2.1. General
The trees used in these investigations were located at the Centre for Tropical Horticulture at Alstonville in northern New South Wales (28.9◦S, 153.5◦E). The trees were variously sprayed with AVG or a placebo (water) pre or post anthesis, but not at anthesis, in order to avoid interference with pollination. The source of AVG was ReTain® (Sumitomo Chemicals Australia Pty Ltd, Epping NSW)
which is 150 g/kg active ingredient. Tween 20 (0.1%) was included as a surfactant in all AVG solutions and in the placebos