Mid Murray Valley District Council ADFA Woorinen 29 November 1966

... This association desires to bring to your notice the widespread effects on vineyards and tomato plantations from what is thought to be aerial spraying of adjacent wheat crops. Although every vineyard reports distortion of leaves and failure of bunches to set their berries ... one factr that needs invesigation is the use of helicopters for this work. It is claimed that the drifts is much further with helicopters than with ordinary crop dusting planes. This may be because helicopters can operate in weather which would ground the ordinary plane, and that helicopter creates conditions which themselves cause drift...