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Catalogue: Ground Cover
University of Western Australia researchers are investigating approaches for decreasing greenhouse gas emissions from cropping systems By Louise Barton Key points.. Although incorporating grain-legumes, such as lupins, into cereal rotations is known to decrease the amount of synthetic nitrogen applied to the following cereal crop, it is not known if grain-legume production further enhances soil N2O emissions (and negating the benefit of lower CO2 emissions from urea hydrolysis)... Researchers are measuring soil N2O emissions from lupin-wheat rotations using soil chambers...
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Catalogue: GRDC Updates (North)
Precision row placement is likely to have its greatest impact on reducing CR and CRR levels in a no-till farming system with the adoption of GPS guided controlled traffic likely to further benefit this approach... Its main impact on crop productivity has been shown to occur through the disruption of the plants ability to use water efficiently to produce grain (Figure 6)... Plant early in areas of low frost risk, such as higher slopes, and reduce the risk of frost damage by planting more than one variety and by varying planting times...
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Catalogue: GRDC Updates (South)
Precision row placement is likely to have its greatest impact on reducing CR and CRR levels in a no-till farming system with the adoption of GPS guided controlled traffic likely to further benefit this approach... Its main impact on crop productivity has been shown to occur through the disruption of the plants ability to use water efficiently to produce grain (Figure 6)... Plant early in areas of low frost risk, such as higher slopes, and reduce the risk of frost damage by planting more than one variety and by varying planting times...
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Catalogue: GRDC Updates (West)
Mention of a trade name or company in this publication does not imply endorsement of any product or company by the Department of Agriculture... I was educated by a group of farmers at Varley in 1982, to the importance of Crop Updates is a partnership between the Department of Agriculture, Western Australia and the Grains Research & Development Corporation 22.. Advisers and consultants should highlight the management options available to their clients, do sensitivity analyses which in effect, tell the client 'what happens to production, quality and profitability, if he chooses a certain management option ' and show how that changes with input levels, season, soil type, prices going up/down, etc...
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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 Media
Soil suppression leads to nematode egression.. DAF Senior Soil Microbiologist at the Leslie Research Facility in Toowoomba, Dr Nikki Seymour said in glasshouse assays, P. thornei increased only 2-5 times in unheated soil compared with 17 times when soil was heated prior to planting to eliminate the general soil biological community... The impact of farm practices on the suppressiveness of soils to RLNs was studied as part of the project with results showing that factors such as pastures in rotation had a limited impact on soil suppression...
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Catalogue: GRDC Final Reports
Field measurements and lifecycle analysis (LCA) in this project examined if CO 2 emissions from urea could be reduced by substituting urea with grain legume-fixed N and if soil N 2 O emissions could be reduced by raising soil pH (through liming)... The extent to which incorporating grain legumes in cropping rotations would reduce emissions depends on the amount of urea that was saved by substituting grain legume-fixed N for synthetic N fertiliser... The first aim of this research was to measure N 2 O emissions in the field for two years and incorporate the findings into a lifecycle analysis (LCA) to determine if incorporating a grain legume (lupins) into a cropping rotation would lower on-farm and total GHG emissions from wheat production...
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Catalogue: GRDC Media
DAF Senior Soil Microbiologist at the Leslie Research Facility in Toowoomba, Dr Nikki Seymour said in glasshouse assays, P. thornei increased only 2-5 times in unheated soil compared with 17 times when soil was heated prior to planting to eliminate the general soil biological community... The impact of farm practices on the suppressiveness of soils to RLNs was studied as part of the project with results showing that factors such as pastures in rotation had a limited impact on soil suppression... "Research in the project has identified specific antagonists of the RLN - including some for the first time - in our northern grain growing soils more targeted research is required on how to measure and enhance of these organisms in our soil."..
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Catalogue: GRDC Updates (North)
(QDPI & F) Graeme Schwenke Nutrient demands in high yield crops (NSW DPI) 12:42 PM Lunch 1:42 PM Concurrent session 1 (see next page for timetable) 3:12 PM Afternoon tea 3:42 PM Yield and quality losses due to crown rot in Steve barley and wheat... Overall, the higher P rate also led to increased dry matter at the plant cut stage (mid-late tillering) and at the 3 times of NDVI measurement... Overall, mustard and juncea canola have many advantages over canola, and would be better suited than canola to the drier western parts of northern NSW...
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Catalogue: GRDC Updates (South)
(QDPI & F) Graeme Schwenke Nutrient demands in high yield crops (NSW DPI) 12:42 PM Lunch 1:42 PM Concurrent session 1 (see next page for timetable) 3:12 PM Afternoon tea 3:42 PM Yield and quality losses due to crown rot in Steve barley and wheat... Overall, the higher P rate also led to increased dry matter at the plant cut stage (mid-late tillering) and at the 3 times of NDVI measurement... Overall, mustard and juncea canola have many advantages over canola, and would be better suited than canola to the drier western parts of northern NSW...
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