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CRT Catalogue Pull-out Feature : CRT Autumn 2014 - Tech Update
www.crt.com.au There's always better value at CRT. Go to www.crt.com.au to register and receive your next issue via email. Crop Protection Tech Update -- Autumn 2014 Grain growers and advisers across Australia are currently reviewing weed management strategies for the coming winter crop. Having a good strategy in place and making the most of each weed control opportunity will be key factors in achieving clean crops and, in particular, coping with the growing problem of Annual Ryegrass resistance. Weeds are becoming harder to control and growers are increasingly adding herbicide spikes to their knockdown sprays but there are other, more cost effective options. Research across southern Australia has shown adding the pre-emergent herbicide Boxer Gold® to Spray.Seed® , Gramoxone® or glyphosate products, can increase the knockdown effect on seedling Annual Ryegrass by up to 19 per cent (Figure 1). This unique benefit is a real advantage for growers looking to extend the control of Annual Ryegrass. "Boxer Gold is a premium, emulsifiable concentrate formulation that mixes readily in water and has shown to have excellent tank mixing compatibility with these knockdowns," said Paul Chatfield, Syngenta Technical Services Lead. "The trial compared Boxer Gold tank mixes with Spray.Seed and glyphosate products, finding weed control was fastest when Boxer Gold was tank mixed with Spray.Seed." Research shows that the foliar activity of Boxer Gold is at its optimum when applied to one to two leaf Annual Ryegrass plants, so the weed growth stage when spraying is important to gain the full benefit. "Larger weeds will intercept more of the Boxer Gold, meaning knockdown activity is maximised but at the expense of soil coverage, potentially compromising Boxer Gold's pre-emergent activity. This is an important management consideration for growers." "Boxer Gold also gives growers peace of mind when dealing with tough knockdown conditions. However, it won't replace the need for any of the non-selective herbicides and, as with all best practice principles, registered rates of non-selective herbicides should always be used," Paul said. To take full advantage of these tank mixes, growers will need to assess the situation at hand. Growing conditions at application, the non-selective herbicide partner, seedbed conditions, stubble load and weather conditions all need to be taken into account. Paul also emphasised that mechanical incorporation of Boxer Gold is still required within seven days of herbicide application. To fi nd out how to increase knockdown effect on Annual Ryegrass on your property, speak to your CRT Local Bloke. Product names marked ® or TM are Trademarks of a Syngenta Group Company. How to increase knockdown effect on Annual Ryegrass Whilst every care is taken in the preparation of the information contained in this Tech Update, it is general information only and has been prepared without taking into account your specific crop protection requirements. Combined Rural Traders Pty Ltd and its related entities will not, to the extent permitted by law, be liable for any loss, damage, injury, costs or expenses suffered by you or a third party directly or indirectly as a result of your reliance wholly or in part on this information in relation to the choice and use of manufactured products by you, irrespective of whether or not such products are used in accordance with the manufacturer's instructions or otherwise and whether or not such products are purchased or obtained at the suggestion of Combined Rural Traders Pty Ltd or any of its related entities (including their employees, contractors and agents). Knockdown activity of BOXER GOLD in the control of Annual Ryegrass (Z11 to Z13) when applied in tank mixtures with SPRAY.SEED or Roundup PowerMAX* *Data is mean of three replicated field trials conducted across Southern Australia. **DAT= Days After Treatment Fig 1. Boxer Gold can increase the knockdown effect on seedling Annual Ryegrass by up to 19 per cent.
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