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GRDC Factsheets

GRDC Factsheets. These are produced from GRDC funded research.

Registered items

Catalogue: 
D r A N O e L A m m e : O T O H P Residues: Late herbicide applications to crops increase the risk of detectable herbicide residues in harvested grain, potentially leading to breaches of maximum residue limits (mrLs)... Paraquat is not registered for: in-crop spray topping; pre-harvest crop desiccation; under-the-cutter-bar spraying during swathing or windrowing activities; pre-harvest weed control; spraying over the top of swaths or windrows.. The MRL for a product in a certain crop is calculated on the registered maximum label application rate, so it is important that spray equipment is ...
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Nitrogen fixation by crop legumes reduces the need for fertiliser nitrogen (N) and emissions of nitrous oxide... Benefits from legumes can be maximised by using high-yielding legume varieties that are not constrained by poor management, insects, disease, weeds or nutrient deficiencies... amounts of n Nitrogen fixation by crop legumes has now been estimated in many studies...
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The emerging disease issue is being caused by several previously unrecorded species of Phomopsis that are highly virulent on sunflower... Place in a paper bag or newspaper and send via post or courier to Sue Thompson, Plant Pathology Unit, dEEdI, 203 Tor Street (PO Box 102), Toowoomba, QLd 4350... There are no Australian sunflower hybrids with known tolerance or resistance to these Phomopsis species cultural controls are the only option...
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grain residues in storages or older grain stocks held over from last season provide ideal breeding sites... The aim is to apply the slurry to give complete coverage but ensure it doesn't run off the walls of storages and equipment... Apply the slurry in the same order as the dust - start at the top of the silo or storage and work down the walls applying an even coat, avoiding runs from spraying too close or too much slurry...
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Other measurements that aid the interpretation of soil nutrient tests include soil pH, percentage of gravel in the soil, soil carbon/organic matter content, P sorption capacity [currently measured as Phosphorus Buffering index (PBi)], electrical conductivity, chloride and exchangeable cations (CeC) including aluminium... for canola the critical value measured in the 0 to 10cm soil layer is 44mg K/kg for all soils to achieve 90 per cent of maximum yield... The critical wheat soil S test value measured in the 0 to 30 cm soil layer is 4.6mg S/kg for all soils to achieve 90 per_cent of maximum...
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Farmlabour FACTSHEET southern region fiLLing THe fArm LABOur gAP.. The benefits of employing part-time labour include: number of work hours and times that suit both parties; regularity and consistency in having the same staff member all year round; training or skills developed are applied continually throughout the year; and development of a good working relationship, in which both parties gain a better understanding of orking together... The benefits of employing casual labour include: help completing specific jobs that require additional resources or a different skill set; having appropr...
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the GRDc's investment process can be described in six steps: 1 Identify RD&e priorities; 2 Investment Planning Week; 3 Release of the external Investment Plan; 4 Review and Priorities Meeting; 5 contract projects; and 6 assess reports... Figure 1 Following external consultation, the GRDC uses a matrix approach between Program Teams and Regional Panels to discuss and prioritise investments.. Several independent impact assessment studies are commissioned each year to examine economic, environmental, and social benefits of GRDC's investment in projects...
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Soil type is useful in deducing the risk of micronutrient deficiencies... introduction A recent study undertaken by the International Crop demand and uptake Micronutrients are essential for healthy Plant Nutrition Institute (IPNI) on behalf of the Different crop species have different plant growth... Oats, wheat, barley (canola tolerant) SOurCe: rOB nOrTOn, iPni y e n t i w w e h t t a M : o t o h p Copper is a key element of chlorophyll and plays a central role in photosynthesis, and deficiencies are often associated with high organic matter soils...
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Use the coarsest spray quality that will provide efficacy... spray during favourable weather conditions Wind speed is critical Air movement is needed to ensure that mixing occurs in the air... A Canadian study, conducted by Dr Thomas Wolf of the Saskatoon research Centre, showed that high travel speeds combined with higher wind speeds (20km/h) almost doubled the amount of chemical left in the air when compared to low travel speeds (8km/h)...
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Know the correct mixing order for every tank mix you use... A guide to the suitability of water for spray applications can be quickly obtained using the following procedure... Sometimes foaming can be reduced by having more water in the tank before introducing products or by using anti-foaming agents...
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