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water availability

Catalogue: GRDC Updates
The agreement, achieved through the NWI was based on a triple bottom line approach (balancing social, economic and environmental)... The MDBA must follow the process described in Division 1 of Part 2 in drawing the Basin Plan and setting the SDLs on a valley by valley basis... The MDBA are responsible for delivering the SDLs on a valley by valley basis, the States will have the responsibility of implementing resource plans which are basin compliant, meaning the States will have to determine where the cuts (if any) are made...
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Catalogue: GRDC Publications
Influence of fungicide rate (mean of fungicide products - four site mean) Stem rust control assessed over the four trial sites revealed that using high rates was essential for the control of the disease, even if the fungicide had been applied prophylactically (before infection was visible in the crop)... Influence of cultivar resistance and fungicide application (Prosaro ) on yield and stem rust severity measured on the flag sheath 18 days after fungicide application at early dough (GS82) and assessed at mid dough - physiological maturity (GS85-90) - Bairnsdale, Gippsland, Victoria, 2010... The yield potential for the crop with no nitrogen applied is estimated at GS30 from the results of numerous of trials conducted in that region where NDVI at GS30 is divided by the number of growing degree days (GDD) greater than 0 C since planting, referred to as the INSEY units (in season estimate of yield)...
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Catalogue: GRDC Media
Key drivers of change in the next five years for the Grains Research and Development Corporation (GRDC) include water availability, productivity growth, grower terms of trade, grain market dynamics, customer expectations and farm demographics... GRDC Board Chairman Terry Enright emphasised that the GRDC's fourth five year strategic plan, "Prosperity Through Innovation", would encourage stakeholders and research partners to meet clearly defined performance measures and outcomes so that growers could adopt technologies and practices to remain globally competitive... Noting the report, Mr Enright said that with GRDC's major levy funding source being wheat, which may double to up to 25 million tonnes this year, the GRDC would, hopefully, begin its five year plan with a positive outlook. "..
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Catalogue: Ground Cover
Farming 260 hectares at Yalca in northern Victoria, the Thorntons grow maize over summer, as well as wheat, barley, canola and faba beans over winter, all under surface irrigation... Ray works on average yields of 12 tonnes/ha for maize and says plant population is "king" in achieving yield targets... In August, Ray will spray weeds and in September will use the strip tiller to band phosphorus at 7 to 8cm and nitrogen at nearly 30cm below the soil surface, then sow maize later with a 'pop-up' or starter fertiliser...
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Catalogue: Nuffield Scholar Reports
The report proposes the idea that saline water, defined as having an electrical conductivity greater than 1.5 deciSiemens per metre (dS/m) (960 parts per million), has a part to play in filling the void of future losses of surface water... The aim of the report is to investigate if saline water can be successfully used without desalination, and what practices are required to reduce the effects of it on the crops and catchments they are applied to... Drip irrigation systems were by far the most common irrigation system using saline water...
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Catalogue: Ground Cover
The recently developed iPad application SoilMapp uses GPS to identify soil water-holding information for specific locations... Mr Dalgliesh, who has worked on the APSIM (Agricultural Production Systems sIMulator) model for more than 20 years, says experience shows that increased soil information increases the chances of achieving a season's optimum yields and profits... Mr Dalgliesh says the challenge is where current research comes in. Information on the water-holding capacity of an additional 245 soils has been added to the APSoil database ( www.apsim.info/Wiki/APSoil.ashx ), bringing the total to more than 900...
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Catalogue: GRDC Updates
With increasing interest in obtaining real-time information on soil water status and increasingly limited labour to undertake intensive gravimetric monitoring a study was undertaken to investigate technologies with potential to improve delivery of information to farmers on the cracking clay soils... A suite of readily available monitoring technologies were evaluated for their ability to accurately measure soil water across the range of moisture contents, suitability for use on cracking clay soils and appropriateness for deployment in commercial agriculture... Conclusions and recommendations a) Devices for soil monitoring: In-situ devices that have relatively small zones of measurement and rely on good soil/sensor contact to measure soil water are at a disadvantage in shrink/swell soils where soil movement and cracking are typical...
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Catalogue: GRDC 2014 Research Summaries
Previous soil research and extension has resulted in more than 1,000 farmers and consultants receiving basic training in soil-water management and more than 900 Australian soils being characterised for water-holding capacity (PAWC)... Whilst the information is now being used as the basis for crop management decisions around Australia, there still remains a need to provide more training and field characterisation to meet on-going demand... The demand is the result of increasing adoption of technologies that allow growers to monitor soil water in real time and the use of decision support tools that allow growers and advisors to investigate crop management options based on seasonal climate and resource status (water and nutrients)...
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Catalogue: GRDC Updates
The paper presents a predominantly Victorian-based review of the events of 2009/10 and discusses the water management outlook for 2010/11... The Victorian Murray and Goulburn systems experienced rapid allocation improvements during September and October 2009 as spring rains brought welcome storage inflows (Figure 1 )... Under new carryover rules for the Goulburn, Murray and Campaspe systems, irrigators can carry over all water in their allocation bank accounts at the end of the season and start the irrigation season with equivalent to 100% allocation and then receive allocation improvements across the season...
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Catalogue: GRDC Updates
In the wheat-belt of eastern Australia, rainfall shifts from winter dominated in the south (South Australia, Victoria) to summer dominated in the north (northern New South Wales and Queensland)... In eastern Australia wheat crops are exposed to contrasting climatic conditions during the critical period for grain formation i.e. a window of about twenty days before and ten days after flowering, which affect yield potential, and the efficiency in the use of water (WUE)... Water availability is limited by low and highly variable rainfall, often in combination with soils where plant available water is restricted by physical and chemical constraints for root growth and function...
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