![](ElwhaSedimentDelta1.jpg)
View of sediment erosion.
Source: http://www.venturariver.org/2011/09/elwha-river-dam-removal.html
Kew Gardens
The use of mycorrhizal inoculation delivered via an injection of nitrogen gas in conjunction with other biostimulants and ground mulching has been used at Kew Gardens. The technique, called “terravention”, has been used successfully on mature trees, some of which were planted in the 1760’s. The claims of the treatment are that it reduces soil compaction, aerates soil, and improves drainage. This has become part of a decompaction program for mature trees at Kew.
![](KEWdecompaction.jpg)
The Terravent being used to relieve soil compaction around the chestnut-leaved oak.
Source: http://www.kew.org/plants/trees/decompaction.html
![](KEWTVtree_pagoda_274x183.jpg)
Pagoda tree, Sophora japonica that has been treated with Terravention.
Source: http://www.kew.org/plants/trees/styphnolobium-japonicum.html
![](KEWTVtree_orientalplane.jpg)
Oriental Plane (Platanus orientalis), one of Kew’s five ‘old lions’, that has been treated with Terravention.
Source: http://www.kew.org/plants/trees/platanus_orientalis.html
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