Laserfiche WebLink
maintenance in the soil or plant growth medium. An effort was made to balance the <br />• composition of the mix in favor of native species while still maximizing the potential for <br />effectiveness. <br />Table 22-6 lists annual grains which will be used for cover cropping in reclaimed areas, <br />or as vegetative stabilization for areas needing protection for approximately one year or <br />less. Barley, oats, winter wheat, or Regreen will be used depending on the season in <br />which seeding will be done. Cover cropping may be done alone (at times other than the <br />normal fall planting period) or simultaneously with fall planting. Competition with <br />perennial species will not be a problem because of the relatively low seeding rates used <br />(normal crop production seeding rates for annual grains are 50 to 60 pounds per acre) end <br />the annual rainfall received at the Seneca Mine. The use of an annual grain will also <br />compliment the permanent mix. within the permanent mix are species that have different <br />rates of establishment and longevity. As an example, slender wheatgrass is one of the <br />earliest establishing perennial grasses, but is not as long-lived as later establishing <br />perennial species. The annual grains es tabLish faster then the perennial species, <br />including slender wheatgrass, and help to develop en effective cover mare rapidly. <br />Establishing perennial species will have replaced most or all annual grains by the next <br />• growing season. This is supported by annual observations of seeded areas at the Seneca II <br />Mine. Time of seeding will determine which species is used. winter wheat seeded in the <br />late spring or barley or oats seeded in the summer or early fall will generally fail to <br />mature a grain crop, and thus reduce volunteering. Regreen is a sterile hybrid and will <br />not volunteer. Cover crops have been used effectively for a number of years at the Seneca <br />11 Mine. <br />TARLE 22-6 <br />Cover Crop Species <br />(only one species will be selected from this list <br />for annual cover cropping needs) <br />Drill Rate <br />P.L.S. <br />Species lbs/Acre <br />1. Hordeum vulgare Sixrow barley 10-20 <br />2. Triticum aestivum winter wheat 10-20 <br />3. Avene setiva Oats 10-20 <br />• 4. AaroovronxTriticum Regreen 10-20 <br />~R roadcast rate is double the drill seeding rate <br />P.L.S. = Pure Live Seed <br />77 <br />