Navigation Links
Tree survival skills
Date:5/4/2009

URBANA, ILConsider the cumulative stresses that transplanted trees must endure from the time they are harvested until they become established in a landscape. Multiple stress factors can mean the difference between survival and death for trees. For starters, when "balled-and-burlapped" trees are dug prior to transport, the majority of the root system is often separated from the tree. After this initial stress, trees are typically taken to a loading site and placed on trucks or trailers for shipment. At each stage of the transplanting process, trees are exposed to mechanical shock and vibration that can further disrupt the root system and cause considerable injury.

As if these issues are not harmful enough, trees are not usually watered during transport. If they are not covered to limit evaporation, the trees are apt to suffer additional damage. Transplanted trees can also be subjected to rapidly changing temperatures and humidity levels as they are moved from sunny to shady sites, from low to high elevations, in and out of box trailers, and across plant hardiness zonesall of which may occur in the course of a few hours. All these stress factors can add up to significant trauma, shock, and even death for these vulnerable trees.

Although any one of these stress factors may be the sole cause of a tree's death or decline, it is more likely a combination of stress factors that leads to trees' reduced growth or death after planting. Water stress, mechanical damage, or extreme temperatures alone may be sufficient to severely damage or kill a transplanted tree; when these stressors are combined, the prospect of trees' survival in the landscape is greatly reduced.

Andrew K. Koeser, J. Ryan Stewart, Germn A. Bollero, and Donald G. Bullock from the University of Illinois at Urbana-Champaign, and Daniel K. Struve from The Ohio State University recently published a study in HortScience that examines the impact of stress on balled-and-burlapped trees. "We hypothesized that stresses associated with handling and transporting nursery stock during transplanting could be directly linked to reduced tree growth and survival within the first year of establishment. Identifying the specific stress factors responsible for transplant shock and when they occur is crucial if the process is to be improved", Stewart explained.

To determine the short-term impact of transplanting on health and establishment of woody plants in the landscape, the researchers studied maple trees at three critical stages in the transplanting process (initial harvest, handling, and transport) at three sites in Illinois and Wisconsin. Norway and red maples were subjected to three distinct treatments: root-pruned, handled, and transported. "Our intent was not to look at potential treatment differences between the two maple species, but rather be able to generalize our results to transplanting events of several woody species. We then used this information to identify key stages in the transplanting process that diminish transplanted tree growth and survival", the scientists said. Effects of water stress, root severance, and root-ball disruption on twig elongation and tree survival were measured for each treatment and compared with unaltered control trees.

Harvested root balls can be extremely heavy and are relatively fragile. The researchers observed visible damage of root balls during the study. "Based on the data, it appeared the majority of this damage occurred during the handling process. Results suggest rough handling before and after transport should be minimized in an effort to maximize growth and transplant success", remarked Stewart.

The scientists advise that handling should also be minimized when trees are transplanted in order to reduce stress and establishment time. They recommend careful planning to prevent unnecessary movements of trees at both the nursery loading area and landscape site and warn that if trees are placed in mulch or composted material for an extended period of time, burlap may quickly deteriorate in warm, moist substrate.

Information from this research study can be beneficial for tree growers and end-consumers alike. The resulting recommendations can translate to fewer financial losses by offering alternative handling and planting methods that enhance the health and vitality of transplanted trees.


'/>"/>

Contact: Michael W. Neff
mwneff@ashs.org
703-836-4606
American Society for Horticultural Science
Source:Eurekalert

Related biology news :

1. Lung cancer cells survival gene seen as drug target
2. Playing dead is no game for ant survival
3. Does fishing on drifting fish aggregation devices endanger the survival of tropical tuna?
4. Healthy parents provide clues to survival of young haddock on Georges Bank
5. Migrating songbirds learn survival tips on the fly
6. Spotted hyenas can increase survival rates by hunting alone
7. Gene panel predicts lung cancer survival, study finds
8. Early cessation of breastfeeding by HIV+ women in poor countries and child survival
9. Immune system protein accurate predictor of survival in pediatric septic shock
10. Scientists find elephant memories may hold key to survival
11. Monash researchers uncover cancer survival secrets
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/31/2016)... , March 31, 2016   ... ("LegacyXChange" or the "Company") LegacyXChange is excited ... of its soon to be launched online site for ... https://www.youtube.com/channel/UCyTLBzmZogV1y2D6bDkBX5g ) will also provide potential shareholders a ... DNA technology to an industry that is notorious for ...
(Date:3/29/2016)... 29, 2016 LegacyXChange, Inc. (OTC: ... and SelectaDNA/CSI Protect are pleased to announce our successful ... a variety of writing instruments, ensuring athletes signatures against ... collectibles from athletes on LegacyXChange will be assured of ... DNA. Bill Bollander , CEO states, ...
(Date:3/22/2016)... PUNE, India , March 22, 2016 ... new market research report "Electronic Sensors Market for ... Fingerprint, Proximity, & Others), Application (Communication & ... and Geography - Global Forecast to 2022", ... consumer industry is expected to reach USD ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... 23, 2016   Boston Biomedical , an ... designed to target cancer stemness pathways, announced that ... Orphan Drug Designation from the U.S. Food and ... cancer, including gastroesophageal junction (GEJ) cancer. Napabucasin is ... inhibit cancer stemness pathways by targeting STAT3, and ...
(Date:6/23/2016)... ... 2016 , ... Charm Sciences, Inc. is pleased to announce ... Research Institute approval 061601. , “This is another AOAC-RI approval of the Peel ... President of Regulatory and Industrial Affairs. “The Peel Plate methods perform comparably to ...
(Date:6/23/2016)... ... June 23, 2016 , ... Supplyframe, the Industry Network for ... Design Lab . Located in Pasadena, Calif., the Design Lab’s mission is to ... are designed, built and brought to market. , The Design Lab is Supplyframe’s ...
(Date:6/23/2016)... , June 23, 2016  Blueprint Bio, a company ... to the medical community, has closed its Series A ... Nunez . "We have received a commitment ... capital we need to meet our current goals," stated ... us the runway to complete validation on the current ...
Breaking Biology Technology: