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GRDC 2014 Research Summaries

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The mid North High Rainfall Farming Systems Group covers the major high rainfall zone of the mid North of South Australia while the Alkaline Soils Group of Yorke Peninsula covers both high rainfall farming systems down the spine of the Peninsula and lower rainfall areas as well... While cereals crops predominate in the farming systems of both regions based on areas grown and the full suite of pulse and oilseed crops are grown as well, providing nitrogen and disease breaks which result in cereal yields nearing close to maximum water use efficiency... Growers will achieve good crop establish...
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Cropping remains risky in these environments and the Low Rainfall Regional Cropping Solutions Network has identified the need to develop farming systems with lower input costs... Within Europe and the USA significant research has been conducted into Low Input Sustainable Farming (LISA:USA) and Low input farming systems (LIFS: Europe)... To comprehensively investigate what research has been conducted and how the outcomes of this research can be integrated into grain grower practices within the low rainfall zones of the GRDC southern region;..
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Research has shown that this can increase yields due to the Sfertilisation effect of CO2 but leaf nitrogen and grain protein levels in cereals reduce under elevated CO2 (eCO2).Reduction in grain protein lowers the quality of grain that is used for grading and the marketability of wheat grain will be impacted... There is also evidence that the composition of proteins in grain is altered and this has been shown to have negative effects on end-product quality, such as bread... Despite results from Australian and international research showing a consistent decline in grain protein under elevat...
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Project SummarySpring frosts that coincide with heading of wheat or barley crops can cause extensive losses by damaging parts of the spike that would otherwise produce grain... There are large yield losses in some years even with the best avoidance strategies in place... Genes that control flowering behaviour will play a key role in any holistic approach to reduce the impact of spring frosts on Australian cereal crops - through management of heading date to reduce frost risk, through yield stabilisation and potentially by influencing intrinsic frost tolerance at the time of flowering...
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The project will address three key problems cited by GRDC:1) the need to reduce reliance on fertiliser nitrogen; 2) managing herbicide resistance; 3) improving integration of livestock into cropping systems... Activities in Year 1 addressing the issues will involve: (a) A project reference committee chaired by a GRDC Southern Panel member and with representatives from NSW DPI and Southern Farming Systems, CSIRO and Holbrook Landcare Network will be established to consider the results from a review of past and current research of N fixing break-crops in the HRZ acid soil zones, and feedback...
" Brendan Griffiths PhD Scholarship.. Researcher's Name: Mr Brendan Griffiths Organisation: University Of New England Email: Phone: Fax: Project Code: UNE00018 Contract Start: 6/1/2012 Contract End: 6/30/2013.. Research..
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Plants lose most of their water through stomata, the same valves that also regulate the entry of carbon dioxide into leaves and photosynthetic organs... Although plants tend to coordinate stomatal conductance and photosynthetic capacity, significant genetic variation in transpiration efficiency, the ratio of photosynthesis to transpiration, has been demonstrated in many species, including wheat... Elucidating the genetic determinants of this variation is necessary to the design of genotypes tailored to different rainfall patterns and better able to optimise the use of water for maximum gro...
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For two consecutive years (2011 and 2012) YDVs have been one of the major production issues in wheat in high rainfall areas of the southern region including Tasmania, Victoria, and Western Australia... One of these, barley yellow dwarf virus-PAV (BYDV-PAV) vectored mainly by the aphid Rhopalosiphum padi, has been considered the most damaging species to wheat worldwide including Australia... The objectives of this project are: i) to establish one or two sites where infection can be consistent (naturally or through some type of spreader technique); ii) to test current varieties adapted to hi...
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Despite the prolonged chemical onslaught against wild radish, it persists within farming systems... With funding from the Weeds CRC (2005-08 Molecular Control of Reproduction in Weeds) an initial proof-of-concept study showed that targeting seed production through interference with the molecular basis of fertilisation could form the foundation of practical alternative weed control strategies... Subsequent investments from the GRDC, Australian Weeds Research Centre, University of Melbourne and the CSIRO have confirmed the findings of the initial study...
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Much of the uncertainty comes from the variable nature of our climate, whether the enterprise is grazing, cropping, horticulture or bee keeping... Long term data and recent weather data along with seasonal forecasts are valuable in informing growers of system status (e.g. soil water, heat sum, radiation) and probabilities of future events (e.g. planting opportunities, seasonal rainfall, extremes in temperature)... The current version of Australian CliMate has the following analyses: How Often, How Hot -Cold, Season "s progress, How wet N, How likely, How "s El Nino and How "s the Past The ...
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