Inorganic depot fertilizers

US4589906A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Horst Brunn · Meerbusch, DE
• Johannes Niggemann · Leverkusen, DE
• Peter Kohler · Djursholm, SE
• Franz Hund · Krefeld, DE

Key dates

• Filing date: Mar 28, 1983
• Grant date: May 20, 1986
• Expiry date: Mar 28, 2003

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C05D9/02
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A depot fertilizer composition comprising an inorganic matrix and another inorganic and/or organic component of the formula EQU X Me(II)O.[(1-x)/2]Me(III).sub.2 O.sub.3.YA.zI.aq in which PA1 Me (II) is at least one divalent metal, PA1 Me(III) is at least one trivalent metal, PA1 A is at least one inorganic acid or anhydride of an inorganic acid, PA1 I is at least one organic compound, PA1 aq is 0-9, PA1 X is from 0 to 1, PA1 Y is from 0.5 to 0.7, and PA1 Z is from 0 to 20, at least one of the components containing a plant nutrient element. The compositions are suited for fertilizing the leaves or full systems of plants growing in soil or in water.