Chocolate Spot in Vetch – Northern Victorian Mallee

Figure 2. Botrytis spp. causing Chocolate spot in vetch.

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, […]

White leaf spot of canola

Figure 1. Early symptoms of white leaf spot on canola leaf.

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 […]

Monitor blackleg severity to ensure return on fungicide application

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 […]

The Northern Chickpea Ascochyta Diaries

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 […]

Blackspot Manager for field peas

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 […]