GRDC Research Updates Perth
Presented at:
This page contains update papers presented at the .
Browse all update papers below.
Use the media tab to view presentation materials from the event such as power points, images or videos and other media.
Presented at
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Understanding the seed bank longevity (persistence) of emerging weed species in the absence of seed production in Western Australian cropping systems....
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Two populations of willow-leaved lettuce collected from an irrigated horticultural property in the Gascoyne Region of Western Australia (WA) have tested resistant to glyphosate. Growers must adopt integrated weed management (IWM), including alternative non-selective herbicides, to minimise the risk of glyphosate resistance development in weeds....
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Two populations of sowthistle collected from the roadside of the Western Australian wheatbelt were found resistant to glyphosate. A single application of herbicide or tank mix of herbicides may not kill sowthistle plants but significantly reduces cypsela (seed head) production. Double knockdowns should be employed as part of an integrated weed mana...
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This three year series of trials aimed to quantify losses in barley yield and quality from spot type net blotch (STNB) across a range of variety resistances in the Western Australian (WA) environment. These trials are a subset of a national series and varieties were selected based on their resistance profile....
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Under high leaf rust disease pressure, such as in Albany and Esperance port zones, barley varieties which possess adult plant resistance (APR) genes (Rph20 and Rph24) are likely to benefit from foliar fungicide applications through reduction in disease severity and positive yield responses. In high rainfall, long season environments; seed dressing,...
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There can be residual carryover benefits of banded soil wetting agent into the following season on repellent forest gravel soils, but the effect may not be consistent enough to rely on. In responsive situations it was generally better to have a ‘fresh’ application of soil wetter each season. Using banded wetting agents when seeding repellent forest...
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At three widely separated sites the distribution of snails was sufficiently patchy to allow targeted controls. Mobile phone app technology might be able to be used in the future to map snail densities in a paddock. Applying this technique using snail baits as an example shows that costs could be reduced or more effective controls could be achieved....
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This paper outlines three experiments conducted at Nangeenan (alkaline, saline, boron toxic subsoils: Morrel soils), Ongerup (hard sodic subsoils: Moort soils) and Esperance (compact and mildly acidic subsoils: Sandplain). The treatments included deep placement of soil specific amendments (lime, gypsum, elemental sulphur, acid sand or composted chi...
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40% lower germination was measured from seed off plants exposed to wetting and drying at maturity. Lupin grain being kept for seed should be harvested as soon as it is ripe to minimise the chance of rain on mature plants....
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Yield was highest from earlier sown plants, mid-May sown plants yielded only 18% of those sown in mid-April. This occurred despite warm autumn conditions which caused higher pod abortion on the main stems of mid-April sown plants. Irrigation in spring reduced pod abortion by 15%; this highlights the advantage in using agronomic methods such as stub...
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