The prehistoric-looking alligator snapping turtle may be the largest freshwater turtle in North America, but that doesn't make it easy to spot.
Frequent freezing and thawing helps farmers overseed weakened pastures with natural fluctuations in soil helping work broadcast seed into thinned grass stands.
"It's no-till help," University of Missouri Extension forage specialist Craig Roberts said.
Deciding when and how much nitrogen fertilizer to apply is a perennial challenge for corn farmers.
Like most plants, soybeans pair up with soil fungi in a symbiotic mycorrhizal relationship.
The U.S. Midwest produces at least a third of the world's corn and soybean supply each year, and feeding the world requires a lot of fertilizer, mostly in the form of nitrogen and phosphorus.