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armyworm

Catalogue: Broadacre Field Crops DAFF QLD
Armyworm larvae are difficult to find in cereals crops as they hide at the base of plants or under clods of soil during the day... Search at the base of plants and under clods of soil to estimate the number of larvae per square metre... Monitor for larvae at dusk with a sweep net; sweep netting during the day can be unreliable...
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Catalogue: Broadacre Field Crops DAFF QLD
Armyworm larvae are difficult to find in cereals crops as they hide at the base of plants or under clods of soil during the day... Search at the base of plants and under clods of soil to estimate the number of larvae per square metre... Monitor for larvae at dusk with a sweep net; sweep netting during the day can be unreliable...
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Catalogue: GRDC Media
Darling Downs grain growers have been placed on alert for bands of dayfeeding armyworms that are on the march, defoliating sorghum, corn and millet crops and threatening yield potential... While reports suggest that the damage has been patchy so far, the Grains Research and Development Corporation (GRDC) warns that any outbreaks have the potential to cause significant yield loss if crops are defoliated before reaching physiological maturity... "The threat to win-ter crops is expected to be low, but mon-i-tor-ing as the crops emerge, par-tic-u-larly in prox-im-ity to army-worm out-breaks now, is recommended...
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Catalogue: GRDC Updates
The 2013 season demonstrated that the presence of armyworm in above threshold densities did not necessarily result in head lopping and associated crop losses... The season we set out to test the damage potential of armyworm in barley... Early work showed very high levels of infestation (up to 100% of racemes) resulted in no yield or oil content loss if the crop had adequate moisture...
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Catalogue: Broadacre Field Crops DAFF QLD
Armyworm larvae are difficult to find in cereals crops as they hide at the base of plants or under clods of soil during the day... Search at the base of plants and under clods of soil to estimate the number of larvae per square metre... Monitor for larvae at dusk with a sweep net; sweep netting during the day can be unreliable...
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Catalogue: GRDC Publications
GRDC Grains Research Update Goondiwindi, March 2014 as yields increase, i.e. the bug threshold for a 4t/ha soybean crop is twice that for a 2t/ha crop (Fig. 2), and similarly for mungbeans - see comparison between 1t/ha and 2t/ha crops (Fig. 3)... In summary, action thresholds for edible soybeans and mungbeans are set for bug populations predicted to damage 2% and 1.4% of seeds respectively... GRDC Grains Research Update Goondiwindi, March 2014 rule of thumb, aim to sample 5 widely-separated sites throughout a crop, with at least 4 x 1 m samples per site...
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Catalogue: Broadacre Field Crops DAFF QLD
The lawn armyworm occurs throughout Queensland but more commonly in coastal and subcoastal areas... Recorded hosts of lawn armyworms include barley, bermuda grass, green panic, kikuyu, McCoy grass, nut grass, oats, orchard grass, pangola, para grass, paspalum, sedge, wheat and most lawn grasses... Liberal applications of nitrogen fertiliser and water to lawns and pastures will often assist plant recovery after the armyworms have left or been controlled...
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Catalogue: Broadacre Field Crops DAFF QLD
The lawn armyworm occurs throughout Queensland but more commonly in coastal and subcoastal areas... Recorded hosts of lawn armyworms include barley, bermuda grass, green panic, kikuyu, McCoy grass, nut grass, oats, orchard grass, pangola, para grass, paspalum, sedge, wheat and most lawn grasses... Liberal applications of nitrogen fertiliser and water to lawns and pastures will often assist plant recovery after the armyworms have left or been controlled...
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Catalogue: Broadacre Field Crops DAFF QLD
The lawn armyworm occurs throughout Queensland but more commonly in coastal and subcoastal areas... Recorded hosts of lawn armyworms include barley, bermuda grass, green panic, kikuyu, McCoy grass, nut grass, oats, orchard grass, pangola, para grass, paspalum, sedge, wheat and most lawn grasses... Liberal applications of nitrogen fertiliser and water to lawns and pastures will often assist plant recovery after the armyworms have left or been controlled...
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Catalogue: Broadacre Field Crops DAFF QLD
Early sorghum pests include armyworms and soil insects... Photograph showing a row of Helicoverpa coloured larvae in lucerne.. Photograph of Rutherglen bugs nymphs and adults displayed in such a way to show the difference between nymph and adult body shape and colour..
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