TriCal Diagnostics At TriCal Diagnostics, we prioritize accuracy in our diagnostic laboratory. Our expertise in advanced testing methods, combined with extensive experience in plant pathology, enables us to effectively identify issues related to plants, soil, and water. We utilize a range of techniques, including polymerase chain reaction (PCR) testing, recombinase polymerase amplification (RPA), and traditional culture analysis, to deliver clear and reliable results that empower growers to make informed management decisions.
TriCal Group Companies are committed to the safe and responsible use of soil fumigation. We strive to protect you, your community and the environment. Our Companies rely on decades of experience, thousands of in-field application trials, and hundreds of university research studies to find the perfect formulation that is healthy for your crops, profitable for your farm, and safe for your community.
TriCal Diagnostics 
After eight years of exceptional leadership, renowned plant pathologist Steve Koike is retiring from TriCal Diagnostics.
Under Steve’s direction, TCD became a trusted name in plant pathology—known for accurate results, practical insights, and service that growers rely on.
We’re proud to share that Dr. Hanane Stanghellini, TCD co-founder, will continue this legacy of excellence. Same team. Same methods. Same commitment to the agricultural community.
TriCal Diagnostics 
Nematology is the scientific discipline concerned with the study of nematodes, or roundworms. There are beneficial nematodes that contribute to the soil and are involved in nutrient cycles that boost plant growth. But there are also bad, plant-parasitic nematodes, that have the power to ravage a crop and cause significant yield loss. Dr. Kristi Sanchez’s number one priority is to help growers identify and manage the bad ones so they harvest a healthy crop.
We recently had the chance to learn more about Dr. Kristi Sanchez’s path to becoming a Nematologist, and we can’t wait to share it with you. Explore her journey below, along with her valuable advice for anyone new to or interested in the field of Nematology. (Read More) TriCal Diagnostics 
May marked the start of Dr. Kristi Sanchez’s (our renowned Nematologist) busiest season, a kick-off to Spring field trials. This is the time to collect soil samples and monitor tree growth for our ongoing treatments. Here’s a breakdown of the trial sites Dr. Sanchez visited, including detailed insights into her work and that of the TriCal team at each location. (Read More)
