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Protecting WA Crops Issue 30 - May 2023
No full textProtecting WA Crops Issue 30 - May 2023 contents: GRDC Perth Research Updates – Pathology – Part 2 Impact of fungicide product, rotation and timing on Net form net blotch in Planet barley in southern WA Economical management of Spot form net blotch in low rainfall environments Meet crop protection team member – Jason Bradleyhttps://library.dpird.wa.gov.au/fc_pwac/1003/thumbnail.jp
Ecological risk assessment for the Western Australian offshore crustacean resource.
No full textIn December 2022, the Department of Primary Industries and Regional Development (DPIRD) convened an ecological risk assessment (ERA) of the fisheries that access the Offshore Crustacean Resource (Resource).
The Western Australian commercial fisheries that access the Resource are the West Coast Deep Sea Crustacean Managed Fishery, South Coast Crustacean Managed Fishery and West Coast Rock Lobster Managed Fishery. Due to the predominantly offshore distribution of the Resource, there is only minor recreational and customary access of this Resource related to harvesting of southern rock lobster on the south coast.
The ERA considered the potential ecological impacts of harvesting the Resource. The assessment focused on evaluating the impact of the commercial fishing sector on all relevant retained and bycatch species, endangered, threatened and protected (ETP) species, habitats and the broader environment.
A broad range of stakeholders were invited to participate in the ERA workshop, including representatives of the commercial, recreational, customary and aquaculture fishing sectors, State and Commonwealth Government agencies, the conservation sector, universities and DPIRD staff including fisheries management, research, compliance and biosecurity personnel.
Risk scores were determined based on available scientific information and expert knowledge. The assessment conforms to the AS/NZS ISO 31000 risk management standard, and to the methodology adopted by DPIRD which uses a consequence-likelihood analysis for estimating risk.
Forty three ecological components were scored for risk. The majority (34) of components were evaluated as low or negligible risks, which do not require any specific control measures. Four components were evaluated as medium risks, which were assessed as acceptable under the current monitoring and control measures already in place.
There were four high risks and one severe risk, which all related to stocks of the primary target species. These stocks had been formally assessed by DPIRD prior to this ERA and the pre-existing risk scores from those assessments were adopted in this ERA. Management changes have already been implemented that are expected to reduce the risk for each stock to an acceptable level.
It is recommended that all risks be reviewed in five years
West Coast Demersal Gillnet and Demersal Longline Managed Fishery
No full textWest Coast Demersal Gillnet and Demersal Longline Managed Fisheryhttps://library.dpird.wa.gov.au/gis_manf/1038/thumbnail.jp
Datasets on impacts of growing Vetch, lupin, Albus, Field Pea, Lentil, Deshi Chickpea, Kabuli Chickpea, and safflower after Wheat in Medium and Low Rainfall Zones of Western Australia Farming Systems
No full textTrials conducted from 2022 to 2027 under the Western Australian Farming Systems (DAW2204-003RTX) project in the medium and low rainfall zones of Western Australia used a systems approach to evaluate diversified farming practices. Datasets collected included grain and hay production, biomass for green and brown manuring, phenology data, crop rotation data, weed and disease control, grain quality and feed nutrient analysis, soil data, and economics studies of farming practices
Strategic tillage: how does it impact weed management?
No full textSeed burial depth varies widely between soil types, soil conditions and implement setup, even when using the same soil tillage implements at a consistent speed. Therefore, check the depth of working to estimate weed seed burial. A full soil inversion (mouldboard) buries seed to approximately half the working depth. Seed burial by soil mixing (spading or ploughing) or loosening (deep ripping) is highly variable, depending on the soil type. However, there is no consistent evidence that these amelioration techniques stimulate weed emergence (as is observed after an autumn tickle). How well a weed species recovers after burial depends on both burial depth and seed size. A species with a large seed like great brome is more likely to emerge successfully from a greater burial depth than a small seeded species like annual ryegrass
Inoculating Legumes: Practice and Science
No full textAtmospheric nitrogen (N) is fixed by symbiotic root-nodule bacteria (rhizobia) associated with pasture and pulse legumes and has a national value of about 0.76/kg, which equates to $1.00/kg plant-available N in the soil after accounting for N losses. The price of carbon-based fossil fuels used in the production of nitrogenous fertilisers, is expected to increase in the future which will push fertiliser costs higher. Added to that are the environmental costs associated with the production, distribution and application of nitrogenous fertilisers. Therefore, the historical and ongoing interest by Australian farmers in using legumes which fix nitrogen in their farming systems makes good economic and environmental sense and needs to be sustained into the future
Propagation of bananas
No full textTissue culture is the best method for propagating bananas. It ensures they are true to type and free from pests and diseases.
Check with Department of Primary Industries and Regional Development quarantine officer before bringing tissue culture material into Western Australia.
However, planting with bits is cheap and guarantees that new diseases are not introduced
PestFacts WA Issue 02 - April 2023
No full textPestFacts WA Issue 2 - April 2023 contents: Mites and lucerne flea have started hatching European and native earwigs Slugs and snails have started to lay eggshttps://library.dpird.wa.gov.au/fc_pestfactswa/1004/thumbnail.jp
Protecting WA Crops Issue 34 - October 2023
No full textProtecting WA Crops Issue 34 - October 2023 contents: Does electric weed control work on herbicide resistant weeds? Meet Crop Protection team member – Miranda Slavenhttps://library.dpird.wa.gov.au/fc_pwac/1008/thumbnail.jp
Soil Quality: 10 Plant Nutrition
No full textThe Soil Quality ebook series is a resource for farmers, agricultural professionals, and students. Experts from their fields share current knowledge and best practice techniques presented in layers of information, allowing readers to choose the level of detail they require.
Book 10 Plant Nutrition provides a detailed understanding of nutrient management in the south-west agricultural region of Western Australia. This book describes the basic functions of nutrients in plants, capture of nutrients by plants, what influences soil nutrient supply and how this is measured, as well as exploring factors that influence plant response to fertiliser application. A useful, practical guide for farmers wanting to assess and manage crop and pasture nutrition on a range of soil types.https://library.dpird.wa.gov.au/sq_ebooks/1009/thumbnail.jp