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CRT SA : Spring Big Brands 2012
Close monitoring – the key to a successful crop Weed management Selective spray topping and late weed management Is there value in spraying crops late? Weed management, according to all the research, is a numbers game and late season management can always be a risky option especially using products which can reduce final yield or have long withholding periods for harvest. Crops where weeds have managed to escape either through resistance, poor application or late germination can have a serious effect on yield and sample quality or with just trying to manage harvest because weeds are green. In the past there has been industry wide concern over the incorrect use of herbicides to assist with harvest management and control of weeds late in the crop. The following products/ actives are registered for this late use pattern: • Roundup Attack and Roundup Power Max: Wheat and a range of pulse crops (eg field peas, faba beans, chick peas and lentils) • Reglone (diquat): wheat, barley, canola and a range of pulse crops • Gramoxone (paraquat): a range of pulse crops only. • For more detailed information on the use of the above products contact your local CRT agronomist for detailed recommendations. Roundup Attack • The most extensive glyphosate label on the market with more use patterns • Higher loaded 570g/L formulation for increased efficiencies • Patented penetrator that delivers faster brownout and better final weed control • Lower foaming and viscosity means less time filling up In previous CRT Tech Updates, fleabane management was discussed from a whole of season management perspective. This is still true in the middle of the growing season for southern producers and in fallows in summer cropping regions. Making sure of the control of this weed early is essential. It will be essential to control fleabane as the season warms up and this weed really gets going. Discuss in-crop management options with your CRT agronomist. The use of selective herbicides with some residual activity such as Lontrel can still have a fit before canopy closure as do ‘phenoxy’ based herbicides and products such as Tordon 75D later in the season in cereal crops. Fleabane is a tough weed but the maximum germination occurs at about 20°C although, as we have seen over the past couple of years, it is able to establish earlier than expected. If fleabane or other weeds are present pre-harvest then Roundup Attack can be used as a harvest aid in a number of crops including wheat, field peas, faba beans and a number of other pulse crops. One of the major issues for many farmers with legume based pastures will be management of fleabane later in the season. You should also ensure that if you are looking at selling livestock that the grazing, export and slaughter intervals are met. A new product in the armoury to manage fleabane and a range of other broad leaf weeds is Sharpen WG (700g/kg saflufenacil) in either summer or winter fallows. While Sharpen is an excellent product for the management of fleabane it needs to be used against small weeds (4– 6 leaf) and mixed with a premium glyphosate such as Roundup Attack to get the best results. As with any fallow product users will need to ensure that the plant back and rotation recommendations are followed so that subsequent crops are not affected by Sharpen. Some of the key plant back periods are cotton (6 weeks) and canola and sunflower (16 weeks). Other crops including sorghum, wheat, barley, cowpeas and soybean have plant backs of a day or less, but as with any chemical check the label for use and contact your local CRT agronomist for the latest up-to-date information. It will be essential to control fleabane as the season warms up and this weed really gets going. poor application or late germination can have a serious effect on yield.
Tax Time Savings May 2012
Super Summer Savings 2012