The region’s broadacre farmers heard the latest information about controlling weeds in retained stubble and maximising pre-emergent spray applications by selecting the correct nozzles at a Riverine Plains event in Rennie on Friday, February 5.
Spray Safe and Save director Craig Day presented the boom spray training day, which attracted about 100 people including farmers, agricultural advisers and representatives from spray machinery companies.
Mr Day said the industry was aware of the importance of maximising pre-emergent herbicide applications, particularly as many growers were experiencing reduced effectiveness of in-crop herbicides due to the increase in plant chemical resistance.
‘‘It is important that applicators pay attention to selecting the correct nozzle and water rate to maximise the placement of pre-emergent herbicides, such as Boxer/Treflan/Sakura, through the stubble and to the soil,’’ Mr Day said.
‘‘For many growers this will mean increasing the water rate to at least 90 to 100 litres per hectare.’’
Water quality issues and mixing order for pesticides were also addressed, along with spray drift reduction strategies and changes for product labelling.
Mr Day said the timing of the training event was perfect for a discussion about pre-emergent herbicide programs for 2016 and farmers took the opportunity to seek advice about modifying their existing spray equipment with the appropriate nozzles for maximum efficacy.
Riverine Plains extension officer Dr Cassie Schefe said farmers travelled from as far afield as Dookie, Barooga, Culcairn, Henty and Wagga Wagga to gain more knowledge about using the right chemical, placed in the right spot at the right time.
Dr Schefe said the training day was supported by the Grains Research and Development Corporation which funds the Maintaining Profitable Farming Systems with Retained Stubble in the Riverine Plains Region project.
The day concluded with farmers inspecting a range of self-propelled and trailing spray equipment from Goldacres, O’Connors Farm Machinery, CJ and LH Wiesner, Hutcheon and Pearce, Agrifac Australia and Burando Hill.