The Mosaic Company

The University of Adelaide

Michael Mclaughlin

Roslyn Jane Baird

Rodrigo Coqui Da Silva

Jozefien Degryse

Dusan Losic

Kyle Freeman

Thomas Fry

Shervin Kabiri

Diana Tran

Ivan Andelkovic

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 (CaBOH)·(HO)) (e.g. when the carrier fertilizer is N- or K-based) and/or boron phosphate (BPO) (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.

Fertilizers containing slow and fast release sources of boron

Fertilizer granules containing elemental sulfur and a hydrogel which expands or swells in the soil to more readily disperse the elemental sulfur surface throughout the soil, which increases the elemental sulfur surface area available for oxidation, and ultimately uptake of sulfur by the plant. The elemental sulfur and hydrogel can be added to a fertilizer composition as either an exterior coating or co-granulated with the base fertilizer composition.

Swellable fertilizer granules containing elemental sulfur with increased oxidation rates

Growing community of inventors

Montacute, Australia

Michael Mclaughlin