Timing important, research shows Growth regulators stimulate ponderosa pine seedling development
Effect of growth regulator treatment on development of ponderosa pine seedlings was examined in a greenhouse experiment. An auxin treatment containing 0.5 ppm indoleacetic acid and 0.05 indolebutyric acid used in combination with a shoot inhibitor produced superior root growth, but comparisons with other tests show that treatment timing and physiological condition of stock are important considerations.
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Author(s): Michael S. Coffman, Howard Loewenstein
Publication: Tree Planters' Notes - Volume 24, Number 1 (1973)
Volume: 24
Number: 1