University of Minnesota
University of Minnesota
College of Biological Sciences


Experiment 024 - The Effect of Nitrogen Addition and Different pH Levels on Microorganism Populations

The purpose of this experiment was to measure the effect of NH4NO3 addition and different levels of pH on microorganism populations. The experiment was located in field B. This experiment was laid out as a full factorial design with 3 nitrogen levels and 4 pH levels. The pH levels strived for are 4.0, 5.5, 6.5, and controls. The nitrogen levels are E, G, and I are defined in fertilization details. The experiment had 4 replicates. The treatments were randomly assigned to the 48 plots. The plots were 4 by 4 meters and were laid out in a 6 by 8 grid.

On May 5, 1995, a wildfire burned all of the plots in experiment 24 in field B.

Methods for e024


Dataset IDTitleRange of Years (# years with data)
lpe024Percent light penetration1987-1990 (3 years)
ple024Plant aboveground biomass data1987-1989 (2 years)
nhe024Soil ammonium1987-1987 (1 year)
noe024Soil nitrate1987-1987 (1 year)
phe024Soil pH1987-1991 (3 years)