COLLEGE OF AGRICULTURE

The growth regulators used in the experiment have different characteristics. ROOTS®, PGR4 and MZ63 are growth promoters.. They directly stimulate the tiller development, leaf enlargement and high clipping yield~ ROOTS® is more powerful than PGR4 and MZ63 in stimulating growth of grasses... BAYLATON, BANNER are growth - retarders.. They retard the cell enlargement, make leaves fine and short.. But they make leaf color dark even under the low fertilization, have high turf density and hi9h ~esistibi1ity to disease, insects and drought.. Their regulative mechanisms and function arc being studied. CYTOZY}~ did not have any effect ~ growth and appearance of grasses.

Blacksburg. Virginia 24061.0404 DEPARTMENT OF CROP AND SOIL ENVIRONMENTAL SCIENCES FACSIMILE (703) 23L.343L BIOASSAY OF GROWTH STIMULATOS BY JIYU JAN FOR DRS. R - E - SCHMIDT AND D - C - MARTENS DEPT. OF CROP AND SOIL ENVIROKMENTAL SCIENCES VIRGINIA POLYTECHNIC INSTITUTE AND STATE UNIVERSITY CONCLUSION (Page 7) The growth regulators used in the experiment have different characteristics. ROOTS®, PGR4 and MZ63 are growth promoters.. They directly stimulate the tiller development, leaf enlargement and high clipping yield~ ROOTS® is more powerful than PGR4 and MZ63 in stimulating growth of grasses... BAYLATON, BANNER are growth - retarders.. They retard the cell enlargement, make leaves fine and short.. But they make leaf color dark even under the low fertilization, have high turf density and hi9h ~esistibi1ity to disease, insects and drought.. Their regulative mechanisms and function arc being studied. CYTOZY}~ did not have any effect ~ growth and appearance of grasses.