Marrone Bio Innovations (MBI), a global provider of bio-based pest management and plant health products, has received a U.S. patent covering applications of products containing anthraquinone derivatives, including the company's flagship product Regalia biofungicide.

The issued claims cover methods for increasing plant growth, root initiation, and extension when plant roots are treated with an anthraquinone derivative.

MBI says the new patent protects uses of Regalia and any future MBI products containing these active ingredients.

Data has shown Regalia applied to bare-root plants increases transplant health, root mass, and weight. Fruit weight, new root counts, and plant viability have also been increased by pre-plant dip, soil drench, and drip irrigation applications of Regalia.