Diamond Back Moth control this autumn

07.09.2017

With a third generation of Diamond Back Moth (DBM) expected to emerge any day, Selchuk Kurtev, IPM manager at Certis, urges growers to maintain ongoing vigilance.

As a species that lays eggs and develops rapidly, it’s imperative that growers continue to monitor levels and be prepared for a third generation of DBM that could land imminently.

DBM can still come in later in the season, and with autumn planting now taking place, particularly for brassica crops, it’s important not to become complacent.

IPM programmes need to be robust enough to protect crops through to the point of sale in the spring, and therefore, ongoing protection is vital. As is alternating between biologicals and conventional chemistry and utilising new modes of action where possible, such as Agree 50 WG.

Top tips for DBM control using Agree 50 WG:

  • Monitor pest pressures in the UK using the tools provided by industry bodies such as AHDB Horticulture, and be aware of local population levels
  • Check the crops regularly for signs of young caterpillars, and apply Agree 50 WG where they are spotted as soon as possible, as young larvae are more susceptible to the mode of action
  • Take into account the growth stage of the plant, and treat new growth regularly - as often as every two to three weeks from potting, through to the end of September, as crops will be developing at a fast pace
  • As growth slows, consider increasing the interval between applications
  • If rain is expected within 24 to 48 hours of application, delay spraying Agree 50 WG to avoid it washing off