Accurate soil carbon testing is essential for participating in carbon stock programs, and the requirements are fairly stringent and straightforward. Proper soil sampling for carbon can be achieved by taking into account depth and frequency as well as probe type and size. Sample Collection Approach: Depth and Frequency When sampling for bulk density, it’s important...Read More

Since the turn of the century, investigating the feasibility of sequestering carbon using soil as a sink has become a prime focus and an essential part of combating climate change. Carbon programs like Verra and BCarbon offer opportunities for landowners to earn “carbon credits” by increasing soil carbon stocks. Understanding carbon stocks is the first...Read More

One of the most common issues that arise in customer service at an agricultural testing laboratory is the dispute over different results for samples meant to represent the same whole. That whole could be a specific field, a stack of hay bales, a bin of mixed feed or plants within a field. This is where...Read More

For successful soil sampling, you must submit a quality sample into the lab.  Below are some points to consider before heading out to soil sample. Choosing a Soil Probe Soil probes are available with 12-inch or 18-inch buckets.  If you will be sampling in heavy clay soil, a 12-inch probe is recommended as sampling in...Read More

When we make fertilizer recommendations for upcoming crops, it’s good to consider nitrogen credits from past crops. Leguminous species like soybean, alfalfa, and clover may provide a nitrogen credit for the next season’s crop. However, there are a few misconceptions about where the nitrogen credit comes from. Soybean Nitrogen Credits For this example, we’ll talk...Read More

Ward Laboratories uses soil test methods developed and calibrated by land grant universities.  Standard methods are published in several manuals.  We prefer to use standard methods that have performed well for many years. Soil pH & EC: We use a 1:1 water pH.  This means we measure 10 grams of soil and 10 mL of...Read More