Sludges as effective as synthetic fertilizer

Ona, Florida

In crop trials at the University of Florida's Range Cattle Research Center, Martin Adjei and Jack Rechcigl compared effects of different kinds of sewage sludge with commonly used synthetic nitrogen fertilizer on forage crops. Evaluations were done for yield, protein and mineral content, digestibility as well as accumulation of heavy metals and nutrients in crops, groundwater and soil. According to a summary report in Resource, their study …