Skip to Main Content
The influence of treeshelters and irrigation on shoot and root growth of three California oak speciesAuthor(s): Douglas McCreary; Laurence R. Costello; Jerry Tecklin; Katherine Jones; David Labadie
Source: In: Standiford, Richard B., et al, tech. editor. Proceedings of the Fifth Symposium on Oak Woodlands: Oaks in California's Challenging Landscape. Gen. Tech. Rep. PSW-GTR-184, Albany, CA: Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture: 387-395
Publication Series: General Technical Report (GTR)
Station: Pacific Southwest Research Station
PDF: View PDF (320 KB)
DescriptionTreeshelters are individual seedling protectors that can accelerate height growth of native California oaks. There is concern, however, that this growth may occur at the expense of the roots, resulting in poor long-term field performance. This study could detect no differences between protected and unprotected seedlings in shoot weight, root weight or shoot/root ratios after 4½ years, suggesting that shelters do not adversely affect balances between seedling shoots and roots. Shelters did, however, stimulate height growth and reduce initial stem diameter growth, resulting in tall narrow plants that might not be able to stand upright without staking if shelters are removed too early. This study also evaluated the effects of irrigation levels on growth of three oak species—blue oak (Quercus douglasii), valley oak (Q. lobata) and coast live oak (Q. agrifolia). There were no significant differences among irrigation levels, suggesting that, in environments similar to the study site or in areas with fertile deep soils, supplemental irrigation after initial establishment is not necessary. Finally, the extremely rapid growth of both the valley oak and coast live oak in this study indicates that these species show promise for planting in urban landscapes.
- You may send email to email@example.com 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.
CitationMcCreary, Douglas; Costello, Laurence R.; Tecklin, Jerry; Jones, Katherine; Labadie, David. 2002. The influence of treeshelters and irrigation on shoot and root growth of three California oak species. In: Standiford, Richard B., et al, tech. editor. Proceedings of the Fifth Symposium on Oak Woodlands: Oaks in California''s Challenging Landscape. Gen. Tech. Rep. PSW-GTR-184, Albany, CA: Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture: 387-395
- Influence of winter-spring livestock grazing on survival and growth of Quercus lobata and Q. agrifolia seedlings
- Valley Oak Seedling Growth Associated with Selected Grass Species
- Acorn Yield During 1988 and 1989 on California's Central Coast
XML: View XML