Number Pest/Bcneficials Observed by Very Small Growers 



Number Pests/Beneficials Observed by Small Growen 



Number Pest/Benencials Observed by Medium Growers 



Number Pests/Beneficials Observed by large Growers 



Figure 2. The percentage of each size category of orchard that monitored 0, 1 to 2, 3 to 5, or 6 to 

 9 pests or beneficials by direct observation, as reported in the 1995 Tree-fruit Survey. Very small 

 = 0-5 acres, small = 5.1-20 acres, medium = 20.1 to 50 acres, and large = 50.1+ acres. 



trap for apple maggot fly (AMF), which are deployed 

 by 60% of all Massachusetts fruit growers. Next 

 most often used is the white tarnished plant bug 

 (TPB) trap (42%), followed by the red leafminer (LM) 

 trap (39%), and the white trap for European apple 

 sawfly (EAS) (36%). Least often used were any 

 pheromone trap (17%), San Jose scale (SJS) sticky 

 tapes (10%), and yellow board traps for AMF (10%). 

 Once again, use of individual traps was very 



dependent on farm size. Three traps were used by 

 over 75% of large farms. It was somewhat surpris- 

 ing that the TPB trap was most heavily used (77% 

 of large farms), followed by the red LM trap and 

 the red AMF sphere (tied for use by 75% of large 

 farms). Fourth in use was the EAS trap (64%). The 

 only trap used by a relatively large number (50%) 

 of very small farms was the red AMF sphere. 



It is interesting to note that, while 100% of large 



16 



Fruit Notes, Summer, 1996 



