Current information is based largely on results from mixed stands.
A field experiment was established in 1986, and from 1988 to 1991 treatments were applied with burning in March, April, or May plus an unburned control. Treatments were applied to the same plots annually and were arranged in a split-split plot, randomized complete block design. The main plot was species, subplot was burn date, and sub-subplot was harvest frequency. In 1989, plots harvested three times produced yields similar to plots harvested once for all species. Yield response of species also varied across the study.