Skip to Main Content
Above- and below-ground biomass accumulation, production, and distribution of sweetgum and loblolly pine grown with irrigation and fertilizationAuthor(s): David R. Coyle; Mark D. Coleman; Doug P. Aubrey
Source: Can. J. For. Res., Vol. 38: 1335-1348
Publication Series: Miscellaneous Publication
PDF: Download Publication (2.68 MB)
DescriptionIncreased forest productivity has been obtained by improving resource availability through water and nutrient amendments. However, more stress- tolerant species that have robust site requirements do not respond consistently to irrigation. An important factor contributing to robust site requirements may be the distribution of biomass belowground, yet available information is limited. We examined the accumulation and distribution of above- and below-ground biomass in sweetgum (Liquidambar sturacoflia L.) and loblolly pine (Pinus taeda L.) stands receiving irrigation and fertilization. Mean annual aboveground production after 4 years ranged from 2.4 to 5.1 ~g.ha-1.year-1 for sweetgum and from 5.0 to 6.9 ~g.ha-1.year-1 for pine. Sweetgum responded positively to irrigation and fertilization with an additive response to irrigation + fertilization. Pine only responded to fertilization. Sweetgum root mass fraction (RME)in creased with fertilization at 2 years and decreased with fertilization at 4 years. There were no detectable treatment differences in loblolly pine RMF. Development explained from 67% to 98% of variation in shoot versus root allometry for ephemeral and perennial tissues, fertilization explained no more than 5% of the variation in for either species, and irrigation did not explain any. We conclude that shifts in allocation from roots to shoots do not explain nutrient-induced growth stimulations.
- You may send email to firstname.lastname@example.org to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationCoyle, David R.; Coleman, Mark D.; Aubrey, Doug P. 2008. Above- and below-ground biomass accumulation, production, and distribution of sweetgum and loblolly pine grown with irrigation and fertilization. Can. J. For. Res., Vol. 38: 1335-1348
- Spatial and temporal patterns of root distribution in developing stands of four woody crop species grown with drip irrigation and fertilization
- Soil carbon and nitrogen content and stabilization in mid-rotation, intensively managed sweetgum and loblolly stands
- Biomass, Nitrogen, and Phosphorus Accumulation in 4-Year-Old Intensively Managed Loblolly Pine and Sweetgum Plantations
XML: View XML