6-Benzyladenine Gibberellic Acid 4 and 7
Promalin® Plant Growth Regulator
Promalin® Plant Growth Regulator 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
Apples
Pears
Resources
Learn more about Promalin
Product Literature
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Technical Documents
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Product Videos
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