Riverine Plains Blog

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Slugs

Canola is susceptible to damage by slugs

Understanding your slug risk this season

Key messages

  • seasonal conditions have been conducive to slug survival and population build-up over the past several years
  • slug monitoring should start in the spring prior to sowing canola, to better understand the risk
  • No one method of control is effective in destroying slug populations and growers should consider a range of control strategies as part of an integrated pest management strategy
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Getting proactive on slugs

Key Messages

  • Know what you’re dealing with – monitor, monitor, monitor 
  • Soil moisture data can help predict when slugs will become active 
  • Biological controls can be useful  
  • Bait at sowing and approximately four weeks later if required 
  • Vigour and speed of establishment in canola is important 
  • Key factors of bait efficacy are chance of encounter and consumption of active 

Slugs are one of the main establishment pests in the Riverine Plains, along with earwigs, slaters, millipedes, wireworms, and mice. The first step to controlling any of these pests, particularly slugs, is knowing what you are dealing with. 

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Slugs are again making their presence known across the Riverine Plains, especially in canola.

Have Slugs Slid Off Your To-Do List?

After two years of above-average rainfall, slugs are again making their presence known across the Riverine Plains, especially in canola. The moist conditions experienced in Spring (and, for that matter, harvest/Summer) have created ideal breeding conditions for slugs. Damage is being reported in previously unaffected areas and has been severe enough to require re-sowing in some canola paddocks. 

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