Author Archives: Hugh Brier

Leaf mining fly (Agromyzid) infestations in wheat in NW NSW and southern Qld

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Leaf mining caused by Agromyzid flies has recently been reported in wheat crops in the Goondiwindi/ Toobeah (late August) and Quirindi (late September) regions. Consultants reported their initial impression was that the damage symptoms, pale stripes on the leaves, resembled old stripe rust infections. However on closer inspection, the leaves were actually a windowed with frass visible inside the translucent… Read more »

Etiella on the move again

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Background: Significant etiella outbreaks have recently been reported in soybeans and mungbeans on the Darling Downs, in the South Burnett (SE Qld) and in the Moree and NorthernRivers regions of NSW. In some soybean crops on the Downs, 100% of plants were infested and 72% of axilliary buds damaged to varying degrees. These outbreaks are similar but more widespread than… Read more »

Spot the Difference

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Large numbers of different spotted larvae have recently been observed in many mungbean crops. The spotted larvae of the bean pod borer remains a significant pest of mungbeans yet the spotted fungus eating ladybird larvae poses no threat to crops. In recent years, significant populations of bean podborer larvae (Maruca vitrata) have been reported in crops as far west as… Read more »

Etiella outbreak in vegetative soybeans on the Darling Downs

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Etiella (Etiella behrii) larvae have been observed in significant numbers (up to 10 larvae per square metre) in vegetative soybean crops in the Cecil Plains/ Pampas regions of the Darling Downs, and in low numbers (<1/sqm) in a DAFF soybean trial at Kingaroy. These infestations are likely due to the current hot and dry seasonal conditions which historically favour increased… Read more »