TreeBoost® HC Ecto-Slurry

Ectomycorrhizal Inoculants

produitTreeBoost® HC Ecto-Slurry is an inoculum that contains beneficial ectomycorrhizal fungus. This is a liquid inoculum produced from axenic live culture of Hebeloma crustuliniforme (Bull ex. St.Amans) Quel., an ectomycorrhizal fungus. The inoculum contains live fungal mycelia grown in liquid media as slurry form (TreeBoost® Ecto-Slurry), which are known to colonize the roots of ectomycorrhizal fungal tree species and form symbiotic associations (Mycorrhizae) upon contact. Mycorrhizae greatly increase root surface area absorption capacity of plants via mycelial strands and extrametrical mycelia beyond the feeder roots. The mycorrhizal fungi are beneficial microorganisms that enhance plant growth and vitality by increasing nutrient uptake, water absorption, and help plants to reduce stresses and overcome severe growing conditions. TreeBoos is used to inoculate containerized or bare-root tree seedlings during seedling production in forest nurseries.

Product R&D Background

Mycorrhizas are symbiotic associations between fungi and the roots of most plant species. Mycorrhizal fungi are crucial elements in plant systems and known to facilitate plants with nutrients and water in exchange of carbohydrates. The fundamental importance of the mycorrhizal association in restoration and to improve revegetation is well recognized. There are now numerous examples of the ability of nursery seedlings inoculated with mycorrhizal fungi to enhance growth and survival of trees after outplanting.

The production of superior planting stock is one of the key issues and of high priority in forest regeneration programs. Reforestation efforts are often constrained by poor quality seedlings and lack of mycorrhizal association with their root systems.

Our research team has been involved in the reclamation of Canadian oil sands areas in Alberta, Canada using mycorrhizal biotechnology. Surface mining of oil sands by the Canadian tar sand industry produce huge areas of disturbed lands made of composite tailing sand. The composite tailings are one of the most challenging materials for land reclamation and are generally known to be nutrient poor, with high alkalinity and salinity, extremely low in organic matter, and lack of necessary biological activity.

Our effort has led to the development and registration of one product called TreeBoost HC EctoSlurry, an ectomycorrhizal fungal inoculants highly effective in improving the fitness of coniferous seedlings in forest nurseries, on deforested lands, and on oil sand spoils. Furthermore, two other amazing products shall be registered soon under the Fertilizer Act of the Canadian Food Inspection Agency (CFIA).

TreeBoost® Product Effectiveness

TreeBoost® products enhance up to 75 % plant survival, up to 115 % plant growth and development, up to 300 % organic matter accumulation in soils, and up to 50 % biodegradation of petroleum hydrocarbons on degraded, mined, or contaminated sites (Microbes for Restoration of Degraded Ecosystems 2016, Book Chapter 11: 259-284; Proceedings of Mine Closure 2015, Chapter 11: 1061-1070; Mycorrhiza 2014, 24(6): 431-441; Applied Soil Ecology 2010, 46: 183-191).

TreeBoost® products improve up to more than two fold plant growth and development on boreal deforested lands (New Forests 2008, 35: 235-253; Canadian Journal of Forest Research 2006, 36: 1684-1694).

TreeBoost® products increase between 22.6 % and 53.3 % seedling volume growth in forest nurseries, four and eight months after application. As a result, seedling production cycle may be reduced by up to 29 % using TreeBoost® products while obtaining the same size high quality seedlings. A bioeconomic study of using TreeBoost® products in forest nurseries has demonstrated a Benefits/Costs Ratio varying from 3 to 12, a Return on Investment between 2 and 11, and an increase in client net profit between 0.01 $ and 0.025 $ per seedling depending on tree species (2015 nursery tests – Scientific article in preparation) (Past studies – Native Plants Journal 2008, 8(3): 271-281; New Forests 2001, 22(3): 179-197).

Oil Sands – Picea Glauca

Oil Sands – Pinus Banksiana

Deforested lands

Forest nurseries