Category Archives: Disease

Phytoplasma puffy pod and TSV are still present in CQ mungbean

In Central Queensland, both phytoplasma and tobacco streak virus are still a common occurrence this year in mungbean crops. Phytoplasma Transmitted by leaf hoppers, the specialised bacteria of phytoplasma can cause severe disease and reduce yield and/ or affected pods in mungbean and other grain legumes like soybean, peanuts, pigeon pea and chickpea. Phytoplasma infection in mungbean and other grain… Read more »

Sorghum rust in the air

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Disease surveys across northern New South Wales and southern Queensland have found that many sorghum crops have been impacted by rust. Sorghum rust is caused by the fungal pathogen, Puccinia purpurea, and is considered to be a relatively minor disease of sorghum in Australia. Symptoms Rust can infect sorghum crops at all stages of growth. Initial symptoms appear as small… Read more »

Disease alert: soybean downy mildew

Disease surveys across southern Queensland have revealed a high incidence of Downy mildew in several soybean crops in April 2022. The downy mildew pathogen, Peronospora manshurica, infects crops during periods of rainy, humid weather. Though widespread, the disease is likely to have a minimal impact on yields. The pathogen can survive between soybean crops in infected seeds, on volunteer soybeans or alternative… Read more »

Mungbean disease alert

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After the wet weather in recent weeks there have been several reports of powdery mildew in mungbeans across Queensland and northern New South Wales, and Fusarium wilt has been found in several southern Queensland crops. Monitor crops closely for disease symptoms, and contact our plant pathologist, Lisa Kelly at [email protected] or 0477 747 040 for further information on disease diagnosis…. Read more »

Root rot reported in Burnett peanuts

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Root rot reported in Burnett peanuts The DAF pathology team has recently received peanut samples with Neocosmospora root rot from crops growing in the Burnett region. Neocosmospora root rot is a sporadic but potentially severe disease caused by the fungus Neocosmospora vasinfecta var. africana. Outbreaks have occurred previously in the Burnett region in 2005, and also in the Emerald region… Read more »

Ergot reported in southern Queensland sorghum crops

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The DAF pathology team has recently received reports of ergot in sorghum panicles growing near Toowoomba in southern Queensland. Sorghum ergot is caused by the fungus Claviceps africana. The disease can result in poor seed set, lower grain quality, and can cause harvesting issues due to the sticky honeydew on sorghum panicles. Infected grain will be replaced by fungal sclerotes… Read more »

Is your mungbean seed free of halo blight?

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Halo blight, caused by a bacterial pathogen (Pseudomonas savastanoi pv. phaseolicola) is one of the major diseases of beans world-wide, particularly in temperate regions. In mungbean, symptoms on leaves start as small, water-soaked lesions that are surrounded by a yellow-green halo (Figs 1 and 2). Symptoms may be visible at the 1st or 2nd trifoliate leaf stage and are often… Read more »

Keeping an eye out for diseases this winter

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From this winter, the Beatsheet will start expanding to incorporate information on broadacre crop diseases (including alerts, identification and management). Recent alerts have been issued to watch for the diseases below: Ascochyta blight – reported in chickpeas in the eastern Downs Cereal rust – reported from southern Queensland and northern New South Wales. Bean yellow mosaic virus – detected in… Read more »

Tobacco streak virus strikes again in mungbean crops in Central Queensland: how to avoid future risks

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Key points: There was a resurgence in tobacco streak virus (TSV) disease in mungbeans in early 2020 TSV is restricted to central QLD and closely related to the distribution of parthenium weed Growers are encouraged to avoid areas of dense parthenium to reduce risk In autumn of 2020, tobacco streak virus (TSV) was found to be common in all mungbean… Read more »

Have you seen this mungbean disease recently?

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Several growers and agronomists across southern Queensland have reported extensive damage to their mungbean crops due to Fusarium wilt this season. Large areas of affected paddocks have plants that are wilted or dead, resulting in significant yield losses. The results of DAF annual disease surveys over the last five years have found that the disease is most common in crops… Read more »