Clipping Effects on Dry Matter Yields and Survival of Basin Wildrye

Abstract

Effects of frequency and height of clipping basin wildrye over a 4-year period on yield and plant survival in the fifth year were studied. Yield and survival were reduced with close and frequent clippings (6 vs 9 week frequencies and 15 vs 30 cm heights), but growth stage at the first clipping did not significantly reduce either yield or survival. We conclude that reduced yield and survival in response to the clipping treatments are due to a previously reported decline in plant vigor, which is related to levels of carbohydrate reserves.