Table 7.
Effects of row-type (RT, single, S or twin, T), seeding rate (SR, seed m–2), and planting date on seed protein, oil, fatty acids (g kg–1), sucrose (Suc), stachyose (Stac), glucose (Glu) (mg g–1), boron (B, mg kg–1), phosphorus (P, g kg–1), and iron (Fe, mg kg–1) in soybean in Beulah fine sandy loam soil in 2009 at Stoneville, MS, USA.
| Planting | RT | SR | Protein | Oil | Oleic | Linolenic | Suc | Stac | Glu | B | P | Fe |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| April | 20 | 419 | 231 | 258 | 63.1 | 55.0 | 23.1 | 4.1 | 42.7 | 5.0 | 60.6 | |
| S | 30 | 419 | 223 | 270 | 66.6 | 54.5 | 26.4 | 4.1 | 48.2 | 5.0 | 65.5 | |
| 40 | 421 | 234 | 246 | 73.6 | 54.8 | 25.8 | 3.9 | 48.1 | 6.0 | 71.5 | ||
| 50 | 419 | 236 | 220 | 81.3 | 55.3 | 27.4 | 4.1 | 40.8 | 4.9 | 55.0 | ||
| LSD | 2.60 | 2.40 | 2.90 | 3.90 | 0.93 | 1.30 | 0.20 | 1.20 | 0.07 | 1.70 | ||
| 20 | 416 | 229 | 264 | 68.2 | 60.3 | 28.0 | 5.6 | 46.7 | 5.4 | 65.5 | ||
| T | 30 | 424 | 230 | 254 | 65.5 | 65.3 | 26.4 | 5.7 | 52.8 | 6.5 | 58.5 | |
| 40 | 422 | 230 | 239 | 84.7 | 66.3 | 27.7 | 5.6 | 53.8 | 6.5 | 63.3 | ||
| 50 | 422 | 233 | 252 | 79.1 | 67.5 | 25.1 | 5.5 | 54.1 | 5.2 | 67.0 | ||
| LSD | 5.00 | 3.60 | 6.50 | 5.20 | 3.00 | 1.30 | 0.21 | 1.30 | 0.08 | 1.90 | ||
| May | 20 | 448 | 208 | 269 | 67.4 | 55.3 | 19.0 | 4.2 | 33.4 | 3.9 | 62.8 | |
| S | 30 | 457 | 208 | 275 | 63.8 | 60.5 | 17.8 | 4.4 | 34.3 | 3.8 | 56.3 | |
| 40 | 460 | 211 | 231 | 76.3 | 60.8 | 18.8 | 4.1 | 38.9 | 4.9 | 64.0 | ||
| 50 | 466 | 212 | 224 | 80.3 | 57.3 | 16.4 | 3.9 | 36.4 | 5.0 | 65.8 | ||
| LSD | 5.10 | 2.60 | 4.50 | 3.30 | 2.60 | 2.30 | 0.16 | 1.90 | 0.08 | 1.90 | ||
| 20 | 469 | 215 | 279 | 63.2 | 58.0 | 18.9 | 5.6 | 34.5 | 5.3 | 63.8 | ||
| T | 30 | 450 | 216 | 270 | 58.8 | 72.0 | 20.2 | 5.5 | 42.9 | 6.1 | 57.5 | |
| 40 | 437 | 206 | 254 | 83.1 | 75.8 | 22.9 | 5.8 | 44.5 | 5.5 | 56.5 | ||
| 50 | 456 | 212 | 242 | 80.8 | 63.3 | 22.2 | 5.7 | 44.0 | 5.2 | 55.0 | ||
| LSD | 5.90 | 2.00 | 5.30 | 2.00 | 2.60 | 2.00 | 0.19 | 1.40 | 0.18 | 2.00 | ||
| June | 20 | 463 | 213 | 291 | 57.9 | 61.3 | 16.4 | 4.0 | 30.9 | 3.9 | 55.8 | |
| S | 30 | 460 | 213 | 281 | 63.8 | 63.8 | 18.9 | 4.0 | 38.4 | 4.0 | 65.0 | |
| 40 | 451 | 211 | 236 | 80.6 | 63.8 | 18.2 | 4.2 | 35.7 | 4.7 | 55.5 | ||
| 50 | 466 | 211 | 263 | 81.6 | 62.8 | 18.3 | 4.5 | 34.8 | 5.1 | 65.5 | ||
| LSD | 3.50 | 2.30 | 6.90 | 3.20 | 1.80 | 1.80 | 0.16 | 1.30 | 0.15 | 0.81 | ||
| 20 | 454 | 213 | 287 | 58.5 | 64.8 | 20.8 | 5.6 | 34.4 | 4.5 | 74.0 | ||
| T | 30 | 447 | 207 | 297 | 62.1 | 70.8 | 21.5 | 5.6 | 43.4 | 4.4 | 72.0 | |
| 40 | 462 | 209 | 245 | 79.5 | 72.5 | 18.4 | 5.6 | 44.1 | 4.5 | 71.0 | ||
| 50 | 452 | 211 | 240 | 79.1 | 71.0 | 21.4 | 5.6 | 44.8 | 4.5 | 64.5 | ||
| LSD | 3.00 | 2.90 | 3.60 | 1.90 | 1.90 | 1.70 | 0.20 | 1.50 | 0.09 | 2.20 |
Means were separated by Fisher’s least significant difference LSD (0.05). Suc, sucrose; stac, stachyose, and glu, glucose.