98 TRANSACTIONS OF THE 
TABLE II. 
Crop production for soils containing different 
amounts of sodium carbonate compared with different 
tests for the salt. 
or] © ie) 2 rc) S oe 8 i) 
Soll PF low | PS= | owl Plow] 38) ow 
BS) PE lee | PSS | SelPee| ce ees) os 
+3 : : ° t 09 - wa t 
g |) ee |e [Pee | Teese [ess| F 
gts fas) ny = sy - r| 3B 
| | | | | 
100 | 0 51 728 | 62 || 705 67 76 | 55 
126 | 500 | 64 | 849 70 | TAT 74 75 66 
iba 1000 48 959 | 54 710 59 eT 50 
83 2000 | 21+) 1170 28 || 886 37 .83 24 
65 || 3000 | 29 | 1710 ; 33 || 1104 35 .89 30 
37 || 4000 75 || 2068 | 76 1392 78 1.05 76 
21 || 5000 92 2555 93 1925 95 1.18 94 
14 || 6000 {| 102 8024 | 108 2298 | 104 1.30 | 104 
8 7000 | 152 || 3395 | 153 2695 | 153 || 1.46 | 153 
5 || 8000 | 238 || 3944 | 241 3208 | 239 | 1.69 | 239 
4 || 9000 | 130 | 4527 | 131 3555 | 132 | Leal) eZ 
3 | 10000 | 280 || 4910 | 280 | 3900 | 281 | 191 | 281 
| | II 
TABLE III. 
Crop production for soils containing different 
amounts of sodium sulfate compared with different tests 
for the salt. 
2 uo] e, S | uo} 5 3 & Re 8 oft SS 
a0] 2 | ot Fer] owl FPP evi Bel ot 
Fei tb | RU rpee | Biter | PL /Oee!| Be 
oP ge |e lee ale eee |e ees) ee 
ee ~ . rs) iS) “Srg| 
= Re |B Gees =} | 5 
| | | | | 
100 a 51 455.| 68 || 6874] 59 || 81 | St 
111 || 500! 46 || 864] 50 {|| 978| 50 || .41 | 70 
94 || 1000 | 42 || 1418] 48 || 1850 | 44 || .45] 51 
91 || 2000 | 42 || 2474 | 45 || 2098 | 47 || .57 | 46 
79 || 3000 | 46 || 3579 | 48 || 2616 | 48 || .72| 49 
68 || 4000 | 50 || 4600 | 52 || 323 54 || .87 | 55 
55 || 5000} 59 || 5570 | 61 } 3950 | 61 || 1.04 | 62 
42 || 6000 | 72 || 6798 | 73 || 4662 | 75 || 1.14] 75 
36 || 7000 | 95 || 8099/ 96 || 4998} 96 || 119 | 97 
28 8000 | 99 || 9560 | 100 |] 5496 | 100 || 1.28 | 100 
- | 9000 | 115 |} 9990 | 116 |} 6345 | 116 || 1.30 | 115 
16 | 10000 | 125 |! 10810 | 125 | 6850 | 127 || 1.46 | 126 
| 
