Preliminary Trials with Gibberellic Acid

Results of two trials conducted at new forest during 1958 with the object of studying the effect of Gibberellic acid on tree seedlings are described. The species experimented upon have shown considerable variation in their response to the treatment. In majority of cases height growth was accelerated. Generally speaking the stronger solutions gave greater height growth. Very rapid growth, however, produced undesirable traits associated with etiolation and was also accompanied by reduced ischolar_main development. Weaker strengths of the chemical gave less spectacular increase in height growth but the plants were apparently quite healthy and possessed well developed ischolar_main system.