45 



Table 1-2. Analysis of variance of the effects of GA 3 and 2,4-D on 

 waterhyacinths utilizing general linear models procedures 

 (percent change in number as the dependent variable). 



Sources of variation 



d.f 



s.s. 



m.s. 



F 





TREATMENT 



19 



8125895.2 



427678.7 



32.59 



** 



GA3 



4 



317602.8 



79400.7 



6.05 



** 



Linear 



1 



222983.1 



222983.1 



16.99 



** 



Quadratic 



1 



17977.1 



17977.1 



1.37 



N.S, 



Other 



2 



76642.6 



38321.3 



2.92 



N.S, 



2,4-D 



3 



7680433.9 



2560144.6 



195.10 



** 



Linear 



1 



6210423.2 



6210423.2 



473.27 



** 



Quadratic 



1 



1390888.5 



1390888.5 



106.00 



** 



Residual 



1 



79122.2 



79122.2 



6.03 



* 



Interaction (GA x 2,4-D) 



12 



12785.5 



10654.9 



0.81 



N.S, 



Linear x Linear 



1 



13380.1 



13380.1 



1.02 



N.S, 



ERROR 



196 



1108430.3 



5655.3 







Trial (Treatments) 



52 



682368.0 



13122.5 



4.44 



** 



Reps. (Trials x Treatments) 



144 



426062.3 



2958.8 







TOTAL (Corrected) 



215 



9234325.5 









** 

 * 



Significant at 0.01 

 Significant at 0.05 

 S. Not significant 



