Via Michelle Sutton (MS Horticullture ’00), Editor, Taking Root, the blog of the New York State Urban Forestry Council:
“Some contractors go overboard with adding fertilizers. This can result in extensive phosophorus application, whereas nitrogen should really be the focus when it comes to turf density in most sites,” she says.
The article also details research by horticulture PhD candidate Grant Thompson, who is comparing polycultures of turfgrass species with monocultures. “In the polycultures, we found some moderate increases in biomass and some moderate retention of nitrogen,” he says. He also found more diverse bacterial and fungal communities in the root zones of the polycultures.