Table 8.
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 2010 at Stoneville, MS, USA.
| Planting | RT | SR | Protein | Oil | Oleic | Linolenic | Suc | Stac | Glu | B | P | Fe |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| April | 20 | 408 | 226 | 280 | 57.3 | 41.5 | 30.0 | 2.9 | 34.7 | 4.0 | 44.5 | |
| S | 30 | 419 | 194 | 289 | 58.4 | 42.8 | 28.3 | 2.8 | 26.4 | 2.9 | 50.5 | |
| 40 | 423 | 197 | 296 | 59.5 | 49.3 | 30.3 | 2.5 | 27.8 | 3.7 | 49.3 | ||
| 50 | 415 | 226 | 300 | 55.6 | 40.3 | 32.3 | 2.5 | 32.8 | 4.0 | 44.5 | ||
| LSD | 3.30 | 2.90 | 6.70 | 2.90 | 2.18 | 2.50 | 0.18 | 1.50 | 0.16 | 1.51 | ||
| 20 | 430 | 205 | 301 | 58.4 | 46.8 | 33.5 | 3.8 | 36.5 | 4.1 | 56.0 | ||
| T | 30 | 423 | 204 | 289 | 57.5 | 49.8 | 35.3 | 3.8 | 32.6 | 4.8 | 54.8 | |
| 40 | 433 | 197 | 287 | 58.1 | 48.3 | 34.3 | 3.8 | 33.9 | 3.2 | 55.5 | ||
| 50 | 431 | 199 | 272 | 56.5 | 49.8 | 30.8 | 3.7 | 43.9 | 3.8 | 64.8 | ||
| LSD | 2.90 | 2.50 | 7.4 | 2.10 | 2.40 | 1.96 | 0.20 | 1.69 | 0.10 | 0.67 | ||
| May | 20 | 423 | 191 | 306 | 57.6 | 37.5 | 33.0 | 2.6 | 25.5 | 2.9 | 50.8 | |
| S | 30 | 425 | 202 | 302 | 55.7 | 50.8 | 26.8 | 2.6 | 30.5 | 3.0 | 46.8 | |
| 40 | 420 | 206 | 302 | 57.3 | 40.3 | 30.0 | 2.3 | 40.2 | 5.1 | 44.3 | ||
| 50 | 413 | 230 | 296 | 56.8 | 37.5 | 29.5 | 2.3 | 28.4 | 4.1 | 44.8 | ||
| LSD | 2.70 | 2.00 | 7.10 | 2.90 | 2.00 | 2.20 | 0.18 | 1.00 | 0.08 | 1.90 | ||
| 20 | 421 | 202 | 296 | 58.1 | 50.3 | 30.0 | 3.8 | 24.3 | 4.0 | 52.8 | ||
| T | 30 | 418 | 201 | 302 | 51.7 | 49.5 | 28.5 | 3.8 | 33.1 | 3.0 | 55.5 | |
| 40 | 420 | 211 | 300 | 59.8 | 54.0 | 32.0 | 3.8 | 43.6 | 5.2 | 57.3 | ||
| 50 | 408 | 220 | 306 | 57.2 | 49.5 | 30.0 | 4.0 | 33.7 | 3.8 | 56.3 | ||
| LSD | 3.60 | 3.30 | 3.60 | 2.40 | 2.30 | 1.80 | 0.18 | 1.00 | 0.18 | 1.60 | ||
| June | 20 | 429 | 197 | 287 | 63.1 | 52.5 | 29.0 | 2.4 | 23.0 | 2.9 | 42.3 | |
| S | 30 | 431 | 196 | 286 | 60.6 | 40.0 | 29.8 | 2.5 | 40.2 | 4.0 | 45.0 | |
| 40 | 433 | 190 | 284 | 56.4 | 42.3 | 32.5 | 2.5 | 31.0 | 3.9 | 48.8 | ||
| 50 | 430 | 191 | 279 | 61.5 | 51.0 | 31.5 | 2.4 | 26.9 | 4.1 | 47.0 | ||
| LSD | 1.84 | 1.60 | 6.20 | 2.80 | 2.10 | 2.20 | 0.16 | 1.90 | 0.07 | 2.30 | ||
| 20 | 426 | 200 | 288 | 62.3 | 46.3 | 32.8 | 3.8 | 24.1 | 3.2 | 63.5 | ||
| T | 30 | 429 | 206 | 283 | 61.7 | 57.5 | 32.8 | 3.9 | 42.5 | 5.1 | 54.8 | |
| 40 | 433 | 198 | 289 | 54.4 | 49.8 | 33.0 | 4.1 | 34.2 | 4.2 | 54.8 | ||
| 50 | 437 | 195 | 279 | 62.1 | 50.0 | 28.8 | 3.8 | 34.6 | 3.2 | 49.8 | ||
| LSD | 1.60 | 2.90 | 7.60 | 2.80 | 2.40 | 2.20 | 0.22 | 1.50 | 0.07 | 2.00 |
Means were separated by Fisher’s least significant difference LSD (0.05). Suc, sucrose; stac, stachyose; and glu, glucose.