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Guillaume Grapevine Nursery Confirms Positive Effects From Mycorrhization

Posted on May 17, 2016

Following 5 years of experimental research trials in Bordeaux , Burgundy, Champagne and Southern Italy, Guillaume Grapevine Nursery (GGN) has created a proprietary strain of mycorrhiza, and has proven the efficiency of a successful mycorrhization to establish stronger grapevines and promote longer vineyard life. GGN is working quickly to make this particular strain available to their California nursery operations, located in Knights Landing, California.

GGN has proven the following positive effects of mycorrhization :
- Much higher resistance to stress and drought
While uninoculated young plants died from water stress, those inoculated with mycorrhiza continued to grow
- Better growth in hard conditions
In Medoc's (Bordeaux) gravelly and poor soils the mycorrhized plants had double the growth when compared to the uninoculated plants without symbiosis
- Increased salt tolerance
In Puglia (Southern Italy) the mycorrhized plants grew very well, while uninoculated plants showed leaf burn from the high salinity in the soil
- Greater responsiveness to pathogen attacks
In Champagne, mycorrhized plants show less susceptibility to downy mildew as compared to uninoculated plants
These observations and results can be explained by two phenomena :
- Because of the symbiosis between the vine roots and mycelium, good mycorrhization multiplies the colonization of soil by 1,000 times
- Symbiosis, when well established, creates a “priming effect” of the defense system of the plant, which makes it able to respond more quickly to pathogen attacks
For more information visit or contact GGN California in Knights Landing, California at (530)735-6821.

About Guillaume Group
Guillaume Group has a worldwide reputation for high quality grapevine production, with more than 120 years of commitment to uncompromised quality and continued innovation. Its origin goes back to 1895, when the Franche-Comté region had to rebuild its vineyards following the Phylloxera crisis. Albert Guillaume began grafting vines, setting up a nursery that sold planting material in several wine-producing regions of France. His knowledge and experience has been passed on from one generation to the next as the company has continued to evolve and develop, earning a name and ongoing recognition in the worldwide grapevine industry. Following its expansion to South America, in 2008 Guillaume Company set up a subsidiary in the United States, Guillaume Grapevine Nursery, in order to work with North American grape growers, providing top-quality material and well-recognized experience.


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