4io 
Journal of Agricultural Research 
Vol. XXVI, No. 9, 
fr™ e +t, reSUltS ° f chemical analyses (Table II) of samples of soil taken 
TT to cV, £ reater wa ter-holding capacity of such soils In Table 
a- r? ssa 
; h o“‘ (Sastawa 
f T°;' A . hl E e number of bormgs were taken about 50 meters distant 
a uy mfection to represent noninfected soil. The humus and or 
game matter were determined from the same air-dried samples The 
dilSe 8 HQ C ff e n I ^ med ^ y re T- Vitlg 1116 calcium from 10 gm. of soil ^th 
°- U V h6 Chl ° rids ’ extr ^ing the^soil 
intens^nf Vuiif P c<a * ammonia for 24 hours, and measuring the 
solution^ ru he llUm ^ S co ° r m a colorimeter against a standard humus 
olution. The organic carbon was determined by boiling 20 gm of soil 
Se lige°r Imount ^tT Xt -. re ° f and P otassium bidmi, using 
of orgaSc matter C °?* Unin * more tha n the average amount 
120 |n of the biclimm^ d t miX re W&S ? ade up in 1116 Proportion of 
o * ^ enc Dicnromate to 1,000 cc of cotiopn 
'»*“> » N »/3 NaOH in a tead SrfS 
hydroxid solution removed and titrated. ae 
Field No. 
Humus, fi 
rst foot. 
Organic carbon, first foot. 
Infected. 
Non¬ 
infected. 
Difference.** 
Infected. 
Non¬ 
infected. 
Difference.® 
I. 
577 
. 182 
. 096 
. 207 
• 500 
. 700 
. 822 
. 286 
.882 
. 400 
. 182 
•715 
. 500 
•455 
. 62c 
• 3 i 3 
• S »7 1 
• 832 j 
f\o f 1 
O. 832 
+°- 235 
+• I2 S 
+. 211 
+. IOO 
j 
2. 
O. 818 
0. 883 
+0. 065 
+-°55 
j + . O78 
j -* 144 
I +• 027 
j +-°SS 
+ . 300 
"j~. 089 
—. 082 
3. 
• 3°7 
. 269 
• 3 2 4 
4. 
• 307 
. 246 
• 3 2 4 
5. 
• 307 
j .468 
• 3 2 4 
6. 
. 500 
I • OOO 
+• 070 
j . 201 
. 228 
7. 
1 • 770 
1 -382 
• 437 
8. 
• 750 
I . 276 
. 832 
.476 
. 267 
—. 072 
| . 127 
• 4 2 7 
9. 
—. OIO 
| * 427 
. 516 
10. 
-. 050 
+• 076 
+■ <>85 
1 . 812 
• 730 
11. 
. 49 ° 
. 617 
+ . 127 
1 +• 103 
i “• 134 
~. 103 
+• 43 2 
+■385 
+• 074 
+• 232 
-f. 051 
+• 338 
+. 074 
+• 312 
+• J S 9 
T* 288 
12. 
. 298 
. 401 
13. 
• 7 i 5 
.308 
. OOO 
. 691 
• 557 1 
14. 
—. 192 
t- 66 5 
+. 090 
+. 163 
+• °95 
+. 240 j 
•518 
• 4 i 5 
15. 
I. 120 ! 
• 535 
• 967 
16. 
• 7 i 5 
.476 
<Q n 
• 595 
. 980 | 
17. 
. 286 
.360 I 
18. 
. 0o2 j 
I. 072 
. 625 
•334 
.5661 
19. 
• 57 i 
. 622 I 
20. 
• ° 2 5 
. 000 j 
+.250 | 
+. 140 
.310 
. 648 1 
21. 
.860 
1.250 
• 939 
• 939 
I. 250 
•758 
. 832 
22. 
I. OOO 
. 782 
1. 094 
23. 
I. 250 
. 000 
+• 5 6 i 
. 926 
1. 085 
24. 
I. 500 
• 832 
•353 
. 641 
—. 107 
• 797 
• § 93 
+. 096 
Average . .. 
. 603 
•715 
+. II 2 ±. O258 
• 5 00 
. 620 
+• I20±. 0214 
a Difference plus indicates 
reverse. 
the greater percentage in noninfected areas; 
difference m 
linus indicates the 
