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Catalogue: Broadacre Field Crops DAFF QLD
Photograph showing black streaks on leaf petioles - Symptoms of tobacco streak virus (TSV) on sunflower.. Photograph showing pith discolouration due to rotting - Symptoms of tobacco streak virus (TSV) on sunflower.. Photograph showing deformed growing point, shortened internodes and yellow blotches on leaves - Symptoms of tobacco streak virus (TSV) on sunflower..
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Catalogue: Broadacre Field Crops DAFF QLD
Photograph showing black streaks on leaf petioles - Symptoms of tobacco streak virus (TSV) on sunflower.. Photograph showing pith discolouration due to rotting - Symptoms of tobacco streak virus (TSV) on sunflower.. Photograph showing deformed growing point, shortened internodes and yellow blotches on leaves - Symptoms of tobacco streak virus (TSV) on sunflower..
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Catalogue: GRDC Publications
Growers do not have access to varieties with resistance to the key exotic pests and disease... The project will proceed in two phases... The project is about optimizing pesticide sprayapplications by: identifying spray technologies and spray settings with low risk of spraydrift, applying pesticides in accordance with latest knowledge about pest behaviour in response to pesticides andtherefore minimizes the risk of target pests developing resistance, and by using pesticides with documented efficacyagainst target pests...
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Catalogue: Ground Cover
Image of a doctor in a laboratory "I like varied work... After completing a Bachelor of Science at the University of Melbourne, majoring in medical microbiology, Ms Kehoe moved to Western Australia and took a job as a technical officer in the Department of Agriculture and Food, WA (DAFWA) virology section... Despite her career starting out in medical research, Ms Kehoe says that since completing her PhD, she hopes to stay in virology in agriculture: "We are looking for funding to complete my BYMV research and I'm also hoping to work on next-generation sequencing and on other viruses and to apply molecular tests to fungal pathogen development."..
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Catalogue: GRDC Media
Joop van Leur, NSW Department of Primary Industries (NSW DPI) plant pathologist says the link is as unproven but it is likely canola crops hosted viruses including Beet western yellows virus (BWYV) which then spread to chickpeas... "Canola and turnip weed close to surveyed chickpea paddocks showed high infections of BWYV and Turnip mosaic virus (TuMV) and have likely played an important role in the BWYV epidemic in chickpeas," Mr van Leur said... "It is likely that virus inoculum builds up in canola over winter and spreads to chickpeas in spring where it can cause severe yield losses."..
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Catalogue: Ground Cover
Canola attack spurs resistance campaign.. In Australia, the green peach aphid (GPA) primarily attacks canola by sucking sap from leaves and flower buds... For example, pirimicarb is not recommended for GPA control in canola crops in Western Australia, Queensland and South Australia due to the widespread levels of resistance to this chemical in these states...
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Catalogue: GRDC Final Reports
A reliable, accurate and sensitive RT-PCR test for detecting Wheat streak mosaic virus (WSMV) in bulk samples of wheat seed was successfully developed, validated in blind studies and made available to the agricultural industry through AGWEST Plant laboratories for use in testing seed stocks... The three main ways to combat WSMV are to 1) destroy the green bridge before sowing to prevent transmission of the virus by the WCM, 2) use wheat seed stocks that have either none or only low levels of the virus, and 3) to sow crops late when temperature conditions are non-conducive for WCM... In an early seed transmission experiment, WSMV was detected by RT-PCR in seedlings nine days after sowing and the number of positive seedlings increased considerably over the following six weeks until almost all batches tested positive...
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Catalogue: GRDC Publications
GRDC Grains Research Update Coonabarabran, February 2014 most sites achieved those returns within 2 crop seasons after deep P application may at least partly reflect the string of wetter seasonal conditions in recent years, although the results from Jandowae, Capella and Gindie all included dry seasons in at least one of the crops followed... Overall, the performance of the barley grain only varieties showed they are capable of producing around 6 t/ha of dry matter and still yielding between 2.7 and 3.4 t/ha of grain... Overall, the most prevalent virus was BWYV and in some locations more than 90% of symptomatic plants were infected with BWYV (Table 1)...
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Catalogue: GRDC Publications
Classifying soil types and measuring plant available water capacity (PAWC); use of fast processes such as EM38; identification of subsoil constraints; crop ability to access deeper soil water... Overall, the most prevalent virus was BWYV and in some locations more than 90% of symptomatic plants were infected with BWYV (Table 1)... GRDC Grains Research Update Nyngan, February 2014 used a PCR forBeet western yellows virus (BWYV),Bean leaf roll virus (BLRV), Phasey bean virus (PhBV) andSoybean dwarf virus (SbDV) to investigate host range of the virus species from a range of locations (Table 2)...
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Catalogue: GRDC Publications
" GRDC Grains Research Update Coonabarabran, February 2014 Canola concurrent session Canola diseases - threats and management Kurt Lindbeck 1, Stephen Marcroft 2and Joop van Leur 3 1 NSW - Department of Primary Industries, Wagga Wagga Agricultural Institute, Pine Gully Road, Wagga Wagga, NSW 2650; 2Marcroft Grains Pathology P/L, Grains Innovation Park, Horsham, Vic... Overall, the most prevalent virus was BWYV and in some locations more than 90% of symptomatic plants were infected with BWYV (Table 1)... GRDC Grains Research Update Coonabarabran, February 2014 van Leur J, Aftab M, Sharman M, Lindbeck K (2014) Proceedings 2014 GRDC Grains Research Update, Coonabarabran...
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