Table 1.
Differential] Soil Microbial Populations for Three Soil Depth Segments
Before Planting and at Harvest*
FUNGI
Soil
Total
Numbers
per Gram
Segment
(cm)
Dry Soil
(Thousands)
TL
Depth
00|0-3
m4 3-6
w o{6-9
m 4|0-9
Au
0-3
in 3-6
2 $|6-9
8 0-9
%
of Oven-
Mucors
4.2 + 1.6
9.6 + 3.2
12.4 + 4.3
22 +
10 +
10 +
8.7+3.0
27.9
12.6
10.7
17.1
+
+
+
+
8.1
3.1
3.7
5.0
ts
BACTERTA
he
hs
he
Asper-
Pent-
Dema-
Others
6
2
4
7 +4
25 + 8
27 +7
;,11 +4 4
36 + 10
42 + 12
22 £4
2+ 1
1+ 0.
39 +7
27 +5
21 +5
48+ 7
28+ 5
26 + 11
34 + 8
14 +4
10+ 4
2+
9+3)
22 + 10
7+ 2
31+ :12
20+ 8
341
2549
19 +7
16 + 6
17
29
23
23
gtllt
144+ 4);20+6/
etllia
30+
titaceae
9]
842
*Al11 values are expressed as the average + 1 standard error.
29 + 6
+ 5
+ 8
+ 7
+7
Total
Numbers
per Gram
otreptomyces
Numbers
per Gram
hs
Dry Soil
(Millions)
Dry Soil
(Millions)
of Oven-
3.9 +
4.7 +
4.5 +
4.4 +
101.3
37.4
16.8
51.8
0.5
0.6
0.6
0.6
+ 30.2
+ 13.4
+ 5.1
+ 16.2
of Oven~
0.9 + 0.02
1.8 + 0.02
2.0 + 0.02
24 + 3
39 + 3
44 4 3
9,1
4.5
3.0
6.7
9+4
12 + 3
18 + 3
13 + 3
1.6 + 0.02
41.2
+ 0.4
+ 0.2
+ 0.5
36 + 3