Each year, as October comes to a close, I receive calls from producers asking about the best time to analyze soil biology using the Soil Health Assessment (SHA) or Phospholipid Fatty Acid (PLFA) test packages. These tests provide key insights into soil microbial activity and overall soil health: SHA measures microbial biomass, water-extractable carbon and...Read More

Carbon is probably one of the most well-known elements today. There is a global emphasis on carbon dioxide emissions and carbon capture. In terms of agriculture, much of this focus has centered on capturing carbon by increasing soil organic matter. Organic matter encompasses all organic materials present in soil (living microorganisms and undecayed residues). Roughly,...Read More

In February 2022, Ward Laboratories, Inc. introduced a new tool to measure soil health. The Soil Health Assessment (SHA) is made up of four analyses. There are two biological, one chemical and one physical measurement to evaluate soil health. Biological The first biological test is the 24-hour CO2 soil respiration measurement. We take 40 grams...Read More

Our recent partnership with GrowingDeer has introduced us to a whole new world outside of traditional agriculture, deer hunting and soil health!  I am learning about the relationship between hunting and soil health. Just like most things, you need to take it back to the source. How did this deer get into this place and...Read More

The Total Nutrient Digest (TND) analysis accounts for all minerals from sand, silt, clay and organic minerals in the soil. This total represents the plant available and non-available mineral nutrients. The textbook definition of a soil is that there is about 45% mineral content.  Therefore, about 750 tons of all different minerals. The TND analysis...Read More

Being aware of the potential risks of heavy metals in soils is important. In Omaha, 125 years of lead smelting at the American Smelting and Refining Company (ASARCO) resulted in elevated soil lead concentrations (around 400 ppm) near residential housing. Furthermore, a study conducted on an urban garden soil near a railroad station in Lincoln...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

Available Water Holding Capacity (AWC) of soil is the amount of water held in the soil for crop growth and yield. Field capacity is the amount of water a soil will hold against gravity at a water tension of 1/3 atmosphere. Permanent wilting point is the point where plants cannot obtain more water and remain...Read More

The Role of BacteriaFeeding soil microbes includes feeding fungi and bacteria present within the soil. Bacteria are single-celled organisms that are generally 4/100,000 of an inch wide and long. A teaspoon of healthy soil can contain between 100 million and 1 billion bacteria. Because of their abundance, bacteria play important roles in the way soil...Read More

I’d be willing to wager that if you are reading this blog, you’ve probably submitted either soil, water, feed, or another of the numerous things we test, to Ward Laboratories, INC.  Then, once you’ve received your results you’ve probably called in and been able to talk to either Dr. Nick, or Dr. Ray and had...Read More

Reprint From June 2003 Ward Letter. Ward Laboratories professionals often get questions about surface urea application and UAN solutions. Urea is a dry fertilizer that dissolves with water after application creating urease enzyme activity that is naturally present in all soils at some level. Urease enzyme converts urea to ammonia (NH3) and bicarbonate (HCO3) in...Read More