Skip to main content

Effect of the Growth Regulator Uniconazole on Biomass Allocation of Bareroot Loblolly Pine Seedlings

The full text article is temporarily unavailable.

We apologise for the inconvenience. Please try again later.

Improving seedling performance by reducing seedling height can be an important aspect of nursery management. The plant growth regulator uniconazole was applied to regulate height growth of nursery-grown loblolly pine (Pinus taeda L.) seedlings. Tests involving a foliar spray (0, 0.125, 0.25, 0.5 and 1.0 kg ai/ha) or a wick application (0, 125, 250, 500, and 1000 ppm) were conducted in Alabama, Georgia, and South Carolina. The wick applicator consisted of a perforated plastic pipe covered with a sponge cylinder supplied by a reservoir. With both application methods, as the rate of uniconazole increased, seedling height, root-collar diameter, and biomass decreased. Compared to the controls, uniconazole decreased the percentage of seedlings with root-collar diameters greater than 4.7 mm. At lifting there was no difference among rates for root/shoot ratio, but root/shoot ratios of uniconazole treated seedlings increased significantly after outplanting. Eighteen months after outplanting, there were no treatment effects on seedling height or survival. Wick applications of uniconazole merit further research because of soil persistence and costs associated with spray applications. South. J. Appl. For. 28(1):41–47.
No References
No Citations
No Supplementary Data
No Article Media
No Metrics

Keywords: Pinus taeda; bareroot nursery; environmental management; forest; forest management; forest resources; forestry; forestry research; forestry science; height growth; natural resource management; natural resources; plant growth regulator; top-pruning

Document Type: Regular Article

Affiliations: 1: Atlantic Baptist University Moncton New Brunswick E1C 9L7 Phone: (506) 858-8970, ext. 140;, Fax: (506) 858-9694, Email: [email protected] 2: School of Forestry and Wildlife Sciences and Alabama Agricultural Experiment Station Auburn University AL 36849-5418

Publication date: 01 February 2004

  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more