Notes:

1990

May 1 to June 22 : plot construction.

June 20: fertilized all plots.

June 23: plots Bromo-gassed.

June 27: planted seeds in all plots.

September 6 to October 21: percent cover and number of each species was recorded from each plot.

1991

May 8 : planted seeds in all plots of E105.

June 10 to June 14 : 9 soil cores per plot were taken and dried to be analyzed later for pH and total N.

June 17 to June 21: Vegetation survey. The percent cover of each species was recorded in each plot.

July 15 to July 17: 4 root cores were taken from each plot and combined. The combined soil samples were washed to isolate root biomass. Roots were dried in a drying oven and then weighed the following week.

July 22 to July 25: Vegetation survey.

August 19 to August 23: Three above- and below-canopy light meter readings were taken from each plot. The number and species of flowers were recorded in each plot.

August 24-29: Vegetation survey.

Gophers were trapped thoughout the season although only one was captured.

1992

May 17: fertilized all plots.

May 22: planted seeds in all plots of E105.

June 15 to June 23: vegetation survey.

June 24 to June 26: Three above- and below-canopy light meter readings were taken and the number and species of flowers were recorded in each plot.

June 30 - July 9: soil samples taken from plots to determine ammonium/nitrate composition.

July 6 to July 9: more soil samples.

July 13: more soil samples.

July 15: soil sampling ends.

July 20 to July 27: vegetation survey.

July 28 to July 29: light meter and flower records.

August 17 to August 21: 4 root cores were taken from each plot and combined. The combined soil samples were washed to isolate root biomass. Roots were dried in a drying oven and then weighed the following week.

August 24 to August 31: vegetation survey.

August 31: deflorated little blue-stem in aisles.

September 1 to September 3: light meter and flower records.

September 10: drought treatment ends.

Gophers were trapped thoughout the season although only one was captured.


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