Table 3. Forage
quality of an alfalfa-orchardgrass mixture with sulfur fertilization at
2006.
|
|
Quality component† |
||||
|
Treatment‡ |
CP |
ADF |
NDF |
HEMI |
RFV |
|
|
------------------------------
% of dry weight ------------------------------ |
||||
|
|
|
||||
|
|
First cutting (June
5) |
||||
|
Check
(no fertilizer) |
10.0 |
33.2 |
51.5 |
18.3 |
114.0 |
|
Ammonium
sulfate |
15.5 |
30.5 |
45.4 |
15.0 |
133.7 |
|
Zinc
sulfate |
15.2 |
33.8 |
46.6 |
12.8 |
126.7 |
|
Gypsum |
16.8 |
29.3 |
43.1 |
13.8 |
143.5 |
|
S-15 |
16.5 |
31.4 |
44.3 |
12.9 |
135.5 |
|
Elemental
sulfur |
15.2 |
31.1 |
46.0 |
14.9 |
131.0 |
|
Zinc
sulfate + Max-In |
16.8 |
30.2 |
42.7 |
12.6 |
142.5 |
|
|
|
|
|
|
|
|
Mean |
15.2 |
31.1 |
45.4 |
14.3 |
133.6 |
|
LSD 0.05 |
3.2 |
NS |
NS |
NS |
NS |
|
CV, % |
10.0 |
7.6 |
7.5 |
11.8 |
10.0 |
|
|
|
|
|
|
|
|
|
Third cutting
(August 11) |
||||
|
Check
(no fertilizer) |
16.9 |
23.1 |
32.8 |
9.7 |
201.6 |
|
Ammonium
sulfate |
21.4 |
20.2 |
30.6 |
10.4 |
223.6 |
|
Zinc
sulfate |
21.3 |
20.6 |
31.0 |
10.4 |
220.6 |
|
Gypsum |
22.8 |
21.3 |
36.0 |
14.6 |
188.1 |
|
S-15 |
21.2 |
21.5 |
34.5 |
13.1 |
196.9 |
|
Elemental
sulfur |
21.3 |
21.3 |
30.7 |
9.3 |
219.5 |
|
Zinc
sulfate + Max-In |
21.8 |
21.2 |
32.0 |
10.8 |
215.9 |
|
|
|
|
|
|
|
|
Mean |
21.0 |
21.5 |
32.5 |
11.1 |
208.5 |
|
LSD
0.05 |
1.7 |
NS |
NS |
NS |
NS |
|
CV,
% |
3.4 |
5.3 |
6.7 |
15.0 |
7.8 |
|
|
|
|
|
|
|
† CP=crude protein, ADF=acid-detergent fiber, NDF=neutral-detergent fiber, HEMI=hemicellulose, RFV=relative feed value
‡Sulfur applied at 20 lb/acre in 2005 fall and following second harvest in 2006.