1920] 
DUGGAR—H-ION CONCENTRATION AND NUTRIENT SOLUTIONS 13 
TABLE II 
(Series 1, Corn) 
SALT REQUIREMENTS AND H-ION a eerie IN RELATION TO GROWTH: 
SOLUTIONS A AND 
Total | Gr. wt. | Total | Greatest Pu 
No. Culture gr. wt. | of roots | dry wt. | length 
indices | (gms.) | (gms. | (gms) | (cm) | Initial [After gr. 
1 AcO 9.84 2.91 0.5452 22.02 4.0 5.4 
2 Ac /5 9.94 2.74 0.6139 22.64 5.6 5.6 
3 Ac /10 10.71 2.43 0.7642 22.97 5.9 5.9 
4 Ac /15 7.90 | 2.25 20.36 |6.1 6.0 
5 AcNa 7.92 | 2.56 | 0.4652 14.49 |4.0 5.2 
6 BcO 14.35 4.22 1.0198 25.79 40 5.0 
7 Bc /5 13.12 2.10 0.8102 26.28 8.4 8.0 
8 Be /10 16.90 3.95 1.0271 29.24 9.0(4-) 8.4 
9 Bc 5/ 5.28 1.17 0.4606 14.67 4.6 4.0 
10 Be 10/ 3.43 0.70 0.5387 10.54 3.2 4.0 
11 Be 20/ 3.32 0.41 0.5617 8.42 3.0(—) 4.0 
12 BcK5/10 17.75 3.94 1.0170 31.84 6.2 9.2 
13 BcK»/20 19.22 4.51 1.1881 30.09 6.2 6.6 
TABLE III 
(Series 1, Peas) 
SALT REQUIREMENTS AND H-ION pc redes IN RELATION TO GROWTH; 
SOLUTIONS A AND 
Total | Gr. wt. Total Greatest p 
No. Culture gr. wt. | of roots | dry wt. length Initial Pa 
indices (gms.) | (gms.) (gms.) (emn.) of sol. 
1 ApO 19.47 6.44 1.1014 27.84 4.0 
2 Ap /5 17.97 5.81 0.9368 27.92 5.6 
3 Ap /10 Al 5.91 1.0155 29.42 5.9 
4 Ap /15 veel) 5.42 1.0140 26.76 6.1 
5 ApNa 14.77 5.57 0.8786 25.60 4.0 
6 BpO 15.72 | 5.76 0.9200 25.10 7.0 
7 Bp /5 15.86 5.10 0.8559 27.40 8.4 
8 Bp /10 14.10 4.56 0.7822 25.59 9.0(4-) 
9 |Bp5/ 8.27 | 2.70 | 0.6558 | 15.83 4.6 
10 Bp 10/ 5.85 1.78 0.5184 12.98 2.2 
11 Bp 20/ 3.47 0.93 0.3770 7.59 3.0(—) 
12 BpK;/10 17.69 5.17 0.9770 29.19 6.2 
18 BpK,/20 15.39 4.79 0.8660 27.18 6.2 
