Category Archives: helicoverpa

Helicoverpa pheromone trapping program concluded for 2017

The Heli­cov­er­pa pheromone trap­ping pro­gram has recent­ly con­clud­ed for the 2017 Winter/Spring sea­son. The pro­gram, run by the Queens­land Depart­ment of Agri­cul­ture and Fish­eries for the North­ern Grain Grow­ing region, forms part of the nation­al Heli­cov­er­pa mon­i­tor­ing net­work joint­ly run by cesar, SARDI, and DAFWA. The pri­ma­ry pur­pose of the trap­ping net­work is to detect high moth activ­i­ty, for both… Read more »

Insect pest management in sorghum – a refresher

Sorghum is most sus­cep­ti­ble to crop loss from insect pests dur­ing flow­er­ing and grain fill, and this arti­cle deals most­ly with these species (sorghum midge, heli­cov­er­pa and Ruther­glen bug). How­ev­er, some years there may be pest infes­ta­tions in veg­e­ta­tive sorghum. Veg­e­ta­tive sorghum Dur­ing the veg­e­ta­tive stages you may see a few army­worm or heli­cov­er­pa lar­vae caus­ing shot-holes in the leaves,… 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 »

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

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 »

Helicoverpa activity and pheromone trap catches to 16 September 2016

Heli­cov­er­pa punctig­era num­bers in pheromone traps look to be on the increase through Sep­tem­ber. The con­tin­ued migra­tion of H. punctig­era through spring is like­ly, if suit­able weath­er sys­tems occur, and it is like­ly that all sus­cep­ti­ble crops (chick­pea, canola, faba beans, spring mung­beans, spring sun­flow­ers) will expe­ri­ence heli­cov­er­pa pres­sure through Octo­ber and Novem­ber. Peter Gregg and Alice Del Socor­ro (Uni­ver­si­ty… Read more »

Predicting helicoverpa development rate in finishing and late pulse/canola crops

As the ear­ly and mois­ture stressed crops fin­ish up, and those that were under a storm kick on, it is chal­leng­ing to try and esti­mate whether small heli­cov­er­pa lar­vae in the crop should be con­trolled, or whether the crop will fin­ish up before they get to a dam­ag­ing size. There are a few things to keep in mind when mak­ing… Read more »

Helicoverpa armigera emergence from diapause boosts trap catches.

Heli­cov­er­pa moth activ­i­ty to 19 Octo­ber, 2015. Over the past 1–2 weeks we have seen increas­ing H. armigera catch­es in the pheromone traps across Queens­land (Qld) and north­ern New South Wales (NSW). The series of graphs of H. armigera and H. punctig­era trap catch­es from August to 19 Octo­ber are below. Includ­ed with these graphs are the cur­rent pre­dic­tions for… Read more »

Helicoverpa activity — pheromone catch map

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Heli­cov­er­pa pheromone trap catch­es to 18 Sep­tem­ber 2015 This infor­ma­tion is updat­ed week­ly on Fri­days and/or the fol­low­ing Mon­day. Where the data for the cur­rent week is not yet avail­able, click on the loca­tion mark­er to see data from pre­vi­ous weeks. The North­ern region pheromone trap net­work is part of a nation­al net­work of traps being run in 2015, fund­ed… Read more »

Helicoverpa activity and other pests to watch for in winter crops.

Heli­cov­er­pa armigera active now. This spring a num­ber of agron­o­mists have just start­ed mon­i­tor­ing pheromone traps across the north­ern region, and the results from the past two weeks illus­trate how use­ful pheromone traps can be. Over the past 1–2 weeks, the traps are catch­ing rel­a­tive­ly high num­bers of Heli­cov­er­pa armigera, and low catch­es of H. punctig­era. In Sep­tem­ber it is gen­er­al­ly assumed that… Read more »

Recognising caterpillar pests of canola.

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As canola sets and matures pods, and spring tem­per­a­tures rise, there are a num­ber of cater­pil­lar pests that are active in this crop. Along with heli­cov­er­pa there are dia­mond­back moth lar­vae (Plutel­la xylostel­la) and cab­bage white but­ter­fly lar­vae (Pieris rapae) in crops. It is crit­i­cal that you can dis­tin­guish the species, and be famil­iar with their respec­tive thresh­olds, in order… Read more »