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Catalogue: GRDC Updates
In low rainfall areas or in drier seasons rainfall may be too low or variable to get consistent results from delayed N. Figure 3b shows that the risk associated with a delayed N strategy increases at sites were yields were less than about 2,500 kg/ha: the variation in the response to N applied at stem elongation is high and in many cases there are lower yields from delayed applications compared to N applied at sowing... Experiments over many years have shown that there is no consistent difference in the response to different forms of N fertiliser when compared at the same rate of N and the same time of application... Recent work from Victoria suggest losses of N from volatilisation of up to 1% per day with urea and about half that for UAN and ammonium sulphate (Table 1)...
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Catalogue: GRDC Factsheets
Yield losses in crops affected by bare patches can be over 50% and crops with uneven growth (Figure 1) may lose up to 20%... Figure 1: Above-ground symptoms of crop unevenness (main picture) are seen when Rhizoctonia damages crown roots, even when seminal roots (inset) escape the infection... Inoculum levels increase in cereal crops at all depths...
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Catalogue: GRDC Factsheets
Yield losses in crops affected by bare patches can be over 50% and crops with uneven growth (Figure 1) may lose up to 20%... Figure 1: Above-ground symptoms of crop unevenness (main picture) are seen when Rhizoctonia damages crown roots, even when seminal roots (inset) escape the infection... Inoculum levels increase in cereal crops at all depths...
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Catalogue: GRDC Final Reports
Use of canopy reflectance at flowering from winter and summer cereal crops unaffected by severe water stress indicated likely variation in final grain protein... We suggest that the most cost-effective use of Outputs 1 and 2 require a simple means of assessing crop water stress before the image is captured... Maps of variation in grain protein, when used with yield maps, provide opportunity for cost-effective improvement of N management of cereal crops...
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Catalogue: Ground Cover
Summer rain adds to crop management options for season 2013.. Overall, the wheat yielded 4t/ha on average, which included the ungrazed LongReach Spitfire and EGA Gregory wheats... James hopes to investigate the allocation of contract labour more thoroughly in a bid to see if it can allow the family to capture more fully the benefits of any excess rainfall...
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Catalogue: GRDC Media
Grain growers in New South Wales and Victoria are advised to closely monitor crops for cutworms which have been causing extensive crop damage... Dr McDonald says that in Victoria, large numbers of cutworms have caused extensive damage to canola and cereal crops in the Wimmera district, as well as to a variety of crops in the north central region... Monitoring is crucial, particularly after small patches begin to appear...
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Catalogue: Ground Cover
Header efficiency increases with harvest height.. SFS research and trials manager Paul Breust says harvesting these crops at 15cm to facilitate establishment of the following year's crop has become a common practice in recent years for those wanting to retain stubble... Mr Breust says with header speed adjusted to a 90 per cent engine load, it was not surprising that a crop harvested at 15cm high was 20 per cent slower than harvesting at 30cm high...
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Catalogue: Ground Cover
Header efficiency increases with harvest height.. SFS research and trials manager Paul Breust says harvesting these crops at 15cm to facilitate establishment of the following year's crop has become a common practice in recent years for those wanting to retain stubble... Mr Breust says with header speed adjusted to a 90 per cent engine load, it was not surprising that a crop harvested at 15cm high was 20 per cent slower than harvesting at 30cm high...
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Catalogue: GRDC Media
Give early seeding technique a dry run.. "Studies supported by the Grains Research and Development Corporation (GRDC) have shown that, overall, dry seeding will give you an advantage in well managed conservation farming systems, especially in dry years," he said... Dr Minkey said a new GRDC funded project, involving WANTFA, CSIRO and the Department of Agriculture and Food (DAFWA), was refining guidelines for successful early sowing, including tips on reducing the risks and increasing profits...
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Catalogue: GRDC Media
Grain growers in New South Wales and Victoria are advised to closely monitor crops for cutworms which have been causing extensive crop damage... Dr McDonald says that in Victoria, large numbers of cutworms have caused extensive damage to canola and cereal crops in the Wimmera district, as well as to a variety of crops in the north central region... Monitoring is crucial, particularly after small patches begin to appear...
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