Release Date 01 April 2015
During the summer of 2014/15, SACOA set out to find the best herbicide and adjuvant combinations for controlling difficult weeds using in-field efficacy trials.
A number of independent replicated field trials have now been completed across northern NSW, southern Queensland and Western Australia.
The results have provided some interesting takes on traditional herbicide mixtures and proved the role of different adjuvant types – emulsified mineral oils, esterified seed oils, non-ionic surfactants and soyal phospholipids – in spreading and penetrating actives on leaf surfaces.
The addition of glyphosate to Triclopyr + ester mixes substantially improved control, particularly early brown out two weeks after application.
Using a high emulsifier loaded mineral oil with spreading and droplet survival properties such as ENHANCE® or ANTIEVAP® proved most effective with triclopyr alone and glyphosate mixtures.
In mixed populations (melon + eragrostis) grass weed control was not impacted when using a high emulsifier loaded mineral oil such as or ANTIEVAP® or ENHANCE® at 1%.
Figure 2: Glyphosate 1.5L + Garlon 80ml + 2,4D 500ml (lv ester 680) + Ally 5g + Enhance 1.0%, 8DAT on 16.12.14
Figure 3: Glyphosate 1.5L + Garlon 80ml + 2,4D 500ml (lv ester 680) + Ally 5g + Liberate 0.5%, 8DAT on 16.12.14
Figure 4: Untreated control, 8DAT on 16.12.14
T. Boyes AgVivo Agronomy, York Feb 15
T. Boyes AgVivo Agronomy, Quairading Dec 14
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This document should act as a guide only and no purchase or usage decisions should be made based on the information provided without obtaining independent, expert advice. SACOA and contributors do not necessarily recommend or endorse any products or manufacturers referred to. SACOA Pty Ltd will not be liable for any loss, damage, cost or expense incurred or arising by reason of any person using or relying on the information contained in this document. More information is available from SACOA via sacoa.com.au or 08 9386 7666, or by contacting your local reseller.
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