Table
1. Effect of
date and rate of nitrogen application averaged over lime
rate on dry matter yield of bahiagrass, 1990.
Date
of Application
Cutting
date
4/1
5/1
6/1
7/1
6/04
6/29
7/26
11/15
Total
Ammonium
nitrate
----------lb/acre----------
-----lb/acre------
0
0
0
0
1,060
1,095
477
233
2,867
200
0
200
0
1,228
1,333
728
251
3,541
100
100
100
100
1,807
1,740
778
232
4,557
400
0
400
0
1,674
1,628
882
329
4,514
Mean
1,443
1,449
716
261
3,870
LSD
0.05
127
197
118
62
268
CV%
12.0
18.5
22.3
32.3
9.4
Table
2. Effect of date and rate of nitrogen application averaged
over lime rate on acid detergent fiber of bahiagrass,
1990.
Date
of Application
Cutting
date
4/1
5/1
6/1
7/1
6/04
6/29
7/26
11/15
Average
Ammonium
nitrate
----------%----------
------lb/acre------
0
0
0
0
38.7
39.2
40.2
35.5
38.4
200
0
200
0
38.8
38.5
39.3
34.9
37.9
100
100
100
100
37.6
39.2
37.9
34.5
37.3
400
0
400
0
36.5
37.2
36.8
33.7
36.0
Mean
37.9
38.5
38.5
34.6
37.4
LSD
0.05
0.7
1.1
1.4
1.1
0.5
CV%
1.8
2.7
3.6
3.0
2.9
Table
3. Effect of date and rate of nitrogen application averaged
over lime rate on crude protein percentage of bahiagrass,
1990.
Date
of Application
Cutting
date
4/1
5/1
6/1
7/1
6/04
6/29
7/26
11/15
Average
Ammonium
nitrate
----------%----------
------lb/acre------
0
0
0
0
10.5
10.4
10.1
6.7
9.4
200
0
200
0
10.9
12.3
11.4
7.0
10.4
100
100
100
100
12.2
11.7
12.1
7.7
10.9
400
0
400
0
13.4
13.7
13.6
8.2
12.2
Mean
11.7
12.0
11.8
7.4
10.7
LSD
0.05
0.7
0.7
0.8
0.7
0.3
CV%
4.8
5.4
6.3
8.9
6.6
Table
4. Effect of date and rate of nitrogen application averaged
over lime on total digestible nutrient yield of bahiagrass,
1990.
Date
of Application
Cutting
date
4/1
5/1
6/1
7/1
6/04
6/29
7/26
11/15
Average
Ammonium
nitrate
----------lb/acre----------
-----lb/acre-----
0
0
0
0
604
619
265
120
1,609
200
0
200
0
700
761
409
130
2,000
100
100
100
100
1,048
984
448
120
2,600
400
0
400
0
989
951
518
170
2,629
Mean
836
829
410
135
2,210
LSD
0.05
105
152
108
NS
223
CV%
12.3
17.8
25.4
40.1
9.9
Table
5. Effect of date and rate of nitrogen application averaged
over lime rate on neutral detergent fiber of bahiagrass,
1990.
Date
of Application
Cutting
date
4/1
5/1
6/1
7/1
6/04
6/29
7/26
11/15
Average
Ammonium
nitrate
----------%----------
-----lb/acre-----
0
0
0
0
76.0
76.0
73.7
68.6
73.3
200
0
200
0
75.7
75.7
73.2
68.1
72.8
100
100
100
100
75.0
75.0
72.8
67.8
72.5
400
0
400
0
74.7
74.7
71.8
66.9
71.7
Mean
75.3
74.2
72.9
67.8
72.6
LSD
0.05
NS
0.7
1.1
0.9
0.6
CV%
1.3
0.8
1.1
0.9
1.2
Table
6. Effect of date and rate of nitrogen application averaged
over lime rate on dry matter yield of bahiagrass,
1991.
Date
of Application
Cutting
date
4/1
5/1
6/1
7/1
5/24
6/18
7/22
8/12
Total
Ammonium
nitrate
----------lb/acre----------
-----lb/acre-----
0
0
0
0
1,137
787
934
753
3,612
200
0
200
0
1,145
1,008
1,103
768
4,025
100
100
100
100
1,276
952
1,096
798
4,122
400
0
400
0
1,297
1,108
1,112
808
4,324
Mean
1,214
964
1,061
782
3,997
LSD
0.05
NS
102
NS
NS
481
CV%
19.1
10.3
21.6
19.9
11.6
Table
7. Effect of date and rate of nitrogen application averaged
over lime rate on crude protein of bahiagrass,
1991.
Date
of Application
Cutting
date
4/1
5/1
6/1
7/1
5/24
6/18
7/22
8/12
Average
Ammonium
nitrate
----------lb/acre----------
-----lb/acre-----
0
0
0
0
12.5
12.3
13.0
13.8
12.9
200
0
200
0
12.3
15.0
14.5
14.4
14.0
100
100
100
100
12.2
14.3
15.3
14.9
14.2
400
0
400
0
12.8
15.6
15.4
16.0
14.9
Mean
12.4
14.3
14.5
14.8
14.0
LSD
0.05
1.3
1.3
1.2
0.8
0.6
CV%
6.6
8.8
8.4
4.9
6.7
Table
8. Effect of date and rate of nitrogen application averaged
over lime rate on total digestible nutrient yield of
bahiagrass, 1991.
Date
of Application
Cutting
date
4/1
5/1
6/1
7/1
5/24
6/18
7/22
8/12
Total
Ammonium
nitrate
----------lb/acre----------
-----lb/acre-----
0
0
0
0
629
429
513
424
1,995
200
0
200
0
631
554
619
439
2,243
100
100
100
100
697
527
618
453
2,295
400
0
400
0
709
607
628
468
2,412
Mean
666
529
594
446
2,236
LSD
0.05
NS
53
NS
NS
265
CV%
19.1
9.7
21.1
20.0
11.8
Table
9. Effect of date and rate of nitrogen application averaged
over lime rate on neutral detergent fiber of bahiagrass,
1991.
Date
of Application
Cutting
date
4/1
5/1
6/1
7/1
5/24
6/18
7/22
8/12
Average
Ammonium
nitrate
----------%----------
-----lb/acre-----
0
0
0
0
73.3
73.5
72.7
73.4
73.3
200
0
200
0
73.7
73.1
71.7
72.4
72.7
100
100
100
100
73.7
73.1
72.0
71.6
72.6
400
0
400
0
73.9
73.0
71.6
70.9
72.4
Mean
73.7
73.2
72.4
71.7
72.7
LSD
0.05
NS
NS
0.9
1.1
0.6
CV%
0.9
1.2
1.1
1.4
1.1
Table
10. Effect of date and rate of nitrogen application averaged
over lime rate on acid detergent fiber of bahiagrass,
1991.
Date
of Application
Cutting
date
4/1
5/1
6/1
7/1
5/24
6/18
7/22
8/12
Average
Ammonium
nitrate
----------%----------
-----lb/acre-----
0
0
0
0
38.6
39.4
39.1
37.8
38.7
200
0
200
0
38.9
39.5
38.0
36.6
38.3
100
100
100
100
39.3
38.9
37.7
37.2
38.3
400
0
400
0
39.6
39.7
37.5
36.1
38.2
Mean
39.1
39.4
38.1
36.9
38.4
LSD
0.05
NS
NS
1.2
0.9
NS
CV%
3.2
2.4
2.8
2.5
2.7
Table
11. Effect of date and rate of nitrogen application averaged
over lime rate on dry matter yield of bahiagrass,
1992.
Date
of Application
Cutting
date
4/1
5/1
6/1
7/1
5/16
6/30
7/14
7/31
8/27
9/30
Total
Ammonium
nitrate
-------------lb/acre------------
-----lb/acre------
0
0
0
0
700
771
677
512
747
617
4,046
200
0
200
0
940
1,031
988
657
1,188
777
5,697
100
100
100
100
1,202
1,110
1,109
524
1,417
918
6,144
400
0
400
0
1,399
1,029
1,073
502
1,257
991
6,123
Mean
1,060
985
961
549
1,152
825
5,503
LSD
0.05
239
132
223
79
164
157
663
CV%
21.8
13.0
22.5
13.9
14.8
18.1
11.6
Table
12. Effect of date and rate of nitrogen application averaged
over lime rate on crude protein of bahiagrass,
1992.
Date
of Application
Cutting
date
4/1
5/1
6/1
7/1
5/16
6/30
7/14
7/31
Average
Ammonium
nitrate
-----------%------------
-------lb/acre-------
0
0
0
0
14.1
13.3
11.3
12.2
12.7
200
0
200
0
14.3
12.9
14.0
15.8
14.2
100
100
100
100
15.1
13.0
13.6
17.3
14.7
400
0
400
0
16.4
12.8
15.0
18.1
15.6
Mean
15.0
12.9
13.5
15.8
14.3
LSD
0.05
1.2
NS
0.5
1.0
0.5
CV%
7.5
8.9
3.6
5.9
6.4
Table
13. Effect of date and rate of nitrogen application averaged
over lime rate on total digestible nutrient yield of
bahiagrass, 1992.
Date
of Application
Cutting
date
4/1
5/1
6/1
7/1
5/16
6/30
7/14
7/31
Total
Ammonium
nitrate
-----------lb/acre------------
-------lb/acre-------
0
0
0
0
391
422
352
279
1,457
200
0
200
0
525
562
540
375
2,002
100
100
100
100
676
606
593
299
2,175
400
0
400
0
828
560
588
293
2,316
Mean
598
541
518
311
1,995
LSD
0.05
127
76
115
47
250
CV%
20.1
13.3
21.7
14.6
11.7
Table
14. Effect of date and rate of nitrogen application averaged
over lime rate on acid detergent fiber of bahiagrass,
1992.
Date
of Application
Cutting
date
4/1
5/1
6/1
7/1
5/16
6/30
7/14
7/31
Average
Ammonium
nitrate
-----------%------------
-------lb/acre-------
0
0
0
0
38.4
39.8
42.6
40.0
40.2
200
0
200
0
38.4
39.9
39.9
37.5
38.9
100
100
100
100
38.2
39.8
41.2
37.6
39.2
400
0
400
0
38.2
40.0
39.9
36.2
38.6
Mean
38.3
39.9
40.9
37.8
39.2
LSD
0.05
NS
NS
0.9
1.2
0.6
CV%
2.3
2.7
2.4
3.2
1.6
Table
15. Effect of date and rate of nitrogen application averaged
over lime rate on neutral detergent fiber of bahiagrass,
1992.
Date
of Application
Cutting
date
4/1
5/1
6/1
7/1
5/16
6/30
7/14
7/31
Average
Ammonium
nitrate
-----------%------------
-------lb/acre-------
0
0
0
0
72.1
73.6
74.9
74.0
73.7
2
0
200
0
71.6
73.1
71.7
72.1
72.1
100
100
100
100
71.1
73.1
73.2
72.0
72.3
400
0
400
0
70.4
73.2
72.4
71.2
71.8
Mean
71.3
73.2
73.1
72.3
72.5
LSD
0.05
NS
NS
0.9
0.8
0.6
CV%
1.8
1.6
1.3
1.2
1.4
Table
16. Effect of lime averaged over nitrogen rate on dry matter
yield of bahiagrass, 1990-92.
Lime
1990
1991
1992
Total
------------lb/acre------------
3,000
3,879
3,997
5,678
13,553
0
3,861
3,998
5,327
13,185
Mean
3,870
3,997
5,503
13,370
LSD
0.05
NS
NS
NS
NS
CV%
9.4
11.6
11.6
11.8
Table
17. Effect of date and rate of nitrogen application averaged
over lime rate on dry matter yield of bahiagrass,
1990-92.
Date
of Application
Year
4/1
5/1
6/1
7/1
90
91
92
Total
Ammonium
nitrate
-----lb/acre-----
-----lb/acre-----
0
0
0
0
2,867
3,612
4,046
10,525
200
0
200
0
3,541
4,025
5,697
13,263
100
100
100
100
4,557
4,122
6,144
14,823
400
0
400
0
4,514
4,324
6,123
14,961
Mean
3,870b*
3,997b
5,503a
13,370
LSD
0.05
268
481
663
904
CV%
9.4
11.6
11.6
11.8
*Means within a
row followed by the same letter are not different at the 5%
level of significance according to LSD.
Table
18. Effect of date and rate of nitrogen application averaged
over lime rate on total digestible nutrient yield of
bahiagrass, 1990-92.
Date
of Application
Year
4/1
5/1
6/1
7/1
90
91
92
Total
Ammonium
nitrate
------lb/acre------
------lb/acre------
0
0
0
0
1,608
1,995
1,458
5,091
200
0
200
0
2,000
2,242
2,001
6,243
100
100
100
100
2,600
2,295
2,176
7,071
400
0
400
0
2,629
2,412
2,316
7,357
Mean
2,209
2,236
1,994
2,149
LSD
0.05
223
265
250
393
CV%
9.9
11.8
11.7
10.5
Table
19. Effect of date and rate of nitrogen application averaged
over lime rate on crude protein of bahiagrass,
1990-92.
Date
of Application
Year
4/1
5/1
6/1
7/1
90
91
92
Total
Ammonium
nitrate
------%------
------lb/acre------
0
0
0
0
9.4
12.9
12.7
11.7
200
0
200
0
10.4
14.0
14.2
12.9
100
100
100
100
10.9
14.2
14.8
13.2
400
0
400
0
12.2
15.0
15.6
14.2
Mean
10.7c*
14.0b
14.3a
13.0
LSD
0.05
0.3
0.6
0.5
0.3
CV%
6.6
6.7
6.4
3.7
*Means within a
row followed by the same letter are not different at the 5%
level of significance according to LSD.
Table
20. Effect of date and rate of nitrogen application averaged
over lime rate on acid detergent fiber of bahiagrass,
1990-92.
Date
of Application
Year
4/1
5/1
6/1
7/1
90
91
92
Average
Ammonium
nitrate
------%------
------lb/acre------
0
0
0
0
38.4
38.7
40.2
39.1
200
0
200
0
37.9
38.2
38.9
38.4
100
100
100
100
37.3
38.3
39.1
38.2
400
0
400
0
36.0
38.2
38.6
37.6
Mean
37.4b*
38.4a
39.2a
38.2
LSD
0.05
0.5
NS
0.6
0.7
CV%
2.9
10.7
1.6
3.0
*Means within a
row followed by the same letter are not different at the 5%
level of significance according to LSD.
Table
21. Effect of date and rate of nitrogen application averaged
over lime rate on neutral detergent fiber of bahiagrass,
1990-92.
Date
of Application
Year
4/1
5/1
6/1
7/1
90
91
92
Total
Ammonium
nitrate
------%------
------lb/acre------
0
0
0
0
73.3
73.2
73.7
73.4
200
0
200
0
72.8
72.7
72.1
72.5
100
100
100
100
72.5
72.6
72.3
72.4
400
0
400
0
71.7
72.4
71.8
72.0
Mean
72.6
72.7
72.5
72.6
LSD
0.05
0.6
0.6
0.6
NS
CV%
1.2
1.1
1.4
2.7
Table
22. Effect of lime averaged over nitrogen rate on final soil
fertility, 1992.
Lime
Nutrient
pH
P
K
Ca
Mg
Zn
lb/acre
----------lb/acre----------
3,000
6.0
28.9
81.3
761
257
3.0
0
5.4
23.4
68.4
459
129
2.8
Mean
5.4
26.3
74.9
610
193
2.9
LSD
0.05
0.1
NS
NS
81
46
NS
CV%
2.3
26.9
27.7
17.7
34
95
Table
23. Effect of date and rate of nitrogen application averaged
over lime rate on final soil fertility, 1992.
Date
of Application
Nutrient
4/1
5/1
6/1
7/1
pH
P
K
Ca
Mg
Zn
Ammonium
nitrate
----------lb/acre----------
------lb/acre------
0
0
0
0
5.9
36.2
98.6
652
240
2.4
200
0
200
0
5.7
26.8
74.1
614
184
3.7
100
100
100
100
5.7
25.9
76.4
670
207
2.0
400
0
400
0
5.4
16.4
50.4
505
142
3.5
Mean
5.4
26.3
74.9
610
193
2.9
LSD
0.05
0
7.3
21.5
112
68
NS
CV%
2.3
26.9
27.7
17.7
34
95
Table
24. Effect of nitrogen rate on value of bahiagrass as
determined by value of total digestible nutrient as computed
using the price of cotton seed meal for protein and corn for
energy, 1990-92.