Department of Agriculture and Food Western Australia
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Sheep enterprise gross margins and emissions in Western Australia: A spatial and structural analysis
No full textIn this study a spatial and structural analysis of sheep enterprise gross margins and emissions in Western Australia’s agricultural region is conducted. Specifically, self-replacing Merino sheep enterprises are examined in 14 agroecological zones using five years of farm level data (2019-2023). Emissions calculations are based on the Australian Sheep and Beef Greenhouse Accounting Framework. Results reveal significant variability in gross margins and emissions across agroecological zones and across farm performance groupings. During the study period sheep enterprises in the high rainfall and medium rainfall southern zones displayed higher gross margins (106-148 per winter-grazed hectare), although significant temporal variation was evident due to volatility in climatic conditions and commodity prices. Total emissions per annum ranged from 462 kg CO2-e per winter-grazed hectare in low rainfall regions to 1,455 kg CO2-e in high rainfall regions, with the top 25% of farms generating 2,300 kg CO2-e per winter-grazed hectare. Emissions per kilogram of liveweight sold ranged from 5.6-6.6 kg CO2-e per kg of liveweight for meat whilst for wool, emissions were 20.1-23.4 kg CO2- e per kg of greasy wool, decreasing from northern to southern zones. Survey results reveal a greater potential for emissions reduction on farms in the high rainfall region. Each dollar of forgone gross margin on these farms generates more emission reductions than is possible for farms in other rainfall regions. However, the practical concern for all farms is that there is currently no strong commercial penalty or reward for altering emissions from sheep production. The current gross margins for sheep production, especially in the high rainfall region, signal that maintained or greater intensification of sheep production is worthwhile, even though emissions per hectare or emissions per kilogram of sheep or wool may increase
Detection of Phosphite Fungicide in Persea americana Fruits Using Nuclear Magnetic Resonance (NMR) Spectroscopy at 400 and 80 MHz
No full textNuclear magnetic resonance (NMR) spectroscopy is widely adopted for assessing biochemical composition in agriculture. This study evaluated the feasibility of 400 MHz NMR to detect biochemical differences in Hass avocados grown under conventional (N = 101) and regenerative (N = 105) farming practices in Southwestern Australia. Phosphite, associated with Phytophthora root rot management, was a key discriminating feature (area under ROC curve = 0.96), being detected in 90% of conventional avocados (mean: 49 mg/kg) and 6 regenerative samples (mean: 24 mg/kg). To assess translational potential, water extracts of five samples were analyzed using 80 MHz benchtop NMR. Phosphite was detectable below the strictest maximum residue limit (25 mg/kg), demonstrating the potential of NMR as a sustainable and cost-effective solution for monitoring phosphite residues. This proof-of-concept benchtop NMR approach demonstrates analytical feasibility but requires further validation before application in field-based traceability or regulatory contexts, with a potential future relevance to environmental monitoring, sustainable agriculture, and other crop systems
Fremantle, City of - BEN sign map – 1 of 1
No full textBeach Emergency Number (BEN) Signage Installation Map – City of Fremantlehttps://library.dpird.wa.gov.au/gis_bens/1007/thumbnail.jp
UAV imagery for OzBarley project
No full textRaw imagery data was collected as part of the OzBarley project, which aims to investigate the genetic and phenotypic diversity present in barley germplasm. The project focuses on characterizing a wide range of barley accessions to better understand variation in traits relevant to breeding, adaptation, and resilience. This dataset will serve as a foundation for identifying unique genetic resources and informing future breeding strategies
Environmental impact of nitrogen and phosphorus fertilisers in high rainfall pasture areas of Western Australia
No full textThe most commonly used nitrogen and phosphorus fertilisers in the high rainfall (\u3e600mm annual average) south-west of Western Australia can be leached into the groundwater and washed into waterways, resulting in serious environmental and economic damage.
The Department of Primary Industries and Regional Development recommends regular soil testing and consultation with FertCare-accredited advisers to reduce leaching losses and increase profit from added nutrients
Root-knot nematodes in Western Australian horticulture
No full textRoot-knot nematodes (Meloidogyne species, RKN) are unsegmented round worms which are usually invisible to the naked eye, but the galls they produce in infested plant roots are often easy to spot. RKNs are plant-parasitic with a broad host range, which includes vegetables, field crops, tree and vine fruits, ornamentals, pastures and some weed species.
Root-knot nematodes reduce yields of many horticulture crops, including carrot, potato, sweet potato, tomato, capsicum, pumpkin, zucchini, avocado, grapes and lettuce. RKNs favour the sandy soils common throughout the south-west of Western Australia’s (WA’s) horticultural area
WA Insecticide Guide 2026 - Autumn Winter
No full textRegistered chemicals for broadacre crops in Western Australia The insecticides listed in the tables within this guide can be used on any crop appearing on the chemical label, if the rate used does not exceed the highest rate that is registered for use on that crop. There are many products with different trade names that contain the same active ingredient. This list is not exhaustive and does not imply any specific recommendations of brand names. Unless otherwise specified, all insecticides listed are emulsifiable concentrates (EC). Other insecticide formulations are suspension concentrate (SC), wettable powder (WP), capsule suspension (CS), wettable granules (WG), emulsion (EW) dry flowable (DF) and water dispersible granules (WDG). Ultra-low volume (ULV) insecticides are not listed. Read the chemical label before use and check label withholding periods for grazing or hay/silage/fodder production before application.
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The information tabled is a guide only. Whilst every care has been taken in preparation of the information, some errors or omissions may have occurred.
Compiled by Senior Research Scientist Svetlana Micic and Research Scientists Rebecca Severtson and Andrew Phillips from the Department of Primary Industries and Regional Development (DPIRD) and the PestFacts WA service team.https://library.dpird.wa.gov.au/fc_pestfactswa/1052/thumbnail.jp
2025-26 Pest Scarab Species Trial Data
No full textExperimental data on effects of insecticide seed treatments on cockchafer and barley plant health
Anthelmintic efficacy of rosemary oil and its nanoemulsion against the monogenean parasite, Zeuxapta seriolae, in yellowtail kingfish (Seriola lalandi)
No full textThis study evaluated the anthelmintic efficacy of rosemary oil delivered as a nanoemulsion compared with regular rosemary oil against the monogenean parasite Zeuxapta seriolae in yellowtail kingfish (YTK; Seriola lalandi). A 20-day feeding trial tested three dietary treatments: two levels of regular rosemary oil (providing 0.85 and 1.7 g cineole·kg−1 feed) and a rosemary-oil nanoemulsion (providing 0.85 g cineole·kg−1 feed), against a control diet without rosemary oil. Juvenile fish (293 ± 5 g) were pre-exposed to Z. seriolae oncomiracidia before the trial, resulting in an initial mean parasite abundance of 97 ± 4 per fish. At trial completion, plasma cineole concentrations were highest in fish receiving the high-dose regular rosemary oil diet, followed by the nanoemulsion diet, and then the low-dose regular rosemary oil. These plasma levels closely matched treatment efficacy: fish fed the high-dose diet exhibited the lowest mean abundance of Z. seriolae, followed by those receiving the nanoemulsion and low-dose diets. A similar pattern was observed for juvenile parasite recruitment. Across parasite developmental stages, all rosemary-oil treatments significantly reduced the proportion of juvenile Z. seriolae relative to the control. Growth performance and feed intake did not differ among treatments. Plasma biochemistry remained unchanged, and no histopathological alterations were detected in liver or kidney tissues. Overall, these findings demonstrate that dietary rosemary oil effectively transfers cineole into the blood of YTK and reduces Z. seriolae infection and that application of the rosemary oil in a nanoemulsion further increases cineole uptake
Joondalup, City of - North BEN sign map – 1 of 2
No full textBeach Emergency Number (BEN) Signage Installation Map – City of Joondalup (north)https://library.dpird.wa.gov.au/gis_bens/1008/thumbnail.jp