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<br />• sandsage density, sandsage groxth, species diversity, total cover and <br />productivity. The lmt three of these measures refer to perennial herbaceous <br />species only. <br />D. 2.2. SandsaKe density <br />Sandsage density x111 be determined in year Y4 to estimate the need for <br />either transplanting or thinning treatments, and in Y9 and Y10 to measure <br />the degree of success. Sandsage x111 be counted im 15 to 20 plots, xhich <br />may be as small as 1/100th acre or as large as 1/10th acre, depending on <br />the density attained and/or the density approved as a success standard. <br />Our ob,~ective is to ad3ust plot size to attain a mean count of 10 or more <br />per plot xith not more than one zero count in the sample. Sandsage on <br />revegetated areas is a unique problem, first because xe have no x~y to <br />assure "successful" stands xithout resorting to the expensive procedure <br />• of transplanting, and secondly, overly dense stands are xorse than unauccesa- <br />fully thin stands. It xould be undesirable to leave local ranchers xith <br />an immediate need for chemical contml of sandsage. <br />D.2.3. SandsaRe Faroxth <br />Yhen measuring sandsage density, xe x111 also measure the height of the <br />first five sandsage encountered in each plot in years Y4 and Y9. M increase <br />in height from Y4 to Y9 is necessary to confirm groxth by this measure= <br />although xe suspect that a significant increase by group comparison T test, <br />even at a probability level of 80~, will not be easy to establish. Neves <br />theless, height increase is most likely an easier attribute than cover <br />increase. There is need to question the requirement for quantitative <br />measurement of shrub groxth, because it is a simple matter to see that plants <br />are growing--producing nex leaves and txigs. <br />1 <br />14 <br />