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BlightBan® A506 - Nufarm US

BlightBan® A506

BlightBan uses the beneficial bacterium, Pseudomonas fluorescens A506, for the suppression or control of fire blight on pome fruits and the suppression of frost damage on cherry, apple, pear, almond, peach, tomato, potato and strawberry.

A506 also competes with fire blight bacterium for nutrients in apple and pear tree blossoms. This competition keeps the number of harmful bacteria low enough to avoid severe fire blight infection. Additionally, BlightBan aids in the reduction of fruit russeting caused by russet inducing bacteria.

Link to SDS and Label

WSDA Organic Certificate

Blight Ban OMRI Certificate

Major Crop/Use**

  • Fire blight and fruit russeting reduction, various rates
  • Frost protection
  • Grapes - Bunch rot reduction
  • Almond, apple, apricots, blueberries, cherry, nectarine, peach, pear, potato, strawberry, tomato


  • 10 x 300 gram packets per case


  • Pseudomonas fluorescens A506 71%

**Consult label for additional crop and rate information