Home / Canola Watch / July 5, 2018 – Issue 14 / Page 2

• • 2018 – Issue 14

  Lygus bugs: Thresholds and scouting tips

  July 5, 2018

  • Insects
  • Lygus

  

  In very dry conditions: Threshold tables for lygus indicate that if canola is $12 per bushel and spray costs $8 per acre, the threshold at the early pod stage is 5 lygus adults or late instar nymphs per 10 sweeps (0.5 per sweep). In moist and high-yield conditions: The economic threshold is quite a bit higher. At early pod stage,…

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• • 2018 – Issue 14

  How late can you top dress fertilizer?

  July 5, 2018

  • Nitrogen
  • Nutrient management
  • Sulphur

  

  The ideal time for a sulphur top up is any time before flowering, but a top up at early flowering may pay off if plants are showing signs of sulphur deficiency. The ideal time for a nitrogen top up is before the 5-leaf stage of canola, but AAFC research out of Indian Head, Saskatchewan, shows that nitrogen top dress as…

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