Dr. Mathers’ has conducted thousands of herbicide efficacy and phytotocxicity trials, invented five new bio-herbicides with provisional patents and assisted in the registration of seven herbicides in the US nursery industry. Dr Mathers provides consulting, testing, written reports, site inspections, statistical analyses, training and services as an expert witness in the areas of horticulture, pesticides, agriculture chemicals, environmental sciences, and assessment and evaluation. Read Dr. Mathers’ full biography.