Laserfiche WebLink
27 <br />• Biomass data collected in the 1979 growing season is not consistent <br />with the cover data and other characterizers of the vegetation. It <br />is believed that the sample size for biomass data collection must be <br />increased in order to minimize the variance encountered in the treatments <br />sampled. <br />Species Evaluation Plot <br />The purpose of this plot is to identify the best grasses, forbs, and <br />shrubs adapted to the waste material at this site. Many species not <br />appearing in the `fain Plot seed mixture are seeded 'here to permit the <br />investigation of a wider selection of plant materials. Because of the <br />nature of the plot, the plants are subject -only to intraspecific competi- <br />species seeded together have very similar moisture and nutrition require- <br />ments. A complete test of a species' success will require the interspeci- <br />fic competition of growing in a mixture of species. Table S contains the <br />species rated good to excellent in vigor and survival. <br />Slope Plots <br />The most obvious difference between the two sets of slope plots was <br />the lack of vegetation on the steeper 1.5:1 plot. The 3:1 plots support <br />a much more vigorous growth of seeded species. Examination of the steeper <br />1.5:1 slope plot has shown that the absence of vegetation appears to be <br />the result of erosion beneath the mulching materials and also the higher <br />heat load the steeper slope accumulates. The slack material beneath the <br />. mulch is extremely erodible when placed at a grade this acute. The 1.5:1 <br />tion <br />for moisture <br />and nutrients. Intraspecific competition is <br />often <br />• <br />more <br />severe than <br />interspecific competition, because plants of <br />the same <br />species seeded together have very similar moisture and nutrition require- <br />ments. A complete test of a species' success will require the interspeci- <br />fic competition of growing in a mixture of species. Table S contains the <br />species rated good to excellent in vigor and survival. <br />Slope Plots <br />The most obvious difference between the two sets of slope plots was <br />the lack of vegetation on the steeper 1.5:1 plot. The 3:1 plots support <br />a much more vigorous growth of seeded species. Examination of the steeper <br />1.5:1 slope plot has shown that the absence of vegetation appears to be <br />the result of erosion beneath the mulching materials and also the higher <br />heat load the steeper slope accumulates. The slack material beneath the <br />. mulch is extremely erodible when placed at a grade this acute. The 1.5:1 <br />