Glyphosate is a systemic knockdown herbicide that is used for brown fallow, summer weed or pre-seeding weed control, or selective weed control in glyphosate-resistant crops. Symptoms appear within five to seven days of spraying.
Links
[1] http://www.herbiguide.com.au/
[2] http://www.grdc.com.au/Resources/Factsheets/2012/05/Incrop-Herbicide-Use
[3] http://www.apvma.gov.au/