Grow­ers urged to test

The Weekly Advertiser Horsham - - Our Wimmera -

Agri­cul­ture Vic­to­ria is urg­ing Wim­mera grain grow­ers to test weeds for her­bi­cide re­sis­tance in an ef­fort to save money as well as im­prove weed con­trol.

The agency co-or­di­nated three work­shops ear­lier this year where her­bi­cide re­sis­tance ex­pert Peter Bout­salis from the Univer­sity of Ade­laide spoke to more than 70 grow­ers.

Dr Bout­salis said while her­bi­cides some­times failed to fully con­trol weeds for a va­ri­ety of rea­sons, grow­ers should avoid as­sum­ing it was due to re­sis­tance.

He said two tests were avail­able to de­ter­mine if re­sis­tance was the is­sue.

He rec­om­mended a ‘quick test’ of whole plants for re­sis­tance to post-emer­gent her­bi­cides af­ter spray­ing, while a seed test was bet­ter to iden­tify re­sis­tance to both pre and post-emer­gent her­bi­cides.

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