Category Archives: pulses

Soybean stem fly on the move in soybeans in the Northern Rivers NSW

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Out­break report: Soy­bean stem fly (Melana­gromyza sojae) was detect­ed in late Jan­u­ary, 2018 in a 6-week old soy­bean crop near Casi­no, NSW. At the time of detec­tion, most stem fly in the crop were in the pupal stage. There were no plant ill health symp­toms (e.g. wilting/death), despite numer­ous exit holes made by lar­vae pri­or to pupa­tion. These holes are… Read more »

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 »

New aphid found in faba beans

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Megoura cras­si­cau­da has been found in parts of north-east and cen­tral New South Wales (Syd­ney, Tam­worth, and Breeza). The species orig­i­nat­ed in north-east Asia, and is close­ly relat­ed to the vetch aphid (Megoura vici­ae), found in Europe, Ethiopia and North Amer­i­ca. Its host range is most­ly lim­it­ed to Vicia species — vetch­es, faba or broad beans, and may extend to… Read more »

Helicoverpa activity and management in chickpeas

Heli­cov­er­pa are the pri­ma­ry insect pest of chick­peas. Ben­e­fi­cial insects that are present in many crops do not thrive in chick­peas, so suc­cess­ful heli­cov­er­pa man­age­ment relies heav­i­ly on mon­i­tor­ing and iden­ti­fi­ca­tion, appro­pri­ate­ly tim­ing con­trol to crop stage, and using the rec­om­mend­ed thresh­olds. Mon­i­tor­ing involves reg­u­lar in-field check­ing with a beat sheet. Addi­tion­al­ly, moth num­bers can be mon­i­tored using pheromone traps… Read more »

Soybean moth active again in 2017 in coastal Queensland

Major soy­bean moth out­breaks have recent­ly been report­ed in some coastal Bur­nett soy­bean crops, and less­er out­breaks in crops in the Bur­dekin. Soy­bean moth is gen­er­al­ly a minor soy­bean pest but major out­breaks have been report­ed peri­od­i­cal­ly in all soy­bean grow­ing regions. In extreme cas­es, crops can be total­ly defo­li­at­ed. Feed­ing dam­age Lar­vae feed most­ly with­in the leaves, mak­ing dis­tinc­tive… Read more »

Phytoplasma resurfaces in the summer of 2016/17

Phy­to­plas­ma (a spe­cialised bac­te­ria infect­ing plants) has been wide­ly report­ed in spring-plan­t­ed mung­beans from Cen­tral Queens­land to North West­ern NSW (Moree and Narrabri) and all areas in between. Symp­toms include mass­es of small deformed leaves, flow­ers and pods, plants remain­ing green at har­vest, and pos­si­bly an increased inci­dence of puffy pod. While in pre­vi­ous recent sum­mers, mod­er­ate to high lev­els… 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 »

Don’t let lucerne crown borer overwinter in your soybean stubble

Once again, lucerne crown bor­er (LCB) (Zygri­ta diva) has been active in soy­beans this sea­son. Worst affect­ed regions were the North­ern Rivers and the Liv­er­pool Plains in NSW, but reports were also field­ed from the Bund­aberg, Fas­sifern and Dar­ling Downs regions in Queens­land. In some of the severe­ly affect­ed crops, over 80% of plants were infest­ed, and up to 70%… Read more »

New APVMA permit for use of dimethoate to control mirids in faba beans.

In response to the recent con­fir­ma­tion of the dam­age poten­tial of green mirids in faba beans, Pulse Aus­tralia has suc­cess­ful­ly applied to the APVMA for a per­mit to allow the use of dimethoate for the con­trol of mirids in faba beans (PER82378). The per­mit is active from 1 June 2016 to 31 May 2021, and is applic­a­ble in all states,… Read more »