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Catalogue: GRDC Media
Three sets of plant samples of the same variety, showing Charcoal Rot (reddish-purple-black stems), Water Stress (pale, white stems) and Full Water (healthy green stems)... Grains Research and Development Corporation (GRDC) supported research suggests that black layer (abscission layer) formation in the field is the best tool to safely schedule spray-out timing as it can help growers determine their risk approach and modify it as needed on a paddock and variety basis... When spraying, Mr McIntosh said growers needed to ensure that application was carried out in the prime time of day, usually early morning when stomates are open; ensure water quality was good, water volume adequate and adhere to seven days withholding period...
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Catalogue: GRDC Media
Three sets of plant samples of the same variety, showing Charcoal Rot (reddish-purple-black stems), Water Stress (pale, white stems) and Full Water (healthy green stems)... Grains Research and Development Corporation (GRDC) supported research suggests that black layer (abscission layer) formation in the field is the best tool to safely schedule spray-out timing as it can help growers determine their risk approach and modify it as needed on a paddock and variety basis... When spraying, Mr McIntosh said growers needed to ensure that application was carried out in the prime time of day, usually early morning when stomates are open; ensure water quality was good, water volume adequate and adhere to seven days withholding period...
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Catalogue: Ground Cover
DAFWA researcher Sarah Collins is working to characterise differences between crop varieties in terms of their resistance and tolerance to root lesion nematode species in Western Australian conditions... Growers and agronomists are being urged to watch for symptoms of root lesion nematodes (RLN) this winter and spring and use in-season testing services if their presence is suspected... Diagnosis will also help the Department of Agriculture and Food, Western Australia (DAFWA) characterise nematode distribution and gather resistance information for crops and varieties grown in WA...
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Catalogue: Ground Cover
Researchers have detected a new leaf rust pathotype on samples of the Naparoo wheat variety collected in northern New South Wales in early August... As a consequence of the discovery, Professor Park has urged grain growers to be vigilant in checking their crops for leaf rust, and submit plant samples they suspect are infected with the disease for testing... He says the new pathotype found near Gragin and Graman, east of Moree, is a mutation of an existing pathotype that has added virulence for the leaf rust resistance gene, Lr24...
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Catalogue: Ground Cover
Researchers have detected a new leaf rust pathotype on samples of the Naparoo wheat variety collected in northern New South Wales in early August... As a consequence of the discovery, Professor Park has urged grain growers to be vigilant in checking their crops for leaf rust, and submit plant samples they suspect are infected with the disease for testing... "It has since become widespread in Victoria, southern and northern NSW, South Australia and Tasmania, providing an indication of the rate the new pathotype could spread its range," he says...
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Catalogue: GRDC Publications
A positive test result confirms the need for alternative tactics or herbicides... Assessing weed population density The most accurate way to estimate the population of a weed in a paddock is to count the number of plants in an area of known size at a number of locations... Estimating potential weed population density Potential weed population density can be estimated in a number of ways, such as: When weeds are setting seed, count the number of seed-heads or pods, and the number of seeds per pod or seed-head, from a given sample area...
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Catalogue: GRDC Updates
A survey of wheat stubble was carried out in 76 paddocks to quantify the extent of crown rot in southern NSW... Following discussion with Dr Andrew Milgate, Pathologist NSW DPI, it was decided that a survey of wheat paddocks should be undertaken in order to quantify the incidence of crown rot... chris@rmsag.com.au www.rmsag.com.au < Keep browsing 0 Responses to Survey of the incidence of crown rot in wheat paddocks in 2012..
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Catalogue: GRDC Updates
Soil factors affecting micronutrient availability... Even though needed in small quantities, Copper (Cu), Manganese (Mn), Iron (Fe), Zinc (Zn), Boron (B) and Molybdenum (Mo) are all essential for plant growth, although the demand is small relative to nitrogen and phosphorus... The discussion aims to review these issues relative to micronutrients...
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