Ground Cover Supplement : GC Supplement - Innovation and technology
CHOOSING THE RIGHT APPROACH Despite the title The WA Guide to High Moisture Har vest Management, Grain Storage and Handling referring to Western Australia, this comprehensive guide, written by Nigel Metz, a projects officer with the South East Premium Wheatgrowers Association (SEPWA), provides information of relevance to graingrowers across Australia. Most of the publication is dedicated to information to help growers select and use the most appropriate approach to grain-moisture management during harvest for their cereals, including malting barley. This is supported by eight farmer case studies, each focused on a different method of dealing with high-moisture grain. Other options such as blending and swathing are discussed. "Research in the Esperance area has shown that on average there is a 0.5 per cent yield loss for each day a crop remains unharvested," Mr Metz says. "In a 5000- tonne cereal program, that equates to 25 tonnes of lost production due to shedding, head loss and exposure to the elements." The book introduces the risks and economics associated with delaying harvest or harvesting earlier and using one or more of the high-moisture management options, blending, swathing, aerated storage and drying. "In many situations investment in equipment to deal with high- moisture grain to allow earlier harvest is more effective than increasing harvester capacity as a method of reducing a grower's exposure to the risk of weather damage," Mr Metz says. "The ability to manage high-moisture grain often allows a greater number of harvesting hours per day, compared to waiting for grain to fall below 12.5 per cent moisture." An online tool, the SEPWA Harvest Calculator, has been developed (go to www.sepwa.org.au and click on harvest calculator). This economic model examines the daily yield loss over time in relation to the financial effects on the overall cropping program's profitability, in relation to the individual grower's information. It allows a range of scenarios to be evaluated and compared. "The model works on the theory that a crop can be harvested sooner by harvesting for longer periods each day under high-moisture conditions, limiting exposure to yield and quality loss," Mr Metz says. The WA Guide to High Moisture Har vest Management, Grain Storage and Handling was published in late 2006 by the CBH Group and SEPWA with assistance from the GRDC and the Department of Agriculture, Fisheries and Forestry. Copies are available free from Ground Cover Direct, free phone 1800 11 00 44, or the CBH Group. GRDC Research Code SEP00003 More information: Nigel Metz, 08 9083 1115, firstname.lastname@example.org Nigel Metz HARVEST/STORAGE GROUND COVER INNOVATION AND TECHNOLOGY 20 Fumigant glows with advantages ALTERNATIVE FUMIGANTS ARE NEEDED THROUGHOUT THE SUPPLY CHAIN. GLO2, BASED ON NATURALLY OCCURRING CHEMICALS, IS MEETING THE NEED the Use OF two naturally occurring chemicals has resulted in a new fumigant that offers considerable health and safety and environmental advantages while continuing to provide high levels of pest control. having developed the fumigant, csIRO entomology and the GRDc have funded a project to compile the comprehensive data required to achieve product registration by the australian Pesticide and veterinary Medicines authority (aPvMa). Phosphine has been the mainstay of insect control in stored grain since the 1950s. however, the need to find a new fumigant has been driven by an increasing number of insects showing signs of phosphine resistance and by other fumigants, methyl bromide, dichlorvos and carbon disulphide, being phased out due to health and environmental concerns. this is leaving the grain storage and handling chain with a lack of fumigation products. csIRO entomology has carried out several successful GRDc projects investigating fumigant alternatives. the most promising for australian farm use is GLO2, the working name for a GRDc- csIRO patented product containing 95 per cent ethyl formate and five per cent synergist. GLO2 offers a suite of advantages over current fumigation products. Pest control – high levels of efficacy have been recorded in eradicating grain pests at all life stages. Formulation – GLO2 is formulated as a liquid, so it can be easily transported and sprayed directly onto grain in stores or during loading. It vaporises on contact and is suitable for use in both sealed and unsealed silos. GLO2 breaks down into compounds that naturally occur in grain, leaves virtually no residues and has no effect on grain quality. Speed – GLO2 fumigation takes overnight to a few days to complete and there is no expected withholding periods. Spectrum of use – in addition to fumigation of grain on-farm and in bulk stores, GLO2 is expected to be suitable for fumigating infrastructure, such as buildings and equipment. Safety – in comparison to other fumigants it is safe and simple to use. No specialised handling skills are required. Environmentally friendly – neither GLO2 nor its breakdown products contribute to greenhouse gases or deplete the ozone layer. Registration and commercialisation of GLO2 is expected to be completed by 2010. GRDC Research Code GLO2000011 More information: Paul Meibusch, New Products Manager, GRDC, 02 6166 4500; Julie Carter, CSIRO, 02 6246 4040, email@example.com CSIRO senior researcher Dr Yonglin Ren: alternative fumigants are crucial for the industry.
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