Evaluation of Agricultural Best-Management Practices in the Conestoga RiverHeadwaters, Pennsylvania: Effects of Nutrient Management on Quality of Surface Runoff and Ground Water at a Small Carbonate-Rock Site Near Ephrata, Pennsylvania, 1984-90. Water-Qua

摘要

This report describes research conducted at Field-Site 2, which was located inthe Conestoga Headwaters Basin immediately north of Ephrata in Lancaster County, Pa. The primary objective of this report is to compare land-use and water-quality data from the period before nutrient-management practices were implemented (pre-BMP period--water years 1985-86, October 1, 1984, through September 30, 1986), with data from the period after implementation of nutrient-management practices (post-BMP period--water years 1987-90, October 1, 1986, through September 30, 1990) to determine the effects of nutrient management on water quality. A second objective of this report is to evaluate the movement of nitrogen at the site.