The plots in experiment B037 are enclosed by a fence to exclude mammalian herbivores. Galvanized welded wire hardware cloth with 6mm x 6mm openings was buried to a depth of 84cm. Additional hardware cloth extends 60cm above the ground, and poultry netting extends to 1.8m above the ground. Roots from each plot are prevented from going to the surrounding plots by using galvanized sheet metal (gauge 26, 12 inches deep into the ground) to enclose each plot.
Mammal Trapping
Small mammals are trapped as often as possible to keep the resident population low. Pocket gophers are trapped out of the field as soon as they appear.
Weed wacking, raking and Roundup
Weed wacking (using a weed whip) at different heights, raking (to get rid of litter) and the killing of vegetation by the use of Roundup are applied to different plots according to their treatments. For a list of treatments for each plot, see file trmte37.
Additional Notes
On May 5, 1995, a wildfire burned all of the plots in experiment 37 in Field B.