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Chemistry

Catalogue: Broadacre Field Crops DAFF QLD
Paddock records help: establish realistic target grain yield/protein levels prior to planting modify target yield/protein levels based on previous crop performance, planting soil moisture, planting time, fallow conditions, expected in-crop seasonal conditions and grain quality requirements determine appropriate fertiliser type, rate and application method compare expected with actual performance per paddock and modify fertiliser strategies to optimise future yield/protein levels... Valuable information obtainable from a soil test includes current nutrient status, acidity or alkalinity (pH), soil salinity (Electrical Conductivity (EC)) and sodicity (Exchangeable Sodium Percentage (E)), which can affect soil structure... Water volumes of 800-1 000 L/ha were commonly applied...
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Catalogue: Broadacre Field Crops DAFF QLD
Paddock records help: establish realistic target grain yield/protein levels prior to planting modify target yield/protein levels based on previous crop performance, planting soil moisture, planting time, fallow conditions, expected in-crop seasonal conditions and grain quality requirements determine appropriate fertiliser type, rate and application method compare expected with actual performance per paddock and modify fertiliser strategies to optimise future yield/protein levels... Valuable information obtainable from a soil test includes current nutrient status, acidity or alkalinity (pH), soil salinity (Electrical Conductivity (EC)) and sodicity (Exchangeable Sodium Percentage (E)), which can affect soil structure... Water volumes of 800-1 000 L/ha were commonly applied...
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Catalogue: Broadacre Field Crops DAFF QLD
Paddock records help: establish realistic target grain yield/protein levels prior to planting modify target yield/protein levels based on previous crop performance, planting soil moisture, planting time, fallow conditions, expected in-crop seasonal conditions and grain quality requirements determine appropriate fertiliser type, rate and application method compare expected with actual performance per paddock and modify fertiliser strategies to optimise future yield/protein levels... Valuable information obtainable from a soil test includes current nutrient status, acidity or alkalinity (pH), soil salinity (Electrical Conductivity (EC)) and sodicity (Exchangeable Sodium Percentage (E)), which can affect soil structure... Water volumes of 800-1 000 L/ha were commonly applied...
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Catalogue: Ground Cover
The team at the Adelaide-based Australian Centre for Plant Functional Genomics (ACPFG) has identified for the first time the genes that govern wheat's response to high soil boron - one of the more complex yield constraints because plants need the element but too much is toxic... Varieties that are well adapted to southern soils most likely contain boron-tolerance genes, which, conversely, make these varieties poor performers in northern soils since the genes may restrict the plant's access to boron, which in these soils is already limited... The discovery, announced in the international science journal Nature , has allowed the development of molecular markers that breeders can now use to select lines with boron tolerance for southern soils and also ensure these genes are not active in northern varieties...
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Catalogue: Ground Cover
An Australian wheat-gene discovery now makes it possible to match wheat genetics with local boron levels.. The team that searched through the wheat genome to identify the boron-tolerance gene examine wheat plants in a glasshouse at the Plant Accelerator, Waite Campus, University of Adelaide... A breeders' 'toolkit' containing diagnostic markers that can distinguish functionally important alleles of the boron-tolerance gene with 100 per cent accuracy is now under development in collaboration with the GRDC-funded Australian Wheat and Barley Molecular Marker Program (UA00143), led by Professor Diane Mather from the University of Adelaide...
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Catalogue: GRDC Updates
In a further study the correlation between rooting depth yield and uptake of B was measured at a B toxic site for three varieties differing in their level of B tolerance... Rooting depth was measured to a depth of 1m using soil cores taken immediately after harvest with soil cores segmented at 20cm intervals... B may not be the primary factor influencing rooting depth and the work of Nuttall et al. indicates that subsoil salinity and sodicity have a greater influence on water extraction from the subsoil than does B. This does not imply that B tolerance is irrelevant but indicates "transect" studies using a single variety need to be complemented by studies utilising isogenic lines to define the effect on yield of subsoil constraints...
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Catalogue: Ground Cover
The team at the Adelaide-based Australian Centre for Plant Functional Genomics (ACPFG) has identified for the first time the genes that govern wheat's response to high soil boron - one of the more complex yield constraints because plants need the element but too much is toxic... Varieties that are well adapted to southern soils most likely contain boron-tolerance genes, which, conversely, make these varieties poor performers in northern soils since the genes may restrict the plant's access to boron, which in these soils is already limited... The discovery, announced in the international science journal Nature , has allowed the development of molecular markers that breeders can now use to select lines with boron tolerance for southern soils and also ensure these genes are not active in northern varieties...
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Catalogue: Ground Cover
An Australian wheat-gene discovery now makes it possible to match wheat genetics with local boron levels.. The team that searched through the wheat genome to identify the boron-tolerance gene examine wheat plants in a glasshouse at the Plant Accelerator, Waite Campus, University of Adelaide... A breeders' 'toolkit' containing diagnostic markers that can distinguish functionally important alleles of the boron-tolerance gene with 100 per cent accuracy is now under development in collaboration with the GRDC-funded Australian Wheat and Barley Molecular Marker Program (UA00143), led by Professor Diane Mather from the University of Adelaide...
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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
Part of the project aims to characterise, assess, and simulate the suitability of current genetics for earlier sowing in Australian farming systems across a range of environments using crop management tools such as APSIM... The PhD project aims to identify how molecular changes within the mitochondria allow plants to continue growth at a range of temperatures... Education and research are critical in developing the 'science push' for sorghum as a health promoting food - this knowledge needs to be interpreted and disseminated to the Australian grains industry (farmers, producers), food products developers, marketers and key government organisations y t i c a p a C & s l l i k S g n i d l i u B ...
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