35(5 University of California Fiibtication.s in Agricultural Sciences [Vol. 1 



general eorrespoiuleil to vegetative vigor, the plant exhibiting 

 maximum vegetative growth producing the largest number of 

 flowers. Here again the influence of the total concentration of 

 the solution was apparent in the flower yield in the various 

 groups, which increased as the concentration decreased. 



Cm. 



1(1(1 



90 



80 - 



70 - 



4 



?,0 



20 



10 - 



.00 



.1 •/c Ca(HoP04)i 



Fig. 5. — Graph showing the influence npou height of equal quantities 

 of Ca(H,P04)2 in the diflferent groups of series II. 



PHYSIOLOGICAL EFFECT OF PHOSPHORUS 

 Distribution of Salts in Series II 

 In series II a study was made of the influence of phosphorus 

 added as Ca(H2P04)o. This salt was present in the same quan- 

 tity in all groups A, B, C, and D, the quantity in each of the pots 

 1 to 5 being 0.02 g. (.001 per cent), 0.1 g. (.005 per cent), 

 0.2 g. (.01 per cent), 1.0 g. (.05 per cent), 2.0 g. (.1 per cent), 



