Category Archives: mungbeans

Keep a lookout for phytoplasma in mungbeans and other summer legumes

Last sum­mer saw unprece­dent­ed lev­els of phy­to­plas­ma in sum­mer pulses/legumes (includ­ing chick­peas, mung­beans and pigeon peas) in all crop­ping regions in east­ern and north­ern Aus­tralia from the Ord Irri­ga­tion area (WA), Burdekin/Atherton Table­lands (NQ), to cen­tral NSW. The most like­ly insect vec­tor is the brown leafhop­per Oro­sius ori­en­tal­is, which has been detect­ed in recent (2017) spring crops. While plant­i­ngs of… Read more »

Rutherglen bug damage in mungbeans

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Although typ­i­cal­ly only in low num­bers in the North­ern Grains region, Ruther­glen bugs (RGB; Nysius vin­i­tor) were observed at very high den­si­ties (e.g. 50 RGB per pod) in many crops last year. A glasshouse study was con­duct­ed to deter­mine at what plant stage mung­beans were most sus­cep­ti­ble to RGB dam­age, in terms of both yield and seed qual­i­ty. To do… Read more »

Phytoplasma and virus problems in soybean and mungbean crops

A dev­as­tat­ing dis­ease was observed in sev­er­al pad­docks of soy­bean crops in the Branchview area of the Dar­ling Downs in late autumn 2016. Almost 100 per­cent of plants were affect­ed in some pad­docks. The affect­ed plants pro­duced no, or very few filled pods and instead had a pro­lif­er­a­tion of tiny imma­ture pods as shown in Pho­tos 1 and 2. The plants… Read more »

Bean podborer on the move in mungbeans

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Bean pod­bor­er (Maru­ca vit­ra­ta) have been observed in large num­bers (>20/m2) in flowering/podding mung­beans plant­ed from Jan­u­ary onwards in the Bur­nett region. They are like­ly to be present in oth­er coastal/subcoastal regions such as the Bur­dekin, Cal­lide Val­ley and the Wide Bay/Burnett (par­tic­u­lar­ly in late-plan­t­ed crops), and to a less­er extent in the east­ern Dar­ling Downs, and Emer­ald in Cen­tral… Read more »

Etiella in mungbeans and soybeans – do we manage the threat or the pest?

There is an under­stand­able lev­el of con­cern about how best to man­age etiel­la (Etiel­la behrii) in sum­mer mung­bean crops fol­low­ing the unex­pect­ed­ly high etiel­la infes­ta­tions (and cor­re­spond­ing seed dam­age and con­t­a­m­i­na­tion) in spring mung­bean crops on the Downs and in Cen­tral Queens­land and North West­ern New South Wales. Respond­ing to the etiel­la threat with­out react­ing pre­ma­ture­ly and cre­at­ing more pest… Read more »

Etiella alert for mungbean on the Darling Downs, Goondiwindi and Northern NSW growing regions

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A sig­nif­i­cant etiel­la out­break was recent­ly report­ed in pod-fil­l­ing mung­bean in the Moree region of North West­ern NSW. In this par­tic­u­lar crop, it is esti­mat­ed that etiel­la lar­vae have infest­ed pods on 50% of plants. Etiel­la eggs, at low den­si­ties, were also recent­ly observed in an ear­ly flow­er­ing crop near Bun­gun­ya (west of Goondi­win­di, Qld).

Seedling thrips in spring mungbean crops

There have been sev­er­al reports of seedling thrips in spring mung­bean crops in the Goondi­win­di region. Seedling thrips (Thrips tabaci) are also known as win­ter cere­al thrips or cot­ton seedling thrips. The thrips move out of win­ter cere­als when these start to dry off into new green spring growth such as mung­bean, navy beans or cot­ton. Spring plant­ed crops, espe­cial­ly… 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 »

Podborer pesticides under the spotlight in mungbeans

Severe and sus­tained bean pod­bor­er (Maru­ca vit­ra­ta) out­breaks were wide­ly report­ed in mung­beans over the past 2 sum­mers.. Pop­u­la­tions in excess of 100 lar­vae per square metre were observed in many crops. If left uncon­trolled such pop­u­la­tions not only impact on crop yield by reduc­ing pod set, they also severe­ly dam­age the pods that are set and delay har­vest matu­ri­ty.… Read more »