Transform Insecticide aphid control update

Canola crop infested with green peach aphids, June 2014
Same crop a few hours later showing aphids on the ground and not on the crop!

Anyone who has had to deal with the recent outbreak of aphids in the south is no doubt had aware of the very negative impact that they have had on canola crops in some key areas.

Transform insecticide, newly released from Dow AgroSciences, has been used extensively throughout the Mid North of South Australia for green peach aphid (GPA) control in canola this season. Over 20,000 ha has been successfully treated for aphids that have in some cases survived earlier applications of other insecticides, suggesting high levels of resistance. The recent discovery of Beets Western Yellows Virus (BWYV), or Turnip Yellows Virus for which GPA are a vector, has brought aphid control into focus in other Canola growing areas across SA.

Transform offers fast and effective control of all aphid species, even in cold weather. Transform works both by contact at the time of application and also systemically providing residual control of feeding aphids for up to 2 weeks after an application. Once dry on the plant, Transform has no effects on beneficial insects such as predatory wasps, spiders and lacewings.

Transform offers fast and effective control of all aphid species, even in cold weather. Transform works both by contact at the time of application and also systemically providing residual control of feeding aphids for up to 2 weeks after an application. Once dry on the plant, Transform has no effects on beneficial insects such as predatory wasps, spiders and lacewings.

It is however important that we keep in mind a number of things given that Transform is such a valuable addition to the armoury of insecticides which can be used against green peach aphids.

1. Do NOT use more than 2 applications in either canola or winter cereal crops. Why is this important? It is important because we do not wish to overuse this very effective new tool and promote the development of resistance in aphid populations. Harness Transform for use where it best fits, e.g. when populations are enormous or when other modes of action (SP. OP or carbamate insecticides) simply do not work.

2. Adhere to the application timings in canola and cereal - please read the label. Why? Extensive residue trials were conducted to show that the use of the product - according to the label directions - will not result in Transform residues in canola or winter cereals at levels that exceed the allowable levels. Failure to follow the label could result in detectable residues or residues exceeding export MRLs, and put important Australian trade at risk.

3. Follow the WITHHOLDING PERIODS for each crop. HARVEST WITHHOLDING PERIODS For cereal grains and canola, the harvest withholding period is determined by the use pattern. Transform should not be applied to cereals after the flag leaf stage, or more than 14 days after full flowering of canola.

Grazing and Stockfood withholding periods Canola forage (failed crop), straw and stubble and Cereals: Do not graze or cut for stockfeed for 14 days after application

Livestock destined for export markets The grazing withholding period only applies to stock slaughtered for the domestic market. Some export markets apply different standards. To meet these standards, ensure that in addition to complying with the grazing withholding period, that the Export Slaughter Interval is observed before stock are sold or slaughtered.

Export Slaughter Interval (ESI) – 14 days After observing the grazing withholding period, livestock that has been grazed on or fed treated crops should be placed on clean feed for 14 days prior to slaughter.

CROPS FOR EXPORT:For cereals and canola, adhering to the label use pattern will ensure that there are no residues of Transform in grain at harvest, and that grain can be exported to any market around the world, whether they have the appropriate MRLs in place or not.

Click here for more information on Transform Insecticide.