No. 



3 



4 



S 



6 



7 



S 

 Q 



TABLE TI 



Effect of various organir rnmpniinds upon the growth of wheat plaiits (ppm = parts per iiuUion). 



^— y^ 





_ .^.jw-u u7>^K«'r^-»--^*14' ■■IT'-"-^ 



Compound 



-<L-ihJ -Tr" ■■^- ^-V 



Glycoroil 



ch;(NH.)cooh 



A Ian in 



{ 11, .CH(Nn.)-CO(JU 



T.L'ucin 



CH, .iLii.), •CIIiNII,) .COOH 

 T\T<tsin 



^CH, •CH(NH.)-COOrT 



Aspartic acid 



HOOr . CHa • CH(NTT.) ■ COO IF 



Asparagin 



Niror . cHa • riTiNHa) • coon 



c^n 



4 



CH : CH 



Nc'urin 



(CH3)3n/ 



Nciuiii (luturalized) 



Cholin 



^CHa'CH.OH 



U uration 



of cxjicri' 



men I in 

 days 



10 



9 



It 



10 



8 



10 



Lowest con 



cenlriifkin 



taiising 



dcuth 



500 ppni 



250 ppm 



350 ppm 



Luwcst <:on 



centration 



causing 



injur J' 





500 ppm 



10 ppm 



100 ppm 



25 ppm 



25 V?^ 

 500 ppm 



Coiutntra- 

 tion causing 



greatest 



sliinulalion 



25 ppm 



I ppm 



Remarks 



Tops of all j)lants good, iiuots 

 st'tly iaj'd at higher conc'lions. 



Only the roots were injured by 

 concunlratloii of 500 ppm. 



No injurious action. 



Normal growth in concentrations 

 below 100 ppm. 



No injury in concentrations below 

 1000 ppm. 



Roots were injured more than the 

 lops. 



4» 



O 



N 





