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A III IIIIII III IIII III <br />- 999 <br />+ UNITED STATES DEPARTMENT OF AGRICULTURE <br />SOIL CONSERVATION SERVICE <br />Monte Vista Field Office, P:0. Box 390, Monte Vista, CO 81144 <br />May 13, 1980 <br />SUBJECT: Gravel Pit Revegetation <br />Douglas O'Bannon Farm <br />T0: Jeff Rehberg <br />I have checked the gravel pit site located west of Del Norte, CO on the <br />Douglas O'Bannon farm. <br />Plants on site and in the vicinity include: rabbitbrush, western wheatgrass, <br />blue grama,'littleseed ricegrass, sleepygrass, needle-and-thread, squirrel- <br />tail, yucca, prickly-pear, and juniper along the western edge of the gravel <br />pit. These make up the majority of the existing plant community. <br />Recommendations for planting on disturbed areas at this site are as follows: <br />Russian Wildrye - Vinall Variety 10 lbs. per acre PLS* <br />Western Wheatgrass - Arriba or Barton Variety 16 lbs. per acre PLS* <br />Intermediate Wheatgrass - Amur Variety 10 lbs. per acre PLS* <br />* PLS = Pure Live Seed <br />The seeding rates are amounts of pure live seed if species is planted alone. <br />If you mix these and want equal amounts of each species then use about 1/3 <br />of each seeding rate in the mix. If the seed is broadcast rather than drilled, <br />use twice the recommended rates. A firm seedbed should be prepared for seeding. <br />Due to the low precipitation in the area (about 12 inches per year) you need <br />to use the drought resistant species. This is the reason I have recommended <br />these grass species and I also believe that the seed is available from <br />commercial sources. <br />A one time fertilization of 18-46-0 in the seedbed would be beneficial to get <br />the seeding started. This should be applied at a rate of 300 lbs. per acre. <br />If barnyard manure is available for use, it would make an excellent additive <br />to the seedbed for holding moisture and improving fertility and tilth. <br />I would also recommend that the topsoil be saved for use on side slopes when <br />your project has been completed. Side slopes should not be steeper than 3 to 1. <br />This seeding can be done in the late fall just prior to snowfall. If the <br />seeding is done in spring you may lose seed due to strong winds. Mulching <br />should be considered for a spring time seeding. <br />• o <br />