Spray drift danger to grapevines

People spraying chemicals in grape growing areas have been reminded of the danger herbicide spray drift poses to grapevines.

NSW Department of Primary Industries (DPI) horticulturist, Jeremy Bright, said chemical users  have a legal responsibility to prevent spray drift  from contaminating or damaging neighbouring crops.

"Chemicals commonly used to control broadleaf weeds can cause considerable damage to grapevines," Mr Bright said.

"It can have a huge impact on production and some vines may take years to recover."

Chemicals which affect grapevines include 2,4-D, 2,4-DB, MCPA and glyphosate.

The use of 2,4-D high volatile esters is not permitted from September 1 until April 30 due to the risk of damage to susceptible crops, including grapevines, tomatoes and sunflower.

According to Mr Bright a number of practices should be followed to reduce the risk of spray drift.

"Always check for susceptible crops in the area and notify your neighbours of your spraying plans.

"Monitor weather conditions, wind speed and direction and don’t spray if conditions aren’t suitable.

"Clearly chemical users should always read the label, follow the manufacturer’s instructions and ensure they comply with legislation relating to the use of chemicals."

More information on how to reduce spray drift  and the legal requirements of herbicide use are available from NSW DPI offices and its website: Reducing herbicide spray drift Agnote DPI-477.