Table 4.
Mean dry matter yield and macronutrient extraction by the plants, in function of the length of the area, for the different treatments to which they were submitted during the 3 years of experimentation.
| Lenght (m) | Mean | |||||||
|---|---|---|---|---|---|---|---|---|
| 5 | 10 | 15 | 20 | 25 | 30 | 35 | ||
| Treatments | DMyield (Mg ha−1 year−1) | |||||||
| TWN | 20.8 bc | 21.4 bc | 24.2 ab | 21.4 b | 25.2 a | 22.6 b | 19.8 b | 22.2 b |
| TWA | 17.9 c | 17.0 c | 18.4 b | 18.4 b | 16.2 b | 16.6 b | 17.9 b | 17.5 b |
| TFN | 24.2 ab | 23.8 ab | 23.1 ab | 21.3 b | 20.3 b | 15.0 b | 13.7 c | 20.2 b |
| TFA | 29.4 a | 30.6 a | 28.7 a | 29.6 a | 29.9 a | 29.6 a | 31.5 a | 29.9 a |
| Treatments | N (kg ha−1 year−1) | |||||||
| TWN | 334 b | 380 b | 384 b | 409 b | 361 b | 384 b | 444 b | 388 bc |
| TWA | 394 b | 315 b | 349 b | 281 c | 276 b | 172 c | 329 c | 301 c |
| TFN | 551 a | 673 a | 471 b | 445 b | 343 b | 250 c | 193 d | 404 b |
| TFA | 640 a | 704 a | 703 a | 697 a | 564 a | 811 a | 690 a | 688 a |
| Treatments | P (kg ha−1 year−1) | |||||||
| TWN | 63.5 bc | 72.1 c | 72.8 c | 71.5 c | 59.8 b | 58.9 b | 65.8 b | 66.8 bc |
| TWA | 58.7 c | 56.4 d | 77.7 c | 44.0 d | 51.7 b | 31.0 c | 48.0 c | 52.3 c |
| TFN | 78.1 a | 110 a | 89.7 b | 89.2 b | 53.1 b | 51.6 b | 34.4 d | 70.7 b |
| TFA | 74.8 ab | 97.3 b | 124 a | 110 a | 87.5 a | 102 a | 115 a | 102 a |
| Treatments | K (kg ha−1 year−1) | |||||||
| TWN | 284 c | 264 b | 353 b | 323 b | 386 b | 352 b | 227 b | 311 b |
| TWA | 264 c | 240 b | 229 c | 272 b | 117 d | 224 c | 190 b | 227 b |
| TFN | 354 b | 319 b | 317 b | 303 b | 298 c | 194 c | 197 b | 283 b |
| TFA | 493 a | 541 a | 445 a | 520 a | 501 a | 509 a | 551 a | 508 a |
Treatments with the same letter in the column have no significant difference according to the Tukey test (p < 0.05, n = 15). TWN—Irrigation with water, without alternating the application position in the furrows; TWA—Irrigation with water, with alternation in the application position in the furrows; TFN—Fertigation treatment with RS, without alternation in the application position in the furrows; TFA—Fertigation treatment with RS, with alternation in the application position in the furrows.