Category: Agriculture

It’s been 33 years since an Iowa State University agronomist named Fred Blackmer thought he’d struck gold for Midwestern corn farmers. Using a fairly simple three-step method, Blackmer developed an analytical tool that could accurately tell farmers exactly how much fertilizer their fields needed to produce abundant harvests each season. The analytics Blackmer perfected showed not only how much fertilizer the corn crops would need to meet production targets, but also exposed how much could …

IOWA CITY, IOWA  — There’s no mystery that fertilizer and manure running off farm fields are the primary cause of Iowa’s wretched water quality. Farm fields laden with synthetic fertilizers and manure produce bounties of over 2 billion bushels of corn each year. Data from the Iowa Water Quality Information System, the state’s advanced monitoring network, shows those same fields also produce a torrent of run-off that contaminates virtually every mile of streams and rivers …

For decades, Americans mostly turned a blind eye to the industrial-scale livestock production operations that churn out cheap supplies of meat and dairy for the masses. Occasional opposition to local pollution problems and the casual animal cruelty that characterize conventional US dairy, hog, and poultry production did little to alter practices that are embedded in the rural landscape. That may be changing. A wave of frontline resistance is now breaking across the Upper Midwest and …

In 2016, the U.S. Environmental Protection Agency identified phosphorus and nitrogen discharges from U.S. farmland as the single greatest challenge to our nation’s water quality.  That assessment followed years of confirming high concentrations of farm nutrients in surface and groundwater reserves, and dozens of peer-reviewed epidemiology studies that cited both compounds as a threat to public health. The agency proposed to identify those responsible and develop strategies to reduce nutrient pollution.  That plan died the following year. …