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GRDC Final Reports

Reports from projects funded by the GRDC

Registered items

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Insecticide resistance monitoring within this farming system complex was successfully completed for 2006/07 and 2007/08 and the results used to assess and formulate resistance management strategies... The finding is important, as the presence of resistance through a resistance mechanism already established in the field can result in unsatisfactory control and worsen the situation for the insecticides involved... The aim of the research is to continue to increase what is known about resistance frequencies and mechanisms to allow for accurate resistance detection and effective management str...
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Lupins provide a valuable pulse component of crop rotations in South Australia (SA) and Victoria (VIC) particularly on low fertility neutral to acid sands where other pulse crops do poorly... The total economic benefit of release and adoption of improved lupin varieties in SA and Victoria is estimated at $3.2million per year... There is slight variation in the actual lines retained for further evaluation in each of SA and Victoria depending on how the respective evaluators (J. Egan and I. Mock) viewed their potential in their respective environments...
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The project has produced L. angustifolius lines with lower proportions of seed coats or pod walls for direct use in breeding programs... The alternative low-alkaloid genes generated may provide a new avenue of crop improvement in NLL if they are shown to be associated with higher yield potential than the current iucundus low-alkaloid is thought to be... Material evaluated during the project showed the success of using single-seed near infra-red (NIR) to screen a seed population for individual seeds with varying seed-quality attributes...
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Studies within the project have shown that some of the newly identified slow rusting genes have pleiotropic effects on multiple diseases... In the first phase of this project, this partnership led to the cloning of the first adult plant resistance gene, Lr34/Yr18/Pm38 and the development of a gene-based molecular marker that is routinely being used by many breeding programs worldwide... In 2012, Australian wheat, durum and triticale varieties were also evaluated for stripe rust, as well as for leaf rust in Mexico with prevalent races that constitute an important threat to wheat production ...
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Although biochar addition to soil did decrease inorganic N leaching, soil N mineralisation either decreased or did not change... The application of pyrolysed organic matter or biochar to soil can remediate decreased SOM and sequester C. The application of biochar to soil has also been shown to improve soil fertility and enhance yields of crops such as maize, wheat and peanuts... As biochar addition to soil can increase microbial community size and activity, previous research has hypothesised that this mechanism may be responsible for enhanced N mineralisation rates and contributes to the d...
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The program now has significantly enhanced technical capability and a new project using a commercial partner to deliver this capability nationally has commenced... WhopperCropper has sufficient capability to impact upon risk management decisions of farmers... WhopperCropper has been used to quantify and physically demonstrate (i.e. graph) the effects of inputs, which has added capability to the experience and 'gut feel' of advisers...
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The project was designed to increase understanding about adoption of lucerne and develop an extension framework to improve adoption... In WA, lucerne will not be widely adopted - as the relative advantage is not sufficiently high enough for most growers to change their current system... Previous projects indicated that lucerne was a well established perennial throughout NSW mainly for production reasons...
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The project has demonstrated that summer fallow management can play an important role in regulating soil moisture storage, either to reduce the risk of deep drainage, or to benefit the crop... The lysimeter experiments showed that a 4 t/ha residue cover past sowing (early and mid June) could reduce evaporation losses by approximately 10 mm in 2005 (see Fig. A2) and 15 mm in 2006... To minimise the risk of deep drainage, residue retention should be avoided as much as possible and residue loads reduced to 1 t/ha or less, unless required for other purposes (e.g. erosion control)...
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Field research compared new phosphate solubilising fungal products over a range of fertiliser rates in legumes, cereals, sorghum and oilseed crops, new formulations of rhizobium inoculants in grain legume crops and potential bio-control products to control soil borne disease in cereals... The field research trials have screened the best active microbes, assessed combinations of active microbes, formulations for application (liquid, powder, granule, peat), delivery systems (seed or in-furrow delivery) and application rates... Further field and laboratory research is being undertaken to prog...
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Queensland has seen rapid adoption of conservation farming practices over the past 20 years, particularly on the Darling Downs where the bulk of the State's grain is produced... At the conclusion of the project, we aim to produce cost-effective, sustainable farm management guidelines that will enable Queensland grain producers to reduce crop and associated yield losses caused by mice... RESULTS Preliminary statistical analysis indicates that while the continued drought conditions have reduced mice populations to very low levels, there are still many more mice trapped on the untreated prope...
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