Leaf collection: phosphorus and nitrogen results, by season

Graph showing total nitrogen and phosphorus yields, by season, for a leaf collection and street cleaning study

Detailed Description

Seasonal contribution to annual yields of total phosphorus and total nitrogen (winter excluded) in the control and test catchments during the treatment phase (2015) of a leaf removal and street cleaning study in Madison, Wis.


Image Dimensions: 1800 x 750

Location Taken: US