Pitfall traps were used to study the opilionid fauna associated with commercial lowbush blueberry fields (Vaccinium angustifolium Ait.) in Washington and Hancock Co., Maine. Although the species Phalangium opilio L. was numerically dominant in all study years, there was a shift in the opilionid community over the past few years. In 1986-87 there was no significant difference in numbers of opilionid captured among three cultural treatments (mow, burn, and fruit-bearing) (F=2.284; df=2; P=0.1444). In 2001, there was a significant difference between fields treated with conventional insecticides and those managed “organically” (F=7.130; df=1; P=0.0168). No difference was observed in 2000. In 2000, mean opilionid captures increased with increasing distance from the field edge (F=10.272; df=3; P=0.0029), and captures increased as the sample season progressed. No such differences were observed in 2001. In 2003-2005, opilionids were sampled from fruit-bearing and vegetative fields (fruit-bearing fields only in 2005) maintained under three different management practices, conventional, reduced risk, and organic (2004 and 2005 only). We also studied the effect of field edge.