GRDC Grains Research Update Adelaide 2019
Presented at:
Proceedings of the 2019 Adelaide GRDC Grains Research Update. Topics include how to earn community trust in agriculture, international grain competitors, under-performing sandy soils, emerging pulse root diseases in South Australia and more.
This page contains update papers presented at the .
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Presented at
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• Assessment of seedling emergence at three sites with varying rainfall showed that bifora and bedstraw can persist in the soil for at least three years. • Brome grass and barley grass showed longer seedbank persistence at Karoonda, which experiences low growing season rainfall, and has a soil with a low organic carbon content and low microbial bio...
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• The Australian agvet regulatory system is a scientific, evidence-based risk assessment process which is highly recognised internationally. • Agvet chemicals are nominated for review based on key criteria of concern including human health (toxicology and occupational health and safety), environment, residues and trade, target crop safety and effic...
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• Intensive monitoring of soils and crops over a rotation sequence has identified why crops do not achieve their potential yield. • Reviewing paddock performance at the end of the season and using paddock records is essential for sustained improvement in agronomic performance. • Insufficient nitrogen (N) was the main cause for the yield gap in Nati...
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• Microorganisms associated with the soil, crop residues, roots and in the rhizosphere of cereal crops regulate nitrogen (N) cycling processes, mediate its availability to plants and its losses from the system. • Cereal crops differ in terms of microbial biomass, activity and levels of different N cycling processes within the crop and hence N avai...
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• Match sowing time to varietal phenology to flower in the optimal window and maximise biomass to maximise yield. • Phenology information for most new varieties is now available. • Well adapted hybrids can produce high, stable yields in the low rainfall zone....
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• New hand-held infrared instruments have shown promising results for use in predicting crop nitrogen (N) content of wheat and barley in the field. • New spectroscopic tools offer improved non-destructive predictions of N compared to normalised difference vegetation index (NDVI) and other available tools. • Accurate and robust predictive NIR calibr...
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• The Australian Centre for Field Robotics (ACFR) is one of the largest field institutes in the world and has been developing innovative robotics and intelligent software for the agriculture and environment community for over a decade. • Current agriculture robotics research is conducted for grazing livestock, vegetable, tree crops and the grains i...
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• Herbicides including trifluralin, 2,4-Dichlorophenoxyacetic acid (2,4-D), diuron, glyphosate and diflufenican were detected in soils in more than 30% of paddocks surveyed prior to planting. • Herbicides, when applied at label rates, do not cause significant impacts on soil microbial functions. In particular, glyphosate, even with repeated applica...
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• Know the water limited yield potential and target the soil constraints to crop water-use: Assessing the yield gap relative to expected gains and seasonal risks, alongside identifying the key soil constraints, are important in developing an amelioration plan with cost effective outcomes. • Yield responses to physical disruption are common but not...
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• Pulses are more vulnerable to stress related yield loss just after flowering at the early podding stage; management practices to avoid stress at this stage will help to maximise yield. • In the South Australian trials at the Upper Eyre Peninsula, Mid North and South East the risks posed by late sowing, exposing flowering and podding to heat and w...
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