Home Crop Monitoring Canola School: New research in the fight against flea beetles

Canola School: New research in the fight against flea beetles


Flea beetles are considered one of the most detrimental bugs for the early levels of canola, however new research sheds some mild on how seeding date can be utilized to get forward of this pest.

On this Canola College episode, Hector Carcamo, research scientist at AAFC Lethbridge, shares some fascinating outcomes on how two species of flea beetle differ in their life cycles, how area dictates which species will dominate, and the way seeding date might assist a canola crop out on the subject of the pest.

In southern Alberta, the threat of flea beetle harm might be escaped by planting early, so long as there aren’t too many striped flea beetles. Going additional north to the Calgary or Excessive River space, there are extra striped flea beetles, that are extra lively in early spring.

In areas the place there are extra advanced habitats, there could also be extra refuge spots for useful bugs and predators of flea beetles, says Carcarmo.

“It looks like the more canola there is in the region, the fewer flea beetles we find in the fields, which sounds a little bit counterintuitive perhaps, but it probably has to do with the ability of flea beetles to fly long distances,” says Carcamo.

If there’s a area of canola that’s remoted from different canola fields, the flea beetles will congregate in that area, but when there are a couple of fields of canola shut collectively in the space, the inhabitants will disperse extra evenly over all of the fields.

Carcamo says that supreme situations for flea beetles, after they do the most feeding  is throughout scorching, dry spells. If there are colder temperatures in the forecast, the flea beetles aren’t in a position to fly and so they hop slowly right into a area, which can be advantageous for management measures round area edges.

Try the full dialog in the video, story continues beneath:

By way of predicting how extreme flea beetle populations will likely be in a sure space, notably with situations previous to the earlier winter, is an space the place Carcamo admits extra research needs to be executed. He says that flea beetles are considerably tough to forecast, and regional threat maps don’t exist for them.

To find out how you can forecast for them regionally, Carcamo says a couple of key components must be examined:

  • the inhabitants ranges must be documented;
  • summer season situations that have an effect on populations needs to be famous;
  • establish the predominant pure enemies that cut back numbers must be recognized;
  • figuring out the well being or physiological standing of the pest earlier than overwintering; and,
  • what the spring situations are.

Correct estimates of injury ranges in canola can be a key piece of knowledge going ahead. Extra research at the moment underway in Lethbridge by Justin Pahara, research scientist at AAFC, entails utilizing synthetic intelligence to find out a extra goal measure of flea beetle harm in younger canola.


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