424 University of Califorma Puhlications in Afjricultural Sciences [Vol. 1 



TABLE XIV (h) 



Corn roots irrowii in (iistilled water with Cu(0H)o.CuC03 



Cu p. p.m. Elongation 48 hrs. Cu p. p.m. Elongation 48 hrs. 



check 27.6 mm. .05 5.7 mm. 



.01 1.8 .1 2.7 



No stimulation; eccentric results. 



TABLE XIV (0 



Bean roots grown in well water with Cu(OH)o.CuCOa 



Cu p. p.m. Elongation 48 hrs. Cu p. p.m. Elongation 48 hrs. 



check 2. mm. .1 6. mm. 



.05 6. .5 .8 



Showing stimulation at .05 to .1 p. p.m. 



TABLE XIV (j) 

 Bean roots grown in distilled water with Cu(0H)o.CuC03 



Cu p. p.m. I^longation 48 hvs. Cu p. p.m. Elongation 48 hrs. 



check ;-!. mm. .1 3.1 mm. 



.01 :;. .3 1.0 



.05 3.7 



Showing no stimulation. 



TABLE XIV (A) 



Squash roots grown in well water with Cu(OH).j.CuCO:, 



Cu p.p.m. Elongation 48 hrs. Cu p. p.m. Elongation 48 hrs. 



check 2.4 mm. .1 5.7 mm. 



.05 4.9 .5 .4 



Showing stimulation at .05 to .1 p.p.m. 



TABLE XIV (0 



Squash roots grown in distilled water with Cu(OH)o.CuC03 



Cu p.p.m. 

 check 

 .01 



Showing no stimulation. 



TABLE XIV (m) 



Bean roots grown in distilled water with CuSO, 



Cu p.p.m. Elongation 48 hrs. Height of tops 

 .1 2.9 mm. 87 mm. 



.3 1.2 91 



.5 .6 85 



Bean roots grown in distilled water with Cu(OH )o.CuCO.; 



Cu p.p.m. Elongation 48 hrs. Height of tops 



.1 2.9 mm. 98 mm. 



.3 1. 88 



.5 .6 84 



Showing .same behavior with CuSO^ and Cu(0H)j.CuC03. 



