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Environmental issues

Catalogue: GRDC Updates (West)
Forecasts made at this time of year have varying degrees of skill and we advise users to consult the seasonal forecasts as they are updated monthly and the skill improves closer to the season... Verification of the 2011 SSF forecasts In terms of the 2011 seasonal forecasts the SSF gave a drier outlook to that which generally eventuated early in the season, but successfully forecast a wetter outlook for spring which assisted farmers with fertiliser decisions mid-year... AIMS The aim of this paper is to review the main climate indicators in 2011, and what is shaping in 2012...
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Catalogue: GRDC Factsheets
a chemical analysis of recycled organics is essential in determining the potential nutrients available, calculating application rates and identifying potential benefits and risks... Soil contamination While recycled organics may improve soil health the potential build-up of some nutrients and heavy metals and other chemicals in the soil is an issue that needs to be considered and managed... Soil testing is essential to monitor changes in soil and adjust application rates ...
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Catalogue: GRDC Factsheets
a chemical analysis of recycled organics is essential in determining the potential nutrients available, calculating application rates and identifying potential benefits and risks... Soil contamination While recycled organics may improve soil health the potential build-up of some nutrients and heavy metals and other chemicals in the soil is an issue that needs to be considered and managed... Soil testing is essential to monitor changes in soil and adjust application rates ...
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Catalogue: GRDC Factsheets
a chemical analysis of recycled organics is essential in determining the potential nutrients available, calculating application rates and identifying potential benefits and risks... Soil contamination While recycled organics may improve soil health the potential build-up of some nutrients and heavy metals and other chemicals in the soil is an issue that needs to be considered and managed... Soil testing is essential to monitor changes in soil and adjust application rates ...
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Catalogue: GRDC Publications
Overall, wheat diseases have the potential to cause very significant costs for farmers... The estimates of potential losses assume that for each disease, it is the only one that develops... The drier seasons of the past decade (Section 3) would not favour these two diseases and is the likely cause of their reduction in importance...
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Catalogue: GRDC Publications
Overall, barley diseases have the potential to cause very significant costs for farmers... Incidence is 30 per_cent frequency in 30 per_cent of the area, so that the average incidence of the disease affecting the crop is 9 per_cent... Overall, breeding contributes more than 25 per cent of the control for 14 diseases, cultural methods for 32 diseases, and pesticides for six barley diseases...
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Catalogue: GRDC Updates (West)
The decline in profitability of the high rainfall farm is driven by declining terms of trade rather than the yield reductions under predicted climate change... Farmers and advisors still require a simple method to estimate yield potential using a simple spreadsheet or 'back of the envelope' type calculations... The soil moisture values calculated by STIN XL for sowing dates later than 1 April were seen as an underestimate...
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Catalogue: GRDC Final Reports
Current farming systems expose farmers to heavy losses during good seasons when the risk of crop failure is low and returns could be maximised by additional levels of N... The SOI phases, originally developed in Queensland, can be used to identify a set of past years of similar climatic characteristics (analogue years) to the present season... Seasonal climate forecasting is a crucial tool for growers to micro-adjust and governments to macro-adjust economic strategies and policies to reduce impacts on private, estate and national economic objectives...
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Catalogue: GRDC Updates
Graph two is for a heavy clay Black Vertosol from Spring Ridge; results show the plant available water capacity (PAWC) is 272mm... Rooting depth should be determined through perusal of physical and chemical data and the physical observation of roots and water extraction through soil coring and/or electronic monitoring... Simulation of water storage using the >100 year climate record shows that a short fallow from wheat (assuming a dry soil profile at harvest in November of the previous year) results in a 50% chance of at least 110mm (range of 0-300mm) of water being available for an April planting at Spring Ridge and 80mm (range of 0-180mm) at Nyngan (Figure 8)...
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Catalogue: Nuffield Scholar Reports
This species of grass was most commonly used in an intensive grazing dairy system where it would run 40 head of cattle on 0.6 ha for three days with a rest period of 28-32 days (Moreira, 2012)... Recent reports would suggest that psyllid damage is sometimes reduced and stocking rates have in places returned to normal... As shown below FTAI has the ability to increase the percentage of cows in calf...
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