Fertilizers containing slow and fast release sources of boron

US11066340B2 · kind B2 · utility

Assignee

• The Mosaic Company · US

Inventors

• Michael McLaughlin · Cherryville, AU
• Jozefien Degryse · Jerramungup, AU
• Roslyn Baird · Clarendon, AU
• Rodrigo Coqui da Silva · Upper Hermitage, AU
• Kyle G. Freeman · Agoura, US
• Thomas Fry · Burbank, US

Key dates

• Filing date: Jul 21, 2020
• Grant date: Jul 20, 2021
• Expiry date: Jul 21, 2040

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C05G5/12
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A granular fertilizer product having at least two sources of boron having different solubilities to tailor boron availability during the entire growing season of a plant, while reducing the risk of boron toxicity. A first source of boron can include a sodium-based or highly water soluble boron compound such as sodium tetraborate and/or boric acid, while a second source of boron can include a calcium-based boron compound such as colemanite (CaB3O4(OH)3.(H2O)) (e.g. when the carrier fertilizer is N- or K-based) and/or boron phosphate (BPO4) (e.g. when the carrier fertilizer is P-based). The solubility of the first source of boron is higher than the solubility of the second source of boron such that the sources of boron have different release rates into the soil.