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field soil

Catalogue: GRDC Media
Soils across the northern region are sending a clear message to growers - good seasons and flood events have depleted soil fertility and exhausted soil mineral nitrogen reserves built up during dry seasons of the mid-2000s... Dr Dowling says long term declines in soil fertility came together with short term seasonal conditions to take growers by surprise last year when protein levels came in lower than expected... Dr Dowling says the "set and forget" nitrogen strategy may need to be reviewed as the season progresses to ensure the crop has enough nitrogen to finish well...
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Catalogue: GRDC Updates
It is extremely important to use farm management practices that maintain organic matter levels, especially biologically available organic matter in our soils... Australian soils are inherently low in biologically available carbon carbon inputs have a major influence on soil biological activity... For an introduced biocontrol agent to be effective it must first survive, establish, acclimatize and grow in field soils and interact with the pathogenic organisms alone or in the presence of plant...
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Catalogue: GRDC Research Summaries
We propose to use a polyphasic approach involving (i) comparative analysis of high- and low-suppressive soils, (ii) pre-treatment or prior exposure of soils to factors that have been attributed to the development of disease suppression and (iii) amplification of target regions prior to high-throughput sequencing... The use of direct soil DNA/RNA extraction technologies will help overcome the bottlenecks associated with the culture based methods... We propose to establish close working links with other projects in SBI-Theme 3 for field sites used, consistency in methodologies and complementary research approaches...
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Catalogue: GRDC Research Summaries
We propose to use a polyphasic approach involving (i) comparative analysis of high- and low-suppressive soils, (ii) pre-treatment or prior exposure of soils to factors that have been attributed to the development of disease suppression and (iii) amplification of target regions prior to high-throughput sequencing... The use of direct soil DNA/RNA extraction technologies will help overcome the bottlenecks associated with the culture based methods... We propose to establish close working links with other projects in SBI-Theme 3 for field sites used, consistency in methodologies and complementary research approaches...
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Catalogue: Ground Cover
Pursuing the mystery of disease-suppressive soils.. The GRDC is funding a suite of projects to identify and harness the biological traits associated with suppressive soils.. Mechanisms of disease suppression are identified using RNA sequencing technology to examine the genes that are switched on in suppressive and non-suppressive soils prior to sowing and six to eight weeks after sowing, when young plants can be infected by R. solani ...
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Catalogue: Ground Cover
The GRDC is funding a suite of projects to identify and harness the biological traits associated with suppressive soils.. The project is looking to identify the key organisms involved in the suppression of root lesion nematodes and which soils might best support these organisms... Mechanisms of disease suppression are identified using RNA sequencing technology to examine the genes that are switched on in suppressive and non-suppressive soils prior to sowing and six to eight weeks after sowing, when young plants can be infected by R. solani ...
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Catalogue: GRDC Updates
Soil organisms (sometimes referred to as the soil biota) carry out a diverse range of processes that are important for the maintenance of soil fertility and soil health, and directly impact on the sustainability of a cropping system... Recent work on sugarcane in Australia has shown that soil amended with sugarcane residue remained suppressive to root-lesion nematode for at least 47 weeks (Stirling et al. 2005), and that when this material was mulched on the soil surface, the soil immediately beneath the mulch was highly suppressive to the nematode (Stirling et al ... Early results suggest that biological mechanisms of suppression to root-lesion nematodes are operating in many of these soils...
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Catalogue: GRDC Final Reports
In line with previous research findings using rice, the wheat experiments showed overall consistency among genotypes in root penetration between a wax layer in soil columns and a hardpan in the field... 2. Wheat varieties differ in root penetration of a wax layer and of field soils Seminal and nodal root penetration ability through thin wax layers was evaluated in 24 Australian wheat varieties and breeding lines in soil columns... 5. Substantial variation among DH lines in root depth below the wax layer and in the field Study of the genotypic variation in hardpan penetration ability within the same genetic background was undertaken using a DH population (N = 143) of the cross between Halberd (good) and Cranbrook (poor)...
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Catalogue: GRDC Media
Soils across the northern region are sending a clear message to growers - good seasons and flood events have depleted soil fertility and exhausted soil mineral nitrogen reserves built up during dry seasons of the mid-2000s... Dr Dowling says long term declines in soil fertility came together with short term seasonal conditions to take growers by surprise last year when protein levels came in lower than expected... Dr Dowling says the "set and forget" nitrogen strategy may need to be reviewed as the season progresses to ensure the crop has enough nitrogen to finish well...
Related categories:
Catalogue: GRDC Final Reports
The effects of type of stubble management and tillage on microbial groups and biological processes related to carbon (C) turnover and biological fertility were quantified in field and glasshouse experiments on two soil types in South Australia... One of the aims of this project was to provide detailed knowledge about changes in microbial diversity and functional capability as influenced by type of stubble management in different soil types... The study is based on research at two sites varying in soil type and environment only...
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