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Catalogue: GRDC Final Reports
Grain yields were increased only slightly with variable rate (VR) application using the N-Sensor but showed potential for mapping weeds... To increase the uptake of PA for better economic returns, there is a need to increase support for growers, advisers and the PA industry to improve skills in analysis of data layers to design and implement variable rate treatments... The planned outcome of this project was to increase returns to growers by improved understanding and management of within-paddock variability, and validation of PA systems under southern Australian conditions using large-scale trials...
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Catalogue: Ground Cover
The Agricultural Biotechnology Council of Australia (ABCA) is a joint initiative of Ausbiotech, CropLife Australia, the GRDC and the National Farmers' Federation... Through the creation and sharing of research and knowledge, ABCA's work aims to place biotechnology and gene technology into context as another invaluable innovation for Australian agriculture, ensuring that science guides public policy for the future of farming... The survey showed that growers who grew GM canola were able to achieve the following benefits: more effective weed control, reduced overall pesticide use and herbicide resistance risks, improved farming practices (such as enhanced conservation tillage) and a reduced environmental footprint compared with triazine-tolerant canola...
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Catalogue: GRDC Research Summaries
More than 1300 grower surveys were conducted to inform the GM Canola Impact Survey... The survey examined adoption patterns; agronomic, economic and environmental impacts; and changes in attitude to the concerns regarding co-existence of GM and non-GM canola production systems... Concerns relating to co-existence failed to materialize with the majority of GM canola and non GM canola growers reporting no impacts on their farming operations...
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Catalogue: GRDC Publications
Soil organic matter contributes to a range of biological, chemical and physical properties of soil and is essential for soil health... Soils rarely reach their theoretical potential for organic matter storage (see Figure 1.7)... In soils with low clay content the amount of humus and resistant soil organic matter is increasingly important to nutrient exchange because its large surface area gathers (adsorbs) cations from the soil solution, holding nutrients that would otherwise leach...
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Catalogue: GRDC Publications
Soil organic carbon makes up about 58 per cent of the mass of organic matter and is usually reported in a soil analysis report as the concentration (i.e. per cent) of organic carbon in soil (see Chapter 1 for more detail)... If a soil has a significant amount of gravel or stone material, this fraction is removed before analysis with the final soil carbon or nutrient assessment being only representative of the mineral component of the remaining soil... Understanding how organic matter cycles through the soil and what drives its accumulation and loss is critical to maintaining it at optimal levels within agricultural systems...
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