female or male adults to these two position treatments 

 when spheres were unbaited. For each sex and each 

 position, baited spheres captured significantly more 

 adults than unbaited spheres. These patterns 



characterized the response of each sex to each position 

 treatment during mid, late, and post season (Figure 3 ). 

 For our third question, data also reveal that across 

 the entire season in Golden Delicious trees, baited 

 spheres placed in the outer half of the canopy with 

 foliage and fruit cleared to 20 inches caught significantly 

 more female AMF than baited spheres m outer half of 

 the canopy with foliage and fruit cleared to 40 inches 

 (Figuire 4). Again, the same was true for males, again 

 there was no significant difference in response of either 

 sex to position treatments when spheres were unbaited, 

 and again baited spheres in each position captured 

 significantly more adults of each sex than unbaited 

 spheres. These patterns held during early, rnid and late 

 season (Figure 4). 



Conclusions 



Combined findings show that AMF responded 

 maximally to odor-baited red sphere traps when traps 

 were hung in the outer half of the tree canopy and all 



Fruit Notes, Volume 69, Spring, 2004 



17 



