Palm seeds :
In addition to its interest in revegetation, wassai seeds also have a very interesting agronomic interest. Indeed, the additional quantities of seeds can be used as fertilizer.
Seeds of fruit trees :
SMSE is in contact with Délices de Guyane to source seeds, resulting from the process of processing their different products (juices, jams...).
Poultry manure :
Poultry farming is highly developed in French Guiana, so it is relatively easy to obtain large quantities of manure from producers. This manure will be mixed with the topsoil used in the nursery to allow a better vegetative start of the trees, they will be more robust during their implantation on the mine, which will increase their survival rate.
Wood ash :
The wood ash, of which agronomic interest is well known, is recovered from the Kourou thermal power plant. These ashes can be used both as an amendment to improve the soil structure, and as a fertilizer to increase fertility. They will be kept away from the rain before being added to the soil mix at the nursery level.
Bagasse, a fibrous residue obtained after processing sugar cane, has a very important absorbing power. Although it is not yet used on the mine, experiments to combat soil erosion are planned. The bagasse is recoverable from the Saint-Maurice rum factory located in Saint Laurent du Maroni.
Sewage treatment plant sludge :
Sludge from sewage treatment plants is known for its agronomic interest. And seem adapted to our problem, indeed their high C/N ratio, their high concentration in orgnanic matter and their slow decomposition make it an organic input of choice for the fertilization of the trees. This is why we approached the Town Hall and the Kourou sewage treatment plant to obtain the authorization to import 50m3 of ca material on the mine of Saint-Elie to carry out various tests, particularly in the development of our soil mix used to make the Seed bombs.
Fishing waste :
Waste resulting from the processing of Guyanese fishery products is of agronomic interest. It can be fertilized by soaking fish waste in water for a few months. This liquid fertilizer can then be applied by sprinkling on the plants produced in the nursery.
Burlap bags :
Rather than bringing materials from the other side of the world, we came up with the idea of using burlap bags to fight erosion, our biggest enemy in the Guyanese climate. It turned out that a coffee roasting company in Guyana wanted to get rid of a substantial amount of these bags, which they considered to be worthless waste.