Category Archives: grains

Identifying insect pests in stored grain

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Winter—time to visit your storages As temperatures drop and hopefully winter crop planting is completed, a little time invested around your storage facility will pay dividends. During our coldest months storage pests are not breeding rapidly and are less likely to fly. They are quietly sitting in grain residues in empty silos, or keeping warm in silos still holding grain…. Read more »

Whitefly in establishing grain crops

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SLW_fababeans17_AngusBoileau_Moree

This summer silverleaf whitefly (SLW) populations have been extremely high in many cotton crops, particularly in NSW. As these crops are defoliated, large numbers of SLW are moving out of the cotton into surrounding vegetation, including emerging grain crops. Whilst the number of SLW adults landing in seedling canola, wheat, faba beans and cereals can look dramatic, previous experience has… Read more »

Being prepared for Russian wheat aphid in the Northern grains region

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The spread of Russian wheat aphid (RWA) (Diuraphis noxia) in the Northern grains region is considered inevitable. When it might be detected in wheat and barley is less clear as the key drivers of its spread are not well understood in Australia. Wind is likely to play a part in moving winged aphids from south to north. The most northerly… Read more »

Making decisions about Rutherglen bug in maturing sorghum crops

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Developing sorghum head showing signs of RGB damage; undeveloped seed, and spotting on developing seed.

Rutherglen bug (RGB) numbers are persisting in many sorghum crops as they start to reach physiological maturity. Queensland Department of Agriculture and Fisheries (DAF) research has shown no evidence of yield loss as a result of direct feeding on grain once it reaches physiological maturity (black layer). However, because most crops this year have staggered head emergence, there are a… Read more »

High Helicoverpa armigera (corn earworm) activity now being seen in winter cereals

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Large flights of helicoverpa over the last 2 weeks (or longer in some districts) have seen significant eggs lays and larval populations in winter crops, including the winter cereals. It is not unusual to find both corn earworm and armyworm in cereal crops. Correct identification of the species present is very important as it influences damage potential and choice of… Read more »

Would you like to know whether you have resistant weeds on your farm?

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Over the next few months, you have the opportunity to have weed seed collection and resistance testing undertaken on your farm by the Queensland Department of Agriculture and Fisheries (DAF). The Grain Research and Development Corporation (GRDC) has contracted DAF to undertake the survey of weeds and herbicide resistance on grain-producing farms throughout Queensland.   The winter crop survey will… Read more »

Are there Russian wheat aphid in your wheat or barley? A short guide to checking and identifying.

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Key points Conditions suitable for the usual cereal aphid species will also be suitable for RWA. Aphid populations typically build rapidly in late July and August.  Do not assume aphids in cereals are just the usual oat and corn aphid. In the event of a Russian wheat aphid (RWA) infestation, early detection in spring is critical to prevent yield loss…. Read more »

Update on Russian wheat aphid outbreak in South Australia.

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The National Management Group (NMG), comprising all Australian governments, Grain Producers Australia and Plant Health Australia, met on 8 June 2016 to discuss the incursion of Russian wheat aphid (Diuraphis noxia) in South Australia. Acting on advice from the Consultative Committee on Emergency Plant Pests (CCEPP), the NMG agreed that it is not technically feasible to eradicate Russian wheat aphid… Read more »

Industry alert – Russian wheat aphids found in South Australia

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The South Australian government are currently responding to detections of Russian wheat aphid (Diuraphis noxia), which was initially found on a property in Tarlee in South Australia on 13 May 2106. Since the first detection, Russian wheat aphid has been found on a further 22 properties within 1,400 square kilometres, and the number is expected to rise. Investigations are underway… Read more »

Pest Alert: Russian wheat aphid (Diuraphis noxia)

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Call Biosecurity Queensland on 13 25 23 if you see this pest Russian wheat aphid (Diuraphis noxia) has been found on over 1,400 square kilometres of land in the mid-north of South Australia. Russian wheat aphid is a major pest of cereal crops which injects toxins into the plant during feeding, retarding growth and killing the plant. Russian wheat aphid… Read more »