GRANULATED SOLID FERTILISER FORMED USING MINERAL CLAYS, SIDEROPHILLIC CHELATING AGENTS, SECONDARY NUTRIENTS AND MICRO-NUTRIENTS.

摘要

The invention relates to a fertilising composition comprising iron, zinc, manganese, boron, copper, molybdenum, sulphur, calcium, magnesium, siderophores and natural clays. The percentages of the elements comprised by the fertilising composition are: 5 to 30% iron, 1 to 20% zinc, 0.1 to 10% manganese, 1 to 10% boron, 0.1 to 10% copper, 0.1 to 10% molybdenum, 1 to 10% sulphur, 1 to 10% calcium, 1 to 10% magnesium, 1 to 50% siderophores and 30 to 60% mineral clays. The clays of the composition can be a mixture of kaolinite, smectite (montmorillonite), mica, haematite, talc and orthoclase clay. The siderophores comprised by the fertilising composition can have been produced by means of microbial or chemical synthesis.