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yield response

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Catalogue: NVT Online Papers
The research has been conducted in WA wheatbelt to determine if new and existing varieties of barley vary in tolerance to commonly used herbicides... The sensitivity of the variety is summarised, using the following symbols based on the yield responses across all trials: not tested or insufficient data.. (z) no significant yield reductions at recommended rates or higher than recommended rates in (z) trials x% (w/z) narrow margin, % yield reductions at higher than recommended rate, but not tested at recommended rate significant event occurring w years out of z years tested...
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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: NVT Online Papers
Preliminary evaluation entries from previous years that have experienced narrow margin % yield reductions at higher than recommended rate are 'Advanced' to these trials for closer evaluation... The sensitivity of the variety compared to unsprayed controls of the same variety is summarised, using the following symbols based on the yield responses across all trials: not tested or only tested at higher than recommended rate (Please check Preliminary Evaluation tables) no significant yield reductions at higher than recommended rates in (Z) trials.. It must be emphasised that crop tolerance and yield responses to herbicides are strongly influenced by seasonal conditions...
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Catalogue: NVT Online Papers
The research has been conducted in WA wheatbelt to determine if new and existing varieties of wheat vary in tolerance to commonly used herbicides... The sensitivity of the variety is summarised, using the following symbols based on the yield responses across all trials: - not tested or insufficient data (z) no significant yield reductions at recommended rates or higher than recommended rates in (z) trials x% (w/z) narrow margin, % yield reductions at higher than recommended rate, but not tested at recommended rate significant event occurring w years out of z years tested... The organisations involved in this research do not endorse the use of herbicides above the registered rate or off label use of herbicides or tank mixes...
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Catalogue: GRDC Media
His trials at Dalwallinu, Merredin and Mullewa in 2012 and 2013 demonstrated that some wheat varieties could establish well when sown to a depth of 70-100mm... But establishment across all sites was reduced by between 17 and 61 per cent with deep sowing, compared to establishment from a sowing depth of 50mm (especially in varieties with short coleoptiles and on loamy soil)... At the North Miling site, establishment was similar for shallow (28mm) and 'normal' (52mm) sowing depths, but deep sowing to a depth of 119mm reduced establishment by between 22 and 45 per cent for a range of wheat varieties...
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Catalogue: GRDC Publications
Identify where the benefits of fluid fertilisers are likely to be significant, in terms of climate, soil type and cropping system... The conclusion is that while there does not appear to be any yield advantage associated with using Flexi-N through the boom, as opposed to urea topdressed prior to sowing, there does appear to be an advantage when it is banded... The freight was approximately $40/tonne, compared to solid fertiliser delivered bulk, which is approximately $20/tonne...
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Catalogue: NVT Online Papers
The sensitivity of the variety is summarised, using the following symbols based on the yield responses across all trials: not tested or insufficient data no significant yield reductions at recommended rates or higher than recommended rates in 2+ trials (narrow margin) significant yield reductions at higher than recommended rate in 1+ trials, but not at recommended rate.. x% yield reduction (warning) significant yield reduction at recommended rate in 1 trial only x-y% yield reductions (warning) significant yield reductions at recommended rate in 2+ trials Always follow label recommendations... It must be emphasised that crop tolerance and yield responses to herbicides are strongly influenced by seasonal conditions...
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Catalogue: GRDC Updates (West)
The initial adoption of Flexi-N was driven by the convenience of storage and handling, improved speed and uniformity of application, and reduced labour requirements when applied with pesticides... Crop Updates is a partnership between the Department of Agriculture, Western Australia and the Grains Research & Development Corporation 37.. The trials suggest that applying fungicides in large droplets at water rates between 60-80 L/ha will be beneficial in a range of seasons in the Mingenew area...
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Catalogue: Ground Cover
While researchers would prefer growers not to grow varieties susceptible to stripe rust, in some areas yield considerations override the rust risk... The research found protection at the flag leaf stage (GS39) provides the greatest yield response and it is the most important leaf to keep diseasefree... "Which option a grower chooses should be based on a strategy which considers varietal choice and rating, seasonal conditions and yield potential, crop rotation, sowing time, fungicide strategy, ability to spray on time and profitability," Mr Hamblin says...
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Catalogue: GRDC Updates
Herbicides are not the answer to herbicide resistance... Sixteen of the growers practiced HWSC in the form of narrow windrow burning in only 12% of years (i.e. Herbicides only group)... In the eighth year of using this practice these growers had zero ryegrass in their focus paddocks and have averaged less than 1.5 ryegrass plants /m 2 ever since...
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