6-Benzyladenine Gibberellic Acid 4 and 7

Promalin® Plant Growth Regulator

Promalin is a mixture of gibberellic acid 4 and 7 (GA4+7) and 6-benzyladenine (6-BA), plant growth regulators responsible for cell enlargement, elongation, and cell division. Promalin provides many benefits for apple growers, depending on when it is applied.
  • During bloom, it improves fruit shape, making apples elongated or “typy”, a desired quality in several varieties, especially Red Delicious and Gala
  • Applied from late boom to 40 days after bloom, Promalin improves fruit size and finish, including russet control
  • Used after frost events, Promalin can help set fruit that would otherwise fall off
  • In nursery trees, Promalin increases branching
  • In pears, Promalin improves fruit set, increasing yields
Improved fruit quality

Consistently improves fruit finish with lower incidence of russeting and cracking.

Harvest management

Increased apple yield by 6% on average and shifted sizing category by one-half to one size.

Multifaceted product

One product with various uses and benefits for growers.

Key Crops



Learn more about Promalin

Please contact your local distributor for more information.

For the full list of brands available in your country, label information, or the SDS, please contact your local distributor