Illinois
Fertilizer Conference Proceedings
January 25-27, 1993
|
 |
Table 3: Recovery of applied NH4+-N and NO3--N in organic and
inorganic forms
| |
Catlin‡ |
Flanagan‡ |
Drummer‡ |
| Treatment† |
Org. |
Inorg. |
U.A. |
Org. |
Inorg. |
U.A. |
Org. |
Inorg. |
U.A. |
| |
----------------------------
% ---------------------------- |
| AS1 |
17.1 |
75.2 |
7.7 |
16.3 |
76.3 |
8.4 |
29.0 |
64.0 |
7.0 |
| AS2 |
14.7 |
81.3 |
4.0 |
15.0 |
81.5 |
3.6 |
23.6 |
63.3 |
13.4 |
| PN1 |
7.3 |
82.7 |
10.0 |
8.6 |
84.5 |
6.9 |
11.1 |
72.3 |
16.6 |
| PN2 |
7.9 |
82.9 |
9.2 |
7.8 |
85.6 |
6.6 |
12.2 |
73.7 |
14.1 |
| G1 + AS1 |
72.4 |
18.1 |
9.6 |
67.7 |
23.9 |
8.4 |
84.1 |
11.4 |
4.5 |
| G2 + AS2 |
72.6 |
16.9 |
10.5 |
71.0 |
16.9 |
12.1 |
79.3 |
10.7 |
10.0 |
| G1 + PN1 |
84.8 |
8.8 |
6.4 |
68.4 |
21.9 |
9.7 |
85.0 |
9.0 |
6.0 |
| G2 + PN2 |
79.2 |
16.6 |
4.3 |
69.3 |
21.9 |
8.8 |
81.1 |
9.1 |
9.9 |
†AS1 and AS2, (NH4)2SO4 added
at a rate of 100 and 200 mg N kg-1 soil, respectively;
PN1 and PN2, KNO3 added at a rate of 100 and 200 mg N kg-1 soil, respectively;
G1 and G2, glucose added at a rate of 3 and 6 g kg-1 soil, respectively
‡ Org., N recovered by Kjeldahl digestion of KCl-extracted
soil; Inorg., (NH4+ + NO3-)-N recovered in KCl extract; U.A., applied N not
accounted for as organic or inorganic forms.
Back to Main Report
