A plant growth stimulant and a process for producing the¹plant growth stimulant

摘要

A process for the producing a plant growth stimulant derived from a mixture of seaweed and peat. A sodium carbonate aqueous solution is prepared, to which is added seaweed and peat. The aqueous mixture of seaweed and peat is heated to a temperature of approximately 150°C at 5 bar for approximately for four hours, until substantially all of the alginates, nutrients and humates in the seaweed and peat have passed into solution. the aqueous mixture is then cooled, and the aqueous solution containing the extracted alginates, nutrients and humates is separated from the residue. The solution is a 15% concentrate of alginate, nutrients and humates and may be preserved, or alternatively spray dried. The concentrated solution has been found to be a particularly good plant growth stimulant. The residue is composted.