Soil is teaming with life. Billions of bacteria and miles of fungal filaments act as micronutrient stores and miniature highway transport systems that help a soil function to support a healthy plant community. Measuring a soil’s biological system, however, is complex and very different from the more traditional soil testing methods aimed at a soil’s fertility. Tests such as Solvita, Haney, and PLFA help producers evaluate their soil’s biological system and we are now beginning to understand and appreciate what this means for the health and function of our soils. Lance Gunderson, the executive director of soil health and new test development at Ward Laboratories in Kearney, Neb., will introduce these tests, their components and how to interpret the results, along with discussing how on-farm management may influence the soil’s biology and overall health.

Faced with farming highly erodible hill ground and a strong desire to improve soil life, John and Dianne Kemmeren began no-tilling on their Bainbridge, N.Y., dairy farm 40 years ago. John explains the challenges they face, how they handle manure from their 200-head dairy herd and how they manage a 3-year rotation of hay, corn and cover crops to keep the soil covered 365 days a year. John also shares how healthy, high organic-matter soils have allowed them to cut fertilizer inputs by 75% while increasing yield, and reviews their double-cropping trial results, the growth of grazing corn, interseeding legumes into sudangrass and the use of Italian ryegrass as a nurse crop.

Thanks to centuries of erosion and tillage, annual dry periods during the growing season, equipment pressure and traffic, the soils in the Piedmont region of North Carolina are thin from abuse. But Jim Howard and his son, Branson, are working to turn that around on their 450-acre no-till corn, wheat and double-cropped soybean operation. Aiming to be a good steward of the land while increasing yields, limiting risk and maintaining profits, Howard shares how multiple crop rotations, cover crops, soil testing, variety selection and a limited equipment lineup are keys to his no-till operation. He also shares the knowledge he’s gained from working with successful farmers during his 30-plus years in agricultural sales.

The rolling hills and bottomlands of southeastern Iowa are anything but simple to farm, leaving Steve Berger and his father, Dennis, with the challenge of saving their soil while building it up. Through 36 years of no-till, the Bergers have gained a lot of knowledge on how to manage residue within crop production to develop a highly functioning microbial system. The Wellman, Iowa, no-tiller explains the use of cover crops like cereal rye in a corn-soybean rotation and how they utilize hog manure effectively from their farrow-to-finish swine operation — all with the aim of leaving soils better than when the Bergers started farming them.

No-till systems have been promoted as a valuable tool to increase soil organic carbon (SOC) sequestration and reduce soil erosion vs. intensive tillage systems. While numerous approaches to estimate the amounts and rates of SOC sequestration in no-till have been published, Ken Olson says questions abound on the protocol for assessing rates.

Several new tools are available today that can help no-tillers get a better handle on the amount of soil biological activity and adjustments that can be made to their fertility program. Dan Towery, no-till consultant with Ag Conservation Solutions, and Hans Kok, certified crop advisor, will provide details on the workings of several popular tests — the Cornell soil health test, the Solvita test and the PLFA soil test.