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Catalogue: GRDC Updates
2. Risk vs return of a summer crop strategy Gain an appreciation of the risk vs return of a summer crop strategy... Finally be disciplined and ensure that you tick all the boxes in terms of management to maximise the rotational and financial outcomes from your crop selection decisions... Greg Rummery Greg Rummery Consulting Ph: 0428 259 535 Email: greg@grconsulting.net.au < Keep browsing 0 Responses to Summer crop options in western cropping environments..
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Catalogue: GRDC Media
Setting course to discover barley yield treasure.. On average, Compass has performed 10 per cent higher in yield than Commander , the current leading benchmark malting variety across National Variety Trials... "What we're seeing is that Compass gets into the late reproductive phase a lot earlier than Commander in most environments and sowing dates and does not abort as many potential grains," Mr Porker said...
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Catalogue: GRDC Research Summaries
Activity 1: Estimation of the actual amount of N fixed: In Australia, most estimates of FL-N fixation were determined using indirect methods, e.g. N balance estimates or nitrogenase activity measurements using acetylene reduction assay... While the estimates provide an indication of N fixation potential, they do not provide direct estimates of N fixed... Estimation of the actual amount of N fixed quantify the amount of N fixed - Acombination of 15N isotope tracer methodology and biochemical methods are being standardized to quanity the amount of 15N fixed using soils from South Australia (Calcorosol, Alfisol, Vertisol) and Western Australia (Sodosol)...
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Catalogue: GRDC Research Summaries
Activity 1: Estimation of the actual amount of N fixed: In Australia, most estimates of FL-N fixation were determined using indirect methods, e.g. N balance estimates or nitrogenase activity measurements using acetylene reduction assay... While the estimates provide an indication of N fixation potential, they do not provide direct estimates of N fixed... Estimation of the actual amount of N fixed quantify the amount of N fixed - Acombination of 15N isotope tracer methodology and biochemical methods are being standardized to quanity the amount of 15N fixed using soils from South Australia (Calcorosol, Alfisol, Vertisol) and Western Australia (Sodosol)...
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Catalogue: GRDC Research Summaries
Given low-fertility of Australian soils and high fertiliser prices, it is clear that sustainable, low-input grain production requires cultivars that are efficient in acquisition and utilisation of nutrients, particularly nitrogen and phosphorus as the most critical nutrients in most paddocks... Potential for increasing nutrient efficiency in Australian wheat and barley germplasm will be assessed in this project via large-scale field screening of promising genotypes for nitrogen-use efficiency at a number of locations spanning a range in climate and soil conditions..... Plant pre-breeders are laying the foundation for more nitrogen-efficient varieties of wheat and barley..
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Catalogue: GRDC Updates
" Date: 06.09.2011 Targeting reliable sorghum yields in the western zone - matching row spacing, plant population and hybrid type to the environment... Trials have been conducted in two seasons, 2009-10 and 2010-11... At the end of the second season preliminary results indicate that the low tillering, high staygreen hybrids have been unable to compensate in high yielding seasons (4-6 t/ha) and seasons with significant levels of pre-flowering stress to achieve yields similar to hybrids with even a moderate level of tillering...
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Catalogue: GRDC Final Reports
The objective of the project was to explore methods to integrate new marker technologies, simulation modelling and statistics with the aim of increasing the rate of genetic gain in breeding programs focused on complex traits such as grain yield... To the end the main areas of research were 1) developing the capacity to detect quantitative trait loci (QTL) in breeding populations and 2) using simulation modelling to enhance plant breeders' understanding of complex traits and genotype x environment (GxE)... The objective of the project was to explore ways of helping crop improvement programs use new technologies to improve progress for complex traits...
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Catalogue: GRDC Final Reports
Frequency distributions for carbon isotope discrimination ( ) means measured on random doubled-haploid lines from the Cranbrook/Halberd, Sunco/Tasman, and CD87/Katepwa mapping populations... Estimated additive (a) genetic effect, percent additive genetic variance, and chromosomal location (and corresponding 95% confidence intervals in parenthesis) of QTL for carbon isotope discrimination measured on random doubled-haploid progenies from the Cranbrook/Halberd, Sunco/Tasman, and CD87/Katepwa populations evaluated across two to three irrigated environments... Genotype and genotype environment variance components for stomatal conductance (gs, preand post-flowering and combined) and canopy temperature (CT) measured for the Cranbrook/Halberd population evaluated in three environments...
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Catalogue: GRDC Publications
6 AGP00010: Validation of late sowing to identify heat stress tolerance in wheat and investigation of QTL for heat stress tolerance .................................................................................................................................................................................... In summary, the project will provide valuable genotype information and deliver new genetic resources to Australian wheat breeders... Overall, the approach has a strong applied orientation aimed at crop improvement...
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Catalogue: GRDC Media
New research findings could lead to more accurate interpretation of phosphorus soil tests from Western Australian cropping paddocks, and may save growers money through the recommendation of lower phosphorus fertiliser rates... The research has been conducted by Department of Agriculture and Food (DAFWA) and Murdoch University researchers under the Grains Research and Development Corporation (GRDC) project 'Better fertiliser decisions for cropping systems in Western Australia'... The aim of the project 'Better fertiliser decisions for cropping systems in Western Australia' is to help growers and advisers maximise returns from their investment in fertiliser, and better define critical soil concentrations for nitrogen, phosphorus, potassium and sulphur, as well as minimise the loss of nutrients to the environment...
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