Loblolly Pine Gibberellic Acid Experiment
A favorable response to an experimental gibberellic acid treatment is illustrated by the 2-year-old loblolly pine at right. When this greenhouse plant was a year old, it was sprayed once with a solution containing 400 of gibberellic acid. A year later it has a stem twice as thick as the untreated pine at left, and moderately taller.
Size: 3001px × 3882px
Photo credit: © Photo Researchers / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: acid, biology, color, comparison, enhance, enhancement, experiment, gibberellic, greenhouse, loblolly, pine, plant, science, shot, studio, treatment, tree
