Manure from Cattle Given Antibiotics Affects Soil Microbiome and Nutrient Cycling

A study led by Colorado State University and the University of Idaho found multiple effects on soils caused by applying manure from cows that were administered antibiotics, including alteration of the soil microbiome and ecosystem functions, soil respiration, and elemental cycling. Addition of antibiotics in manure caused a decrease in carbon-use efficiency, resulting in less carbon stored in the soil. The study’s lead author, Carl Wepking, noted that given the study’s findings, people may want to consider the effects of antibiotics in the soil when using manure as fertilizer.