Resource type: Research

Showing 321 – 330 of 361 resources

Radial growth of hardwoods following the 1998 ice storm in New Hampshire and Maine

Ice storms and resulting injury to tree crowns occur frequently En North America, Reaction of land managers to injury caused by the regional ice storm of January 1998 had the potential to accelerate the harvesting of northern hardwoods due to concern about the future loss of wood production by injured trees. To assess the effect of this storm on radial stem growth, increment cores were collected from northern hardwood trees categorized by crown injury classes. For a total of 347 surviving canopy dominant and subdominant trees, a radial growth index was calculated (mean annual increment for 1999-2000 divided by the mean annual increment for 1995-1997).

Publication:
Canadian Jounal of Forest Research
Date:
July 28, 2002

Sugar Maple/Ginseng Research Projects

This project was conducted to determine if ginseng could be cultivated in a sugar maple forest for alternative income.

Publication:
Maple Syrup Digest
Date:
February 1, 2002

Long-term calcium addition increases growth release, wound closure, and health of sugar maple (Acer saccharum) trees at the Hubbard Brook Experimental Forest

We surveyed and wounded forest-grown sugar maple (Acer sacchamm Marsh.) trees in a long-term, replicated Ca manipulation study at the Hubbard Brook Experimental Forest in New Hampshire, USA. Plots received applications of Ca (to boost Ca availability above depleted ambient levels) or A1 (to compete with Ca uptake and further reduce Ca availability). We found significantly greater total foliar and membrane-associated Ca in foliage of trees in plots fertilized with Ca when compared with trees from Al-addition and control plots (P = 0.005).

Publication:
Canadian Jounal of Forest Research
Date:
September 28, 2001

Sugar Maple Tree Improvement Program

Maple producers and rural landowners throughout the maple syrup producing regions of the Northeast have expressed interest in acquiring improved sugar maple seedings for future sap production. A sugar maple tree improvement program for high sap concentration began in the 1960s under the direction of the USDA Forest Service.

Publication:
Maple Syrup Digest
Date:
February 1, 2001

Update on the Maple Tubing Sanitation Research in Ontario

In the spring of 1998, a research project was initiated to develop alternative methods for maple produces using plastic tubing systems. Although the results are only preliminary, the development of alternative sanitation methods that may reduce reliance on chlorine is looking very promising.

Publication:
Maple Syrup Digest
Date:
June 1, 2000