Laserfiche WebLink
i' <br />' 103 <br />~~ 3. Subplots seeded with the mixture composed of both introduced <br />and native species responded with the highest biomass. <br />4. Subplots seeded with the introduced seed mixture allowed the <br />greatest amount of invasion. This indicates that the intro- <br />duced seed mixture was unable to form a closed comanunity and <br />thus was open to invasion. <br />5. Phosphorus fertilization had little effect on plant <br />establishment. <br />Germination and Establishment Studies <br />Results <br />An extensive review of literature has been completed for Colorado <br />native shrubs and submitted to the U.S. Forest Service for publication. <br />• This publication represents the first of three volumes addressing the <br />+,~ areas of basic range seed physiology and the germination characteristics <br />i~ of native or wild plants. Volumes 2 and 3 are still in progress and will <br />be finalized in the fall of 1979. Each volume will be useful for the <br />development of specific guidelines for the propagation of Colorado plants <br />by seed. <br />Growth chamber studies were initiated in January 1979. After just <br /> two months of study several significant findings can be reported for <br />}}~~ <br />iil green needlegrass (Stipa viridzzla), Utah sweetvetch, and green ephedra <br /> (ibixedm viridis). Each species is presently being tested in various <br /> seed mixtures at the Intensive Study Site. However, germination and <br /> emergence responses have not been consistently high. Green needlegrass <br /> is a cool-season species and should respond to favor able moisture <br />