To examine the potential impact of adjacent vegetation,
sampling was undertaken at 61 sites in commercial vineyards in
South Australia: 21 in the Barossa Valley (34380S, 138530E), 30
at Wrattonbully (37380S, 140490E) and 10 at Padthaway
(36350S, 140520E). Padthaway and Wrattonbully are 300 and