BASF releases urgent notice regarding risk of herbicide carryover

(Kara Oosterhuis/RealAgriculture)

For Western Canada, the 2021 growing season has been one of the worst on record for both severe drought and extreme heat.

As a result, the risk of injury from herbicide carryover in sensitive crops in the 2022 growing season is high, so much so that BASF has issued an urgent notice to growers for several products.

Herbicide breakdown in the soil is driven by environmental conditions, particularly rainfall in the growing season and subsequent soil moisture, which supports microbial populations that breakdown herbicides.

BASF is making the following recommendations in addition to current rotational crop recommendations, on imidazoline-based herbicide labels and based off of Environment Canada weather data:

  •  Growers who farm in the dark brown, black, grey, or grey wooded soil zones who have received less than 125 mm of accumulated rainfall between June 1 and September 1, 2021:
    • If Solo ADV, Solo Ultra, or Viper ADV was applied in 2021, the field should NOT be planted to canola, durum wheat, or canary seed in 2022
    • If Odyssey NXT, Odyssey Ultra, or Odyssey Ultra NXT was applied in 2021, the field should NOT be planted to durum wheat, or canary seed in 2022
    • If Odyssey NXT, Odyssey Ultra, or Odyssey Ultra NXT was applied in 2020, then the field should NOT be planted to canola in 2022
  • Growers who farm in the brown soil zone who have received less than 125 mm of accumulated rainfall between June 1 and September 1, 2021 AND those who received less than 15 mm of rainfall in any of the months of June, July or August, 2021 (regardless of total accumulated rainfall between June 1 and September 1):
    • If Solo ADV, Solo Ultra, or Viper ADV was applied in 2021, the field should NOT be planted to canola, durum wheat, or canary seed in 2022
    • If Odyssey NXT, Odyssey Ultra, or Odyssey Ultra NXT was applied in 2021, the field should NOT be planted to durum wheat or canary seed in 2022
    • If Odyssey NXT, Odyssey Ultra, or Odyssey Ultra NXT was applied in 2020, then the field should NOT be planted to canola in 2022

Due to the extreme risk of crop injury, BASF will not be supporting canola, durum wheat, and canary seed as follow crops in the 2022 season if these recommendations are not followed, the company says.

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