Effects of microarthropod exclusion and water amendments on fluffgrass rhizosphere total soil nitrogen at the Jornada Basin, 1986-1987

This data package contains data on soil nitrogen content in the
rhizosphere of fluff grass (Dasyochloa pulchella) plants collected
from 1986-1987 at the Jornada Basin LTER site. The purpose of this
study was to test how watering, and changing densities of soil
microarthropods and nematodes, results in changes in fluff grass
rhizosphere total nitrogen. Twenty 6 x 6 m plots were established with
a 3 m buffer between plots. Five plots were randomly assigned to one
of four treatments: 1) Chlordane to exclude microarthropods, 2)
Chlordane and water, 3) Water, and 4) Control. Every three months from
June 1986 to January 1987, randomly selected fluff grass plants were
harvested from each plot and rhizosphere soil samples were collected
for total nitrogen digestion analysis. This data set consists of
sampling date, treatment, subsample number, and total nitrogen
(mg/kg). This study was completed in January 1987.