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soil test

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Catalogue: GRDC Media
Soil testing with rake and boot.. Research is updating 'critical soil test values' which is improving interpretation of soil test results and helping Western Australian grain growers make better fertiliser decisions... Findings from crop nutrition research and guidelines to help growers conduct soil testing and apply fertiliser effectively are outlined in a Soil Testing for Crop Nutrition Fact Sheet and More Profit from Crop Nutrition Ground Cover Supplement...
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Catalogue: GRDC Media
Soil testing with rake and boot.. Research is updating 'critical soil test values' which is improving interpretation of soil test results and helping Western Australian grain growers make better fertiliser decisions... Findings from crop nutrition research and guidelines to help growers conduct soil testing and apply fertiliser effectively are outlined in a Soil Testing for Crop Nutrition Fact Sheet and More Profit from Crop Nutrition Ground Cover Supplement...
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Catalogue: GRDC Updates (West)
Blackleg and its management has become an important issue for canola in the coming seasons... As most of the canola cultivars, irrespective of the level of their adult plant resistance, are susceptible to infection by the fungus at the seedling stage (may be termed as 'seedling susceptibility window') and consequent canker formation the timing of ascospore release in relation to the onset of adult plant resistance provides information on the risk of blackleg... The risk of blackleg appears to be both location and season specific...
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Catalogue: NVT Online Papers
Early work on canola focused on weed management strategies including the breeding of herbicide tolerant canola varieties such as triazine tolerant (TT) varieties which now account for an estimated 90% of canola grown in WA... Research is still being conducted to determine the effect of these viruses on the yield of canola in WA. European work has found seed yield losses of 10-15% associated with this virus disease in canola... The amount of air passed through the grain is measured in litres per second per tonne and varies depending on the particular aeration strategy...
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Catalogue: GRDC Media
Consultant's Corner: Break crop research digs beneath the surface - The commercial view.. Caption: Canola plants showing symptoms of manganese toxicity where the subsurface pH is below 4.8... Caption: Assessing and comparing the subsurface pH of healthy and unhealthy canola plants...
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Catalogue: Ground Cover
Clay and spading helps rebuild non-wetting soils.. On 19 July 2010, after about 78mm of rain, the nil treatment (Figure 1) had a lower plant density and went on to yield 0.66t/ha, while the 260t/ha of clay incorporated by spading plot (Figure 2) had a high plant density and went on to yield 1.41t/ha... In 2010 Trevor had electromagnetic surveys (EM38), gamma-ray spectrometry (radiometrics) and deep soil analysis done for measuring and mapping the depth to clay and he used these maps in 2011 to strictly apply clay only where it was needed...
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Catalogue: GRDC Updates (North)
We have applied late nitrogen over the past two seasons to a portion of our wheat crop to successfully grow and deliver Prime Hard (PH) wheat... My plan is for this paddock to receive top-dress nitrogen in late September or early October for PH 13% to 14% protein, only, if the profile is full and budgets indicate it is worth the risk... Goulburn has hard seed levels of 30% measured at the end of April...
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Catalogue: GRDC Updates (South)
We have applied late nitrogen over the past two seasons to a portion of our wheat crop to successfully grow and deliver Prime Hard (PH) wheat... My plan is for this paddock to receive top-dress nitrogen in late September or early October for PH 13% to 14% protein, only, if the profile is full and budgets indicate it is worth the risk... Goulburn has hard seed levels of 30% measured at the end of April...
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Catalogue: GRDC Publications
" Goondiwindi GRDC Grains Research Update Day 1 - Tuesday 4 th March Time Topic Speaker (s) 10:00 AM James Clark (Chair Northern Welcome Panel GRDC) 10:10 AM General plenary (Supported by North West Local Land Services) 10:10 AM 10:40 AM.. Overall, both models are acceptable for modelling soil evaporation over a range of soils and seasons provided accurate soil physical properties and starting water states are known... Overall, populations increased five times compared to before planting the summer crops, but remained below 250/kg soil (Figure 4)...
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Catalogue: GRDC Updates (South)
The capacity of the plant to take up potassium is not directly related to potassium in solution... Spraying is best done when there is some wind, and when the operator can be sure that wind direction has stabilised... Driftability of amine formulations The 2,4- D products Surpass and Amicide 625 which were used in the trial are considered to be nonvolatile any drift that is associated with these products will be droplet drift not vapour drift...
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