Did You Know?

Many legal definitions, including Connecticut's, of what constitutes a wetland are based on the presence of hydric soils. Hydric soils can be identified by the "mottles" or small pockets of grayish-blue soil near the surface. These pockets are caused by changes in the chemical forms of iron and magnesium in the soil. These colorful soil patterns are now called redoximorphic features and are formed under saturated conditions within the soil. Redoximorphic features are used to estimate the depth to seasonal high water table.

Welcome to UConn's Soil Nutrient Analysis Laboratory

QuoteOF The Day
" The nation that destroys its soil destroys itself. " – Franklin D. Roosevelt

The University of Connecticut Soil Nutrient Analysis Laboratory (SNAL) has been serving the farmers, greenhouse growers and residents of Connecticut for over 50 years. Currently, it is directed by Dr. Thomas Morris and managed by Dawn Pettinelli; Deborah Tyser is our full-time laboratory technician.

Our Goals
The Soil Nutrient Analysis Laboratory has three major objectives. First is to provide an inexpensive means for both agricultural producers and home owners to test their soil fertility and receive environmentally sound limestone and fertilizer recommendations. The second major focus of the Laboratory is education. Through our analyses as well as outreach efforts, clients and the public are being informed about wise soil management and fertility practices. The Laboratory also analyses research samples for University faculty and graduate students and serves as a teaching laboratory for several Department of Plant Science classes.

Soil Analysis
The laboratory processes about 14,000 soil samples annually. Samples are routinely tested for a variety of major and minor plant nutrients, lead and pH. Limestone and fertilizer recommendations are based on University research and field studies. Plants grown under optimum soil pH and fertility levels typically are healthier and more vigorous. Applications of limestone or fertilizer in inadequate or excessive amounts, wastes both time and money, can cause plants to perform poorly and, in the case of excessive fertilizer use, can negatively impact our surface and ground water supplies.

Nitrogen Testing
In addition to routine soil fertility testing, the SNAL also offers commercial agronomic and commercial vegetable growers the Pre-sidedress Soil Nitrate Test (PSNT). From June 1st through August 15th, soil samples are analyzed for nitrate-nitrogen on a 24 hour turnover. As a companion to the PSNT, our laboratory performs the End-of-Season Cornstalk Nitrate Test after harvest.

Green House Media
Saturated Media Extract (SME) is available to growers using soil-less potting media.


Plant Analysis
Click here to learn about our plant tissue analysis services.

Soil Nutrient Analysis Laboratory 6 Sherman Place, U-5102
University of Connecticut, Storrs, CT 06269-5102
phone: 860-486-4274
fax: 860-486-4562
email: soiltest@uconn.edu