14 
As a result it may be said that the three crops removed from the soil 
an amount of phosphate equal to that added. There were, however, 
a few exceptions, especially where phosphate rock was used. These 
results offer information regarding the stunted growth of the last 
crop of millet and the increased effectiveness of phosphate rock as 
compared with the soluble phosphates in the second crop. 
The analyses furnish very little information regarding the variation 
in the phosphate content of the grain and straw. The percentage of 
phosphate in the grain was increased by the addition of phosphate 
fertilizer, regardless of its availability in some cases, while in others 
the reverse was true. The same may be said regarding the straw, 
there being no regularity in the analyses. The results are given in 
Table III: 
Table III. — Phosphoric acid content of grain and straw as influenced by phosphate 
fertilizers. 
Pot 
Nos. 
1,2 
5.6 
9,10.... 
13,14... 
17,18... 
21,22... 
25,26... 
29,30... 
33,34... 
37,38... 
41,42... 
45,46... 
49,50... 
53,54... 
57,58... 
61,62... 
65,66... 
69,70... 
73,74... 
77,78... 
81,82... 
85,86... 
89,90... 
93,94... 
97,98... 
101,102. 
105,106. 
109,110. 
113,114. 
117,118. 
121,122. 
125,126 
129,130. 
133,134 
137, 138 
141,142 
145, 146 
149, 150 
153, 154. 
157, 158 
161,162. 
165, 166 
169, 170 
173,174 
Fertilizer added. 
N-K-Ca-L 
N-K-Ca 
N-K-Ca-L 
N-K-Ca 
N-K-Ca^P i/«"(slag A) .' '.'.'.'.'.'.'.'.'.'.'.. 
N-K-Ca-P i/ 2 (slag A) 
N-K-Ca-L-P 1/2 (slag B) 
N-K-Ca-P 1/2 (slag B) 
N-K-Ca-L-P 1/2 (slag C) 
N-K-Ca-P 1/2 (slag C) 
N-K-Ca-L-P 1/2 (slag D) 
N-K-Ca-P 1/2 (slag D) 
N-K-Ca-L-P 1/2 (acid phosphate) 
N-K-Ca-P 1/2 (acid phosphate) 
N-K-Ca-L-P 1/2 (phosphate rock) 
N-K-Ca-P 1/2 (phosphate rock) 
N-K-Ca-L-P 1/2 (sodium phosphate) . 
N-K-Ca-P 1/2 (sodium phosphate) 
N-K-Ca-L-P 1 (slag A) 
N-K-Ca-P 1 (slag A) 
N-K-Ca-L-P 1 (slag B) 
N-K-Ca-P 1 (slag B) 
N-K-Ca-L-P x (slag C) 
N-K-Ca-P 1 (slag C) 
N-K-Ca-L-P x (slag D) 
N-K-Ca-P 1 (slag D ) 
N-K-Ca-L-P 1 (acid phosphate) 
N-K-Ca-P 1 (acid phosphate) 
N-K-Ca-L-P 1 (phosphate rock) 
N-K-Ca-P 1 (phosphate rock) 
N-K-Ca-L-P 1 (sodium phosphate).. 
N-K-Ca-P 1 (sodium phosphate) 
N-K-Cax-L-P 1 (sodium phosphate). 
N-K-Caz-P 1 (sodium phosphate). 
N 1 1/2-K 1/2-Ca-L-P 1 (sodium phosphate . . 
N 1 1/2-K 1 1/2-Ca-P 1 (sodium phosphate) . . . 
N-K-Ca-L-P 1 1/2 (sodium phosphate) 
N-K-Ca-P 1 1/2 (sodium phosphate) 
N-K-Ca-L-P 2 (phosphate rock) 
N-K-Ca-P 2 (phosphate rock) 
N-K-Ca-L-P 1/2 (superphosphate) 
N-K-Ca-P 1/2 (superphosphate) 
N-K-Ca-L-P 1 (superphosphate) 
N-K-Ca-P 1 (superphosphate) 
Millet I. 
Grain. Straw 
Per ct. 
0.293 
.399 
.250 
.425 
.454 
.592 
.392 
.598 
.395 
.619 
.333 
.464 
.350 
.376 
.584 
.300 
.278 
.229 
.200 
.578 
.367 
.252 
.265 
.307 
.443 
.584 
.358 
.345 
.666 
.471 
.329 
.537 
.189 
.377 
.277 
.421 
.510 
.351 
.388 
.369 
Per ct. 
0.121 
.172 
.099 
.092 
.192 
.277 
.196 
.209 
.173 
.263 
.116 
.157 
.135 
.126 
.219 
.240 
.179 
.133 
.077 
.079 
.108 
.051 
.097 
.134 
.143 
.171 
.275 
.162 
.172 
209 
224 
336 
,153 
.209 
,128 
,195 
,260 
.216 
.123 
.221 
.135 
Buckwheat. 
Grain. Straw 
Perct. 
0.383 
.404 
.413 
.433 
.483 
.638 
.503 
.515 
.453 
.478 
.488 
.408 
.462 
.616 
.472 
.562 
.443 
.509 
.593 
.645 
.518 
.598 
.581 
.428 
.428 
.617 
.675 
.498 
.507 
.494 
.732 
.509 
.519 
.538 
.680 
.657 
.752 
.650 
.764 
.652 
.576 
.682 
.522 
Perct. 
0.085 
.115 
.146 
.102 
.127 
.122 
.129 
.156 
.175 
.116 
.133 
.115 
.119 
.128 
.116 
.202 
.118 
.136 
.238 
.152 
.114 
.185 
.101 
.099 
.097 
.068 
.125 
.346 
.099 
.124 
.104 
.188 
.119 
.099 
.157 
.244 
.167 
.219 
.169 
.246 
.120 
.182 
.159 
.139 
Millet II. 
Grain. Straw 
Perct. 
0.218 
.180 
.337 
.208 
.368 
.237 
.356 
.274 
.365 
.361 
.350 
.325 
.236 
.249 
.283 
.299 
.368 
.406 
.349 
.488 
.422 
.407 
.397 
.316 
.262 
.294 
.502 
.448 
.314 
.507 
.521 
.383 
.464 
.421 
.387 
.452 
.547 
.672 
.672 
.349 
.627 
Perct. 
0.156 
,094 
,187 
,187 
.203 
,230 
,293 
,263 
.253 
.230 
.173 
.179 
.168 
.120 
.144 
.119 
.114 
.108 
.158 
.128 
.139 
.148 
.106 
.098 
.191 
.163 
.153 
.130 
.148 
.140 
.129 
.154 
.169 
.139 
.145 
.106 
.104 
.115 
.105 
.109 
.081 
.104 
