Growers are now able to utilise the PREDICTA® B DNA-based soil test to detect the presence of Ascochyta blight inoculum (Phoma rabiei) in their paddocks. Initial testing has shown that the Ascochyta fungus was detected in 35 per cent of samples from the Northern Region. This finding is a concern […]
This article was originally published as an Agriculture Victoria CropSafe Crop Alert.
Chocolate spot has been found in some early sown vetch crops in the Northern Victorian Mallee. This disease develops in warm and humid canopies. Given suitable conditions this can be a damaging disease that may warrant control with fungicides, […]
During 2017 there is an increased incidence of canola white leaf spot in many regions of southern Australia. The disease is distributed worldwide, but in Australia, it is not usually severe enough to cause yield loss. However, if environmental conditions are favourable, it can result in significant defoliation causing reduced […]
During 2015 and 2016 the blackleg fungus overcame the blackleg resistance of some Group A cultivars. These cultivars dropped from Moderately Resistant (MR) to Moderately Susceptible (MS) and all updated ratings are available in the 2017 Autumn Blackleg Management guide. In the lead up to the 2017 season, fungicide application […]
These diaries are intended to update chickpea growers in New South Wales and Queensland with the current Ascochyta situation in 2017. They will be updated with observations throughout the season.
24 May 2017
Figure 1. Ascochyta blight stem lesion at 5-6 node stage
Ascochyta blight has been found in a chickpea crop in […]
Variable responses to fungicide timing to manage Yellow Leaf Spot in wheat led researchers to look more closely at how the fungus matures on stubble. Researchers are looking into how the fungus which causes Yellow Leaf Spot on wheat survives and matures on stubble, which in turn affects the onset […]
Blackspot Manager is a forecasting model for ascochyta blight (synonym: blackspot) of field peas. It can be used by agronomists and growers to help identify the best balance between early sowing and potential yield loss from ascochyta blight. Windborne ascochyta spores are released from infected stubble early in autumn, with […]
Leading into the 2017 season the risks presented by Ascochyta blight in chickpeas are at an elevated level. The occurrence of a new virulent strain of the Ascochyta blight pathogen has resulted in all resistance ratings being revised to susceptible or moderately susceptible. Throughout the Southern Region there is also […]
SARDI Pulse Pathologist Jenny Davidson gives an outline of the main pulse disease issues to watch out for heading into the 2017 season while at the February 2017 GRDC Research Update in Adelaide. In particular, Jenny addresses botrytis and chocolate spot as well as ascochyta resistance breakdown in lentils in […]
High grain prices are tempting at the best of times, particularly when another rotation staple is at historical lows. This it the predicament some chickpea growers are facing in the GRDC Northern Region, with high chickpea prices and low cereal prices heading into the 2017 season tempting some growers to […]