Resistant rusty grain beetles, one of the flat grain beetles, have been found throughout the grain supply chain, suggesting the need for adoption of area-wide integrated pest and resistance management.
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Australian growers have relied heavily on phosphine fumigation to disinfest stored grain and meet market expectations for high-quality grain with nil tolerance to insects. However, reliance on one chemical over a long period of time has led to resistance.
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The practice of requiring a phosphine gas reading of less than 0.3ppm in a spear sample taken from within the grain threatens costly rejection of truckloads of grain, including for operators who are following phosphine label directions.
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With care, bags and bunkers can provide a practical solution to the harvest logistics challenge. High-quality sealed silos offer top-of-the-range storage, but the boom in demand for on-farm storage means growers are also exploring cheaper options to expand capacity. Bags and bunkers have become a popular, more affordable choice, but growers need to be on their toes to avoid costly failures with these temporary storage solutions.
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Take a sneak peek at some of the storage extension team’s favourite systems. The grain storage extension team regularly meets growers and industry participants on-farm to run workshops and provide specialist advice. Examples of well-laid-out facilities, smart features, ideas and innovations are highlighted here to help inspire other growers who are investing in grain storage infrastructure.
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New testing set to reveal back pressures for Australian grain under aeration. Achieving sufficient airflow is essential for effective grain aeration, and back pressure – the resistance to airflow through the grain – is one of the important variables determining success. But much of the information used to determine aeration back pressure is outdated and was generated under Northern Hemisphere conditions.
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Ground-level fumigation offers safety benefits to growers but takes a new set of skills to get right
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Fumigation results rely on a gas-tight sealable storage to achieve the required gas concentrations and exposure times (C x T) to kill all insect pest life stages. In larger silos (150 to 2000 tonnes) recirculating gases using a small fan during the fumigation ensures rapid, uniform distribution of phosphine gas
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Grain storage specialist Ben White explains the purpose of sealable silos, when to seal them and when to leave them unsealed to prevent condensation issues.
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Investing or expanding on-farm grain storage? Here are the key considerations to selecting the best option.
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