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Cichorium intybus - environmental weed risk assessment 2022
No full textIntroducing new plants to an area may have both positive and negative effects on the environment, economy and community. To minimise the negative environmental impact of introducing new agricultural species, DPIRD conducts a risk assessment procedure based on widely accepted scientific standards. This report assesses Chicory (Cichorium intybus). Chicory is a short-term (two to five years) perennial pasture herb native to Europe, temperate and tropical Asia and North Africa. It has been cultivated as both a summer forage and as a ‘coffee substitute’ for centuries and was introduced into Australia in the 19th century. In experimental trials in northern Western Australia (WA) the annual legumes and herbs had good feed quality but in general, with low forage yields under irrigation, are unlikely to be economically viable. Chicory has also been evaluated at north Broome under irrigation and was persistent through the hotter summer months. It warrants further evaluation, but low biomass production is likely to be a constraint (Moore et al. 2021)
Desmodium intortum - environmental weed risk assessment 2022
No full textIntroducing new plants to an area may have both positive and negative effects on the environment, economy and community. To minimise the negative environmental impact of introducing new agricultural species, DPIRD conducts a risk assessment procedure based on widely accepted scientific standards. This report assesses Greenleaf desmodium (Desmodium intortum). Greenleaf desmodium is a perennial, tropical forage legume adapted to a range of soils (sands, sandy loams, loams to medium clay) with at least moderate fertility, pH 5.0 to 7.0, and a minimum of 800mm rainfall
Echinochloa esculenta - environmental weed risk assessment 2022
No full textIntroducing new plants to an area may have both positive and negative effects on the environment, economy and community. To minimise the negative environmental impact of introducing new agricultural species, DPIRD conducts a risk assessment procedure based on widely accepted scientific standards. This report assesses Japanese millet (Echinochloa esculenta). Japanese millet is a tall, fast-growing annual summer crop that has been domesticated since 2000BC from Japan. It has been cultivated both for human consumption and as a fodder by tribal communities in Asia including in India, Japan, and China (Sood et al. 2015). Japanese (Shirohie) millet is a dual-purpose millet (grain and grazing), although generally grown for only one use to maximise production. It is a temperate grass that tolerates relatively cool soil temperatures for germination (14°C) compared with other species of millet (Hills and Penny 2005). In south-western Australia Japanese millet is a minor fodder crop sown in late winter-spring when seasonal conditions are favourable to provide green feed in late spring and over summer. Japanese millet has not been evaluated under irrigation in northern Western Australia (WA), as the focus has been on pearl millet which is more drought and heat tolerant
Trifolium pratense - environmental weed risk assessment 2022
No full textIntroducing new plants to an area may have both positive and negative effects on the environment, economy and community. To minimise the negative environmental impact of introducing new agricultural species, DPIRD conducts a risk assessment procedure based on widely accepted scientific standards. This report assesses Red clover (Trifolium pratense). Red clover is a temperate, perennial (and sometimes biennial) pasture legume, which is native to Europe and Northern Asia. It is now cultivated for forage in temperate areas worldwide but is sensitive to high temperatures so has a limited role in Australia. It was evaluated in early pasture trials in high rainfall south-western Australia but has had no commercial impact (Moore et al. 2021). Red clover is highly sensitive to high temperatures and is unsuited to northern Western Australia (WA) even under irrigation
Urochloa decumbens - environmental weed risk assessment 2022
No full textIntroducing new plants to an area may have both positive and negative effects on the environment, economy and community. To minimise the negative environmental impact of introducing new agricultural species, DPIRD conducts a risk assessment procedure based on widely accepted scientific standards. This report assesses Signal grass (Urochloa decumbens) Signal grass is a creeping, tropical perennial grass which can form a dense sward
Zea mays - environmental weed risk assessment 2022
No full textIntroducing new plants to an area may have both positive and negative effects on the environment, economy and community. To minimise the negative environmental impact of introducing new agricultural species, DPIRD conducts a risk assessment procedure based on widely accepted scientific standards. This report assesses Maize (Zea mays). Maize (corn) is a tall, annual warm season (C4) grass grown for grain or silage. The first domestication of maize was by the indigenous people of southern Mexico, and it has been cultivated for thousands of years in central and southern America. Maize is a staple food in many parts of the world, with the world production of maize surpassing that of wheat or rice. In addition to being consumed directly by humans, maize is also used for biofuels (corn ethanol), animal feed and other maize products, such as corn starch and corn syrup. Maize is a monoecious plant, as it has separate male and female flowers on the same plant. The tassel or male flower produces pollen, while the ear with silks (female flower) produces ovules that become the seed or kernels
Chapter 13: Research methods for marine and estuarine fishes
No full textWildlife Research in Australia: Practical and Applied Methods is a guide to conducting wildlife research in Australia. It provides advice on working through applications to animal ethics committees, presents general operating procedures for a range of wildlife research methods, and details animal welfare considerations for all Australian taxa. Compiled by over 200 researchers with extensive experience in field-based wildlife research, teaching and animal ethics administration, this comprehensive book supports best practice research methods and helps readers navigate the institutional animal care approval process. Wildlife Research in Australia will help foster a national approach to wildlife research methods, and is an invaluable tool for researchers, teachers, students, animal ethics committee members and organisations participating in wildlife research and other activities with wildlife.https://library.dpird.wa.gov.au/books/1047/thumbnail.jp
Development of monoclonal antibodies against Perkinsus olseni using whole cells
No full textThe genus Perkinsus is comprised of multiple species, notably P. olseni and P. marinus that are on the list of notifiable pathogens of the World Organisation for Animal Health. These protozoans are responsible for mass mortalities in mollusc populations worldwide. Current diagnostic tests for these parasites include incubation in Ray’s fluid thioglycollate medium associated with microscopy, and molecular assays such as PCR or qPCR using species-specific primers, which can be time and labour consuming. To simplify the detection of Perkinsus spp. infections, the current study developed monoclonal antibodies with strong potential for diagnostic use in immunoassays. Mice were immunised with a mix of P. olseni SA-00978–12 T isolate cell types, and multiple promising antibodies were produced through different immunoassays. The immunoglobulins developed seem to be specific to P. olseni and recognise trophozoite and hypnospore cell types. The study also highlighted the difficulty of developing antibodies against Perkinsus spp. and their different cell types and geographical isolates
PestFacts WA Issue 13 - August 2022
No full textPestFacts WA Issue 13 - August 2022 contents: Identifying caterpillars in cereal crops Diamondback moth update Native budworm Wheat powdery mildew fungicide resistance testinghttps://library.dpird.wa.gov.au/fc_pestfactswa/1043/thumbnail.jp
BEN Signage Installation Map – Shire of Murray
No full textBEN Signage Installation Map – Shire of Murrayhttps://library.dpird.wa.gov.au/gis_bens/1048/thumbnail.jp