Search PMN  


Tables 1, 2, and 3 from:


Singer, J. W., Moore, K. J., Hintz, R. L., Patrick, P. K., and Summer, P. 2007. Effect of source and rate of nitrogen and sulfur fertilizer on yield, quality, and mineral composition of stockpiled tall fescue. Online. Crop Management doi:10.1094/CM-2007-0507-01-RS.


Table 1. Sulfur and nitrogen constituents of stockpiled tall fescue fertilized with high lysine fertilizer (HLF), ammonium nitrate, and calcium sulfate harvested near Ames, IA in early and late October 2003 and 2004.

Harvest
date		 Treatment Rate N
(lb/
acre)		 S
(lb/
acre)		 n S (% DM) Total N
(%DM)		 NH4-N
(ppm)		 NO3-N
(ppm)
2003 2004 2003 2004 2003 2004 2003 2004
Early Control 0 0 0 4 0.23 0.26 1.43 1.58 331 185 8 20
HLF 1 23 20 4 0.31 0.35 1.88 1.74 439 225 9 20
2 46 40 4 0.33 0.38 2.14 1.84 522 231 9 20
3 91 80 4 0.38 0.42 2.43 2.04 669 254 99 20
NH4NO3 1 23 0 4 0.23 0.22 1.82 1.82 425 218 5 20
2 46 0 4 0.24 0.23 2.09 2.05 516 264 9 54
3 91 0 4 0.24 0.22 2.58 2.61 673 362 224 622
CaSO4 1 0 20 4 0.27 0.35 1.54 1.57 32 179 9 20
2 0 40 4 0.29 0.43 1.50 1.58 340 201 7 20
3 0 80 4 0.30 0.38 1.52 1.51 380 188 5 20
Late Control 0 0 0 4 0.22 0.16 1.42 1.41 254 157 2 20
HLF 1 23 20 4 0.24 0.23 1.63 1.55 312 193 3 21
2 46 40 4 0.25 0.25 1.95 1.73 397 250 3 82
3 91 80 4 0.30 0.26 2.28 1.91 360 261 18 20
NH4NO3 1 23 0 4 0.20 0.15 1.71 1.53 259 175 3 21
2 46 0 4 0.21 0.17 1.84 1.81 307 235 3 22
3 91 0 4 0.24 0.19 2.32 2.11 303 308 25 77
CaSO4 1 0 20 4 0.20 0.23 1.50 1.43 290 174 3 20
2 0 40 4 0.22 0.25 1.41 1.39 275 172 2 20
3 0 80 4 0.25 0.26 1.48 1.43 233 160 6 20
LSD (0.05) 0.06x 0.17 72 90
ANOVA df P > F
Year 1 0.076 0.038 >0.001 0.040
Treatment 9 0.008 >0.001 0.002 0.030
Year x Treatment 9 >0.001 0.024 0.161 0.013
Date 1 0.239 0.120 0.413 0.150
Year x Date 1 >0.001 0.081 >0.001 0.327
Treatment x Date 9 0.003 0.052 0.398 0.028
Year x Treatment x Date 9 0.889 0.590 >0.001 0.001

 x LSD compares treatment means for the same or different harvest and year.



Table 2. In vitro dry matter digestibility (IVDMD), crude protein (CP), neutral detergent fiber (NDF), and ash concentration as a percent of dry matter (DM) of stockpiled tall fescue fertilized with high lysine fertilizer (HLF), ammonium nitrate, and calcium sulfate harvested early and late near Ames, IA.

Treatment N
(lb/
acre)		 S
(lb/
acre)		 n IVDMD
(%DM)		 CP
(%DM)		 NDF
(%DM)		 Ash
(%DM)
2003 2004 2003 2004 2003 2004 2003 2004
Control  0   0 8 55.4 52.7 9.6   8.9 56.3 57.2 11.5 12.0
HLF 23 20 8 58.5 57.3 11.7 10.0 53.1 55.0 11.2 11.9
46 40 8 59.5 57.9 13.7 10.8 50.9 54.0 11.2 11.8
91 80 8 61.1 59.9 15.7 12.2 49.7 54.0 10.7 11.0
NH4NO3 23   0 8 57.7 55.7 11.8 10.3 53.2 55.2 10.9 11.7
46   0 8 59.4 58.4 13.2 11.9 51.9 53.8 11.0 10.9
91   0 8 59.5 61.2 16.4 14.6 51.4 53.0 10.2 10.0
CaSO4  0 20 8 56.0 54.2 10.2   9.0 55.4 56.1 11.5 12.3
 0 40 8 55.9 54.3   9.7   9.0 55.8 56.1 11.7 12.7
 0 80 8 56.9 54.7 10.2   8.8 55.2 56.7 11.5 12.4
LSD (0.05) 1.5x 0.7 0.9 0.4
Date Early 40 59.1 58.7 12.6 11.2 52.6 54.4 11.0 12.0
Late 40 56.9 54.6 11.8   9.9 54.0 55.9 11.3 11.4
LSD (0.05) 0.8y 0.3 NS 0.2
ANOVA df P > F
Year 1 0.251 >0.001    >0.001    0.063
Treatment 9 >0.001    >0.001    >0.001    0.001
Year x Treatment 9 0.226 0.013 0.101 0.191
Date 1 0.185 0.147 0.162 0.734
Year x Date 1 0.002 0.035 0.063 >0.001   
Treatment x Date 9 0.988 0.070 0.927 0.040
Year x Treatment x Date 9 0.336 0.465 0.007 0.922

 x LSD compares treatment and year by treatment means.

 y LSD compares harvest date and year by date means. NS = not significant.

Table 3. Mineral composition of stockpiled tall fescue fertilized with high lysine fertilizer (HLF), ammonium nitrate, and calcium sulfate harvested near Ames, IA, averaged across early and late harvest dates.

Treat-
ment		 N S n Mineral composition (ppm)
P K Ca Mg Na Cl
(lb/acre) '03 '04 '03 '04 '03 '04 '03 '04 '03 '04 '03 '04
Control  0   0 8 3181 2344 17484 17116 6058 5346 3153 2856 40 45 1750 1125
HLF 23 20 8 3133 2482 20280 20603 5630 4723 3116 2753 54 45 1875 1500
46 40 8 2980 2557 22801 23151 5077 4557 3138 2891 119 48 2063 1563
91 80 8 3104 2523 23703 25694 4612 3895 3326 2815 259 82 1875 1625
NH4NO3 23   0 8 3047 2335 20318 20470 5241 4644 3107 2820 86 38 1875 1313
46   0 8 3201 2295 22079 22501 4942 4503 3171 2961 106 126 1500 1313
91   0 8 3195 2498 24088 25714 4568 4055 3409 3217 134 127 1250 1188
CaSO4  0 20 8 3300 2032 18568 17071 5861 5830 3174 2796 36 127 1688 1125
 0 40 8 3557 2373 17949 17399 5937 5517 3155 2740 42 40 1688 1375
 0 80 8 3400 2155 18373 17000 6057 5787 3252 2664 60 122 1500 1438
LSD (0.05) 368x 1311 NS NS 98 NS
Date Early 40 3504 2686 22118 24502 5007 4798 3299 3095 88 108 2113 1588
Late 40 2916 2033 19010 16842 5789 4974 3101 2608 99 52 1300 1125
LSD (0.05) 106‡ 725 175 62 39 188
ANOVA df P > F
Year 1 >0.001    0.885 0.001 0.005 0.659 0.040
Treatment 9 0.951 >0.001    >0.001    0.068 0.327 0.050
Year x Treatment 9 0.017 0.004 0.303 0.117 0.025 0.594
Date 1 0.033 0.255 0.359 0.255 0.632 0.171
Year x Date 1 0.390 >0.001    >0.001    >0.001    0.017 0.011
Treatment x Date 9 0.224 0.617 0.394 0.024 0.249 0.238
Year x Treatment x Date 9 0.752 0.392 0.331 0.725 0.900 0.533

 x LSD compares treatment and year by treatment means. ‡LSD compares harvest date and year by date means. NS = not significant.




© 2007 Plant Management Network.