Oak Underplanting Success Program


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How to use OAKUS

To use OAKUS, you will need the following information:

  • Site index – your forester or county soil survey can provide this information. For OAKUS, acceptable values are 52 to 79 ft. This is the range of site indices in which the study was conducted.
  • Initial stem caliper of the seedlings you will be planting. Acceptable values are 0.15 to 1.0 in. This is the range of calipers in which the study was conducted.
  • Competition Control: two herbicide treatments, one treatment, or no treatment.
  • Percent stocking – the residual stocking left when the shelterwood was created.
  • Shoots – whether or not you will top clip the seedlings prior to planting. Top clipping gives the trees a slightly higher probability of success.
  • Target Trees Per Acre – the number of successful trees you would like to have by year 11. A successful tree is one that survives and attains at least 80 percent of the height of dominant competitors.

Just enter this information using the slider bars or drop-down menus in OAKUS. Your stand and management specific information will be show up in the Results section.

Using the Sliders

To change the site index, initial stem caliper or number of trees, click your mouse on the slider box, and move it left to decrease, or right to increase.Site Index Slider

Start using OAKUS

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