EFFECT OF GIBBERELLIC ACID 

 AND 2, 4-DICHL0R0PHEN0XY ACETIC ACID ON 

 WATERHYACINTH, EICHHORNIA CRASSIPES (MART.) SOL MS 



BY 

 JOSEPH CLARENCE JOYCE 



A DISSERTATION PRESENTED TO THE GRADUATE COUNCIL 

 OF THE UNIVERSITY OF FLORIDA IN 

 PARTIAL FULFILLMENT OF THE REQUIREMENTS 

 FOR THE DEGREE OF DOCTOR OF PHILOSOPHY 



UNIVERSITY OF FLORIDA 

 1982 



