CERIUM TESTING, LLC
OCALA, FLORIDA

Cerium Testing offers their agricultural expertise on a consulting basis. We are experts on agricultural practices globally and are interested in helping clients in general agronomy, crop pest management, crop nutrition, field trial research, market studies, GLP field study director services, and legal expert witness services. We are based in Florida and have a global network of high caliber professionals. is the principal consultant at Cerium Testing. John has over 20 years of global experience in agriculture. He holds a Ph.D. in plant pathology and an M.S. in entomology and has particular expertise in pesticides, crop production, agricultural pest management, conventional and organic agriculture, plantation agriculture, and crop injury legal cases. In addition to his experience in the U.S. agriculture industry, John has collaborated in many global agriculture projects in Latin America, the Caribbean, Asia, and west Africa. John is bilingual in English/Spanish. He has worked on diverse and major projects in the U.S., Asia, Europe, the Caribbean, and Latin America. is a senior consulting partner at Cerium Testing. He is a Ph.D. plant pathologist and has additional expertise in biochemistry, soil science, crop nutrition, and product development. He resides in Tucson, Arizona, where he maintains a pathology lab and greenhouse. Jerald has provided his agriculture expertise to a variety of important clients over the years, including the major vegetable producers in Mexico and the southwestern U.S. He is a superb technical problem solver, particularly in crop yield improvement programs. His seminars and talks are very much solicited in the industry. Cerium Testing offers exceptional insight in seemingly complex agricultural settings, and we will deliver that expertise efficiently to our customers. Residual herbicide chemicals are a threat to crop production. As a crop consultant, I have seen many cases of severe crop damage resulting from herbicide contamination and damage due to past applications on the soil as well as herbicide spray drift from neighboring fields. There are many registered herbicides and the potential for crop injury varies according to the specific chemical (active ingredient) as well factors described on the product label including rotational crop restrictions, mixing and spray application, soil types, application rates, weather, etc. Crop damage caused by residual herbicides is often blamed on other products including fertilizers and crop protection chemicals. When lawsuits ensue, an agronomy expert is required in order to determine the actual cause of the crop injury.