Knowing your soil test results is one thing. Knowing how the lab got those numbers — and which extractants it used — is just as important for making solid fertility decisions. “At Ward laboratories, ...

New soil testing by the Los Angeles County Department of Public Health has found high levels of lead and other toxic metals at homes destroyed by January’s catastrophic wildfires and cleared by ...

Agricultural soil testing is critical to determining soil’s nutrient concentration and variability across your fields. It is ideal to test your fields’ soil at least every two to three years to inform ...