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Catalogue: GRDC Final Reports
Crown rot caused by Fusarium pseudograminearum affects all cereals, but durum crops are particularly susceptible... Closed canopy break crops and fallow are most effective at reducing crown rot... Expertise and results from DAS00032 are being used to assist in developing a pilot spreadsheet...
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Catalogue: GRDC Factsheets
Three top tips to stop crown rot: rotate crops, observe plants for browning at the base of tillers and test stubble and soil... Reducing the risk before planting Reducing inoculum levels is vital to managing crown rot... In the short term these practices can increase infection rates in the next Figure 6: Crown rot distribution cereal crop, as broken up in infected cereal stubble...
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Catalogue: GRDC Factsheets
Three top tips to stop crown rot: rotate crops, observe plants for browning at the base of tillers and test stubble and soil... Reducing the risk before planting Reducing inoculum is vital to managing crown rot... Unfortunately cultivation spreads infected residues, which may increase plant infection rates counteracting any benefits from increased residue breakdown...
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Catalogue: GRDC Factsheets
Assess crown rot risk in paddocks by checking crops for browning of the stem base or by taking soil and stubble samples for analysis... Key messages for crown rot in cereals keeping crown rot inoculum at low levels is by far the most effective way to reduce yield loss from this disease... About the crown rot disease: T his fungal disease is hosted by all winter cereals and many grassy weeds; C rown rot survives for many years in infected plant residues and infection can occur when plants come in close contact with those residues; H igh cereal intensity and inclusion of durum wheat in cropping programs are factors which increase crown rot levels; M ajor yield losses occur when disease levels are high and there is moisture stress during grain fill...
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Catalogue: GRDC Factsheets
Assess crown rot risk in paddocks by checking crops for browning of the stem base or by taking soil and stubble samples for analysis... Key messages for crown rot in cereals keeping crown rot inoculum at low levels is by far the most effective way to reduce yield loss from this disease... About the crown rot disease: T his fungal disease is hosted by all winter cereals and many grassy weeds; C rown rot survives for many years in infected plant residues and infection can occur when plants come in close contact with those residues; H igh cereal intensity and inclusion of durum wheat in cropping programs are factors which increase crown rot levels; M ajor yield losses occur when disease levels are high and there is moisture stress during grain fill...
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Catalogue: GRDC Factsheets
Assess crown rot risk in paddocks by checking crops for browning of the stem base or by taking soil and stubble samples for analysis... Key messages for crown rot in cereals keeping crown rot inoculum at low levels is by far the most effective way to reduce yield loss from this disease... About the crown rot disease: T his fungal disease is hosted by all winter cereals and many grassy weeds; C rown rot survives for many years in infected plant residues and infection can occur when plants come in close contact with those residues; H igh cereal intensity and inclusion of durum wheat in cropping programs are factors which increase crown rot levels; M ajor yield losses occur when disease levels are high and there is moisture stress during grain fill...
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Catalogue: Ground Cover
Disease carryover from 2014 for crown rot, rhizoctonia bare patch, yellow spot (also known as tan spot), net-type net blotch and take-all (along with root lesion nematodes) is likely to be high in many wheatbelt areas.. She says management options that can help to minimise yield losses resulting from crown rot in cereals include: choosing paddocks with low disease inoculum levels; sowing between stubble rows where there is likely to be less disease pressure; selecting a cereal type that is likely to have lower yield losses, such as barley, and avoiding highly susceptible cereal types, such as durum wheat; delaying nitrogen applications; and potentially using a seed dressing in moderate-risk paddocks... GRDC's eXtensionAUS: www.extensionaus.com.au/crown-rot-in-winter-cereals ; (western) www.extensionaus.com.au/crown-rot-cereals-western 2015 Crop Updates papers on crown rot and rhizoctonia bare patch: www.giwa.org.au/2015-crop-updates DAFWA 'Crop Diseases: forecast and management': www.agric.wa.gov.au/barley/crop-diseases-forecasts-and-management DAFWA AGWEST Plant Laboratories: www.agric.wa.gov.au/plant-biosecurity/agwest-plant-laboratories..
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Catalogue: Ground Cover
Planning needed to limit disease carryover.. Disease carryover from 2014 for crown rot, rhizoctonia bare patch, yellow spot (also known as tan spot), net-type net blotch and take-all (along with root lesion nematodes) is likely to be high in many wheatbelt areas.. She says management options that can help to minimise yield losses resulting from crown rot in cereals include: choosing paddocks with low disease inoculum levels; sowing between stubble rows where there is likely to be less disease pressure; selecting a cereal type that is likely to have lower yield losses, such as barley, and avoiding highly susceptible cereal types, such as durum wheat; delaying nitrogen applications; and potentially using a seed dressing in moderate-risk paddocks...
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Catalogue: GRDC Final Reports
Grain yields were increased only slightly with variable rate (VR) application using the N-Sensor but showed potential for mapping weeds... To increase the uptake of PA for better economic returns, there is a need to increase support for growers, advisers and the PA industry to improve skills in analysis of data layers to design and implement variable rate treatments... The planned outcome of this project was to increase returns to growers by improved understanding and management of within-paddock variability, and validation of PA systems under southern Australian conditions using large-scale trials...
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Catalogue: GRDC Updates
Sustainable management of most cereal diseases can be achieved by avoiding susceptible and very susceptible cultivars... A graphical representation of the relative effect of increasing pre-sowing crown rot inoculum levels, as determined using PredictaB, on grain yield loss (%) in three cereals in seasons with below average combined September and October rainfall (left) and above average rainfall for the same period (right) using 26 data sets collected in Victoria and South Australia during the years 2005 to 2010 (Hollaway et al. 2013)... There will be a greater need to monitor and apply foliar fungicides in wetter seasons...
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