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Catalogue: GRDC Updates (West)
Whilst there is anecdotal evidence to suggest that dry seeding has been widely adopted in Western Australia, especially in the lower rainfall agronomic zones, the extent and management of dry seeding are not well documented, particularly for wheat crops... The aims of the paper are to determine the extent of dry seeding across the agro-ecological zones of the Western Australian Wheatbelt, to uncover the trends of adoption by soil types, rainfall and crop species and to define the management practices and gaps in knowledge around the risks of dry seeding crops in Western Australia... Central Wheatbelt "We prefer to sow canola dry as I have had good results doing this, less staggered germination, better early vigour etc. we only dry sow wheat into clean paddocks where I don't need weed control"..
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Catalogue: GRDC Updates (West)
Evaluation of the environmental and economic impact of Roundup Ready canola in the Western Australian crop production system James Fisher and D sir e Futures, York, Western Australia, james@desireefutures.net.au Peter Tozer, PRT Consulting, Armidale NSW, prt_consulting@live.com.au.. Overall, the analysis suggests that Roundup Ready canola could be as profitable or more profitable than triazine tolerant canola with a reduced environmental impact and slightly reduced fuel use... Crop Updates is a partnership between the Department of Agriculture and Food, Western Australia and the Grains Research & Development Corporation 176..
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Catalogue: GRDC Media
Project leader Mark Seymour, of DAFWA, said last year's canola plant density trials showed that canola establishment can fluctuate very widely - from 30 to 80 per cent - with changes in soil moisture, soil temperature and variety... Mark said a density of 20-30 plants/m 2 was adequate for most varieties at most trial sites to achieve good establishment, ensure robust weed competition and produce yields of about 0.8-2 tonnes/ha... Mark said the trials showed optimal plant density for canola in low and medium rainfall zones tended to vary with variety and herbicide tolerance production system...
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Catalogue: GRDC Media
Project leader Mark Seymour, of DAFWA, said last year's canola plant density trials showed that canola establishment can fluctuate very widely - from 30 to 80 per cent - with changes in soil moisture, soil temperature and variety... Mark said a density of 20-30 plants/m 2 was adequate for most varieties at most trial sites to achieve good establishment, ensure robust weed competition and produce yields of about 0.8-2 tonnes/ha... Mark said the trials showed optimal plant density for canola in low and medium rainfall zones tended to vary with variety and herbicide tolerance production system...
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Catalogue: GRDC Updates
Whilst there is anecdotal evidence to suggest that dry seeding has been widely adopted in Western Australia, especially in the lower rainfall agronomic zones, the extent and management of dry seeding are not well documented, particularly for wheat crops... The aims of the paper are to determine the extent of dry seeding across the agro-ecological zones of the Western Australian Wheatbelt, to uncover the trends of adoption by soil types, rainfall and crop species and to define the management practices and gaps in knowledge around the risks of dry seeding crops in Western Australia... In the paper results for dry sowing adoption and farmers perception of risk are presented...
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Catalogue: Ground Cover
Early sowing the symptom of a new climate.. Seasonal rainfall zones have shifted across Australia since 2000.. Dr Stephens said the new analysis revealed striking changes to the Australian climate since 2000: "There has been a general increase in summer rainfall across Australia and a corresponding decrease in winter rainfall," he said...
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Catalogue: GRDC Updates (West)
The collation of the information into a recently developed database has provided a summary of the 2005 and 2006 reports... Higher rate observed at site 1 is due to the soil having a higher soil carbon levels (1.2%) compare to site 2 (0.8%) and lower amounts of net immobilisation... When all stubble fractions are incorporated into the amount soil inorganic nitrogen immobilised can be up to 45 kg N/ha...
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Catalogue: GRDC Updates (West)
Average yield loss from YS-SNB disease complex in wheat over thirty years of DAFWA's field trials in WA was 11.5% equating to 302 kg/ha or $75 /ha... The higher rainfall zone suffers greater yield losses from YS-SNB disease complex than medium and low rainfall zones... Average yield loss from YS-SNB disease complex on wheat in Western Australia was calculated as 302 kg/ha (CI = 28 kg/ha), or about 11.5% (CI = 1.1) (Figure 2)...
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Catalogue: GRDC Updates
For the purpose of this report, yield response to single fungicide applications includes data for applications of any product or rate at any growth stage unless otherwise stated... Average yield loss from YS-SNB disease complex on wheat in Western Australia was calculated as 302 kg/ha (CI = 28 kg/ha), or about 11.5% (CI = 1.1) (Figure 2)... To better understand relative importance of each variable assessed, data from two years (1993 and 2011) which had trials from a range of sites with a significant range of yield responses were analysed by multiple regression...
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