GRDC Grains Research Update Bendigo 2018
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This page contains update papers presented at the .
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Presented at
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Under-fertilising appears to be a major cause of yield gaps in cropping systems in the high rainfall zone (HRZ). Yield gaps need to take into account seasonal risk and relative crop and fertiliser prices. Soil test critical values should be higher than commonly used because of the higher yield potential of the HRZ....
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NVT interpretation and reporting tools will require continuous development to ensure growers can fully exploit opportunities afforded by the NVT program. A simple web tool for viewing the vast datasets encountered in the NVT system is being developed. An opportunity now exists to help growers understand and interpret Variety by Environment Interact...
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Sclerotinia stem rot is a production issue where spring rainfall is adequate to provide long periods of leaf wetness in the presence of flowering canola crops. If there is a history of sclerotinia stem rot in your district causing yield losses, be prepared to use a foliar fungicide in canola to reduce yield loss....
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Many of the farming system benefits of long fallow can only be quantified at the whole-farm level. • A long fallow-wheat rotation was more profitable than continuous wheat production and a chickpea-wheat rotation when the price of chickpeas was below $800/t. • If using fallow tactically, a good rule of thumb for the southern Mallee is to only sow w...
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Cereal stubble should be thought of as a source of carbon (C) for microbes, not as a source of nitrogen (N) for crops. In no-till systems, only 1% to 6% of the N requirement of crops is derived from wheat stubble. Nitrogen tie-up by cereal residue is not just a problem following incorporation — it occurs in surface-retained and standing-stubble sys...
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Silicon (Si) improves seed germination and alleviates drought stress in lentil crops by regulating osmolytes, hydrolytic enzymes and antioxidant defence systems. Silicon potentiates photosynthetic efficiency and biochemical defence responses of lentils against drought stress. Silicon improves the yield traits in drought stressed lentils....
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Glyphosate resistance has been detected in annual ryegrass and sowthistle. Initial trials suggest significant differences in efficacy between glyphosate products. Treating younger plants at lower temperatures can improve glyphosate efficacy on resistant biotypes. Crop topping with glyphosate is not effective on glyphosate resistant ryegrass....
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Mid-row banding significantly increased recovery of nitrogen (N) fertiliser by wheat in 2016, improving N use efficiency. The impact of mid-row banding on yield and protein has been more variable, but may improve in situations that are more N deficient. Adoption of mid-row banding in-season will require consideration of factors including speed of o...
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Cereal diseases will need to be actively managed in 2018 to prevent yield losses. Growers need to consider variety disease ratings and avoid sowing susceptible varieties into infected stubble (consult a current Disease Guide). Manage the green bridge to minimise rust carryover on cereal volunteers....
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Barely varieties FathomA, La TrobeA, Spartacus CLA, RosalindA, HindmarshA and CompassA are consistently yielding the highest in the Victorian (VIC) Mallee and Wimmera National Variety Trials (NVT)....
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