304 
Journal of Agricultural Research 
Vol. XIV, No. 8 
Table VI .—Weight of oat crop and potash removed from soil —Continued 
Treatment. 
Dry matter (grams). 
Potash removed from soil (grams). 
Grain. 
Straw. 
Total. 
Aver¬ 
age 
total. 
Rela¬ 
tive 
rank 
of av¬ 
erage. 
Grain. 
Straw. 
Total. 
Aver¬ 
age 
total. 
Gain 
over 
no pot¬ 
ash. 
2 potassium sulphate plus 2 
calcium carbonate. 
18.6 
24.0 
42.6 
1 
jo. 102 
0.410 
0.512 
Do. 
19,4 
26.0 
45 * 4 
f 44*9 
100.0 
f .087 
■0.474 
0.409 
Do. 
20.9 
25.8 
46. 7 
J .084 
.416 
.502 
Biotite. 
9.9 
15-0 
24-9 
1 0 
f *039 
• 234 
.273 
Do. 
10.6 
18.6 
r 28. 7 
63.9 
{ *053 
■ *307 
- *M 
Do. 
12.4 
19. 8 
32- 2 
I 
1 -056 
.271 
*327 
2 biotite. 
11. 2 
17 * 5 
28. 7 
[ .os8 
. 299 
Do. 
13.0 
20.6 
33-6 
f 30*0 
66.8 
{ .062 
. 262 
• 324 
' *299 
* *34 
Do. 
10. 8 
16.9 
27.7 
J 
j .040 
.236 
. 276 
2 biotite plus calcium carbon- 
ate. 
9.8 
17.8 
27.6 
I 
[ .040 
. 240 
. 280 
1 
Do . 
12.6 
20.9 
f 3 i*o 
69.0 
< . 032 
f .299 
.234 
Do 
Os 3 * J 
l .046 
. 262 
.308 
2 biotite plus 2 calcium car- 
bonate. 
10.6 
16.4 
27.0 
f *044 
. 228 
. 272 
Do. 
13- 2 
18.9 
32-1 
29.1 
64.8 
< .050 
.240 
. 290 
• .278 
•213 
Do. 
13.0 
17-0 
30.0 
l .052 
. 219 
. 271 
Muscovite. 
6.4 
14.4 
20. 8 
f *029 
.218 
.247 
Do.. 
6.4 
14.0 
20.4 
21.3 
47*4 
\ *029 
. 200 
. 229 
‘ *303 
.238 
Do. 
7*9 
15-9 
23-8 
l .031 
. 224 
• 25s 
2 muscovite. 
7.0 
16.O 
23.0 
( *033 
. 206 
• 239 
Do. 
7.8 
16.9 
24 - 7 
• 23.8 
53*0 
{ *036 
. 200 
. 236 
•24I 
•179 
Do. 
8.0 
15.8 
23.8 
j .040 
.218 
.258 
2 muscovite plus calcium car- 
bonate. 
6.8 
13-6 
20.4 
1 
[ *030 
. 196 
. 226 
1 
Do. 
7 -1 
16. 0 
23.1 
f 22.3 
49.6 
\ *032 
. 218 
.250 
> .244 
.179 
Do. 
16. 0 
23-3 
| 
1 *033 
. 224 
.257 
j 
2 muscovite plus 2 calcium car- 
bonate. 
7.0 
IS-6 
22.6 
.029 
. 230 
• 259 
Do. 
6.9 
13-8 
20- 7 
21.3 
47*4 
.026 
. 206 
. 232 
■ . 240 
•175 
Do. 
7.6 
13.0 
20.6 
.031 
• 199 
• 230 
Do. 
3-6 
8.6 
12. 2 
■ 12.3 
27*3 
. 016 
.128 
• 144 
■ *143 
.075 
Do. 
3*6 
7*5 
n. 1 
.016 
. no 
. 126 
2 orthoclase.. 
3-8 
10.9 
14 - 7 
.012 
. 16a 
.174 
Do. 
4.8 
10.8 
15-6 
14*3 
31.8 
.019 
. 160 
.179 
■ . 172 
.107 
Do. 
3.0 
9-8 
12. 8 
.018 
. 146 
. 164 
Do. 
4.1 
Q. 0 
13.1 
.020 
• 174 
Do. 
3.9 
7.8 
10. 7 
- 12.1 
26.9 
.010 
. 126 
• 136 
■ . 148 
.073 
Do. 
3-8 
8.6 
12.4 
.016 
. 120 
• 136 
2 orthoclase plus calcium car- 
bonate. 
3-9 
8.6 
12.5 
.018 
. 118 
.136 
Do. 
3 -o 
10.0 
13-0 
13*7 
30*7 
.018 
.156 
.174 
■ .165 
. 100 
Do. 
4.6 
11.1 
IS* 7 
.022 
. 164 
.186 
Microcline. 
1.8 
6.2 
8.0 
.009 
• 083 
.092 
Do. 
.8 
5 -o 
5*8 
6.4 
14.2 
.004 
. 076 
.080 
■ .081 
.016 
Do. 
1.0 
4.4 
5*4 
. 007 
.064 
.071 
2 microcline... 
2.0 
5-6 
7.6 
.008 
.068 
.076 
Do... 
1. 2 
6.6 
7.8 
• 6.9 
15*4 
■ .006 
. 084 
.090 
•075 
.010 
Do.. 
.6 
4.8 
5*4 
.003 
•057 
. 060 
2 microcline plus calcium car- 
bonate. 
1.1 
S-o 
6.1 
1 
f ,004 
.072 
.076 
1 
Do. 
2.4 
7.0 
9.4 
r 7>I 
IS* 8 
< .007 
.088 
•09s 
> .080 
•01 s 
Do. 
•9 
4.9 
5*8 
1 
| .002 
.069 
.071 
j 
2 microcline plus 2 calcium car- 
bonate. 
• 5 
4-5 
5.0 
f .OOI 
.064 
• 065 
Do. 
1-7 
4.2 
5*9 
6.3 
14.0 
\ *003 
.074 
.077 
• *077 
.012 
Do. 
2. 2 
5-8 
8.0 
l .006 
• 083 
. 089 
Control (no potash). 
1.6 
4.0 
5.6 
J .002 
. 072 
.074 
Do. 
3-8 
' -065 
Do. 
•S 
4.9 
5*4 
| .004 
.063 
.067 
Control (no potash) plus cal- 
dum carbonate. 
*9 
5 -o 
5*9 
[ .002 
.072 
.044 
| 
Do.. 
.8 
3-2 
4.0 
f 4-8 
10. 7 
< .002 
• 056 
.058 
f *058 
None. 
Do. 
x.6 
2.8 
4.4 
1 
1 *003 
.041 
.074 
I 
Control (no potash) plus 2 cal- 
cium carbonate. 
1.1 
4.0 
5 *i 
I 
[ .002 
.066 
.068 
j 
Do... 
•9 
3-8 
4*7 
f 4*3 
9*5 
| .004 
.058 
*062 
> .06a 
None. 
Do. 
•5 
2.8 
3*3 
( *003 
•053 
.056 
1 
