Myco Sciences Ltd. of Buckinghamshire, United Kingdom has been granted U.S. Patent No. 10,729,139 for "Acid-Solubilized Copper-Ammonium Complexes and Copper-Zinc Ammonium Complexes, Compositions, Preparations, Methods, and Uses." The patent, which issued on August 4, 2020, covers copper-containing compositions having high efficacy in preventing the reproduction and growth of microorganisms such as bacteria, fungi, and viruses. The compositions are expected to have significant use in the improvement of agricultural crop yields.