Table 5
Importance of each variable selected by PLS and submitted to the Random Forest model (rank and absolute value of importance between brackets): rapeseed.
| Factors | DDM protein concentration (18 variables) | Oil concentration to standards (21 variables) |
|---|---|---|
| Terres Inovia (TI) development regions | 3 (40.3) | 3 (36.2) |
| Soil texture | 2 (42.5) | 2 (36.8) |
| Varietal characteristics | ||
| •Potential DDM protein concentration | 1 (45.9) | 14 (11.1) |
| •Potential oil concentration to standards | 13 (12.9) | 4 (35.8) |
| •Type of variety | 18 (6.2) | 21 (5.5) |
| •Maturity earliness | 16 (7.5) | 19 (8.2) |
| •Flowering earliness | 12 (13.1) | 18 (8.3) |
| •Stem elongation | 15 (7.6) | 17 (8.6) |
| •Plant height | 17 (6.3) | 20 (7.5) |
| N Fertilization: | ||
| •Deviation of applied N rate from the optimum (X rate) | 6 (34.5) | 10 (24.7) |
| •Fraction of N amount applied late from the E stage | 14 (8.2) | 16 (9.2) |
| Sowing date | 5 (35.6) | 7 (26.7) |
| Grain yield to standards (at 9% moisture and 2% of waste) | 8 (31.2) | |
| Radiation (PAR) | ||
| •phase 6 | 10 (28.2) | 9 (25.1) |
| •phase 10 | 6 (29.0) | |
| Climatic deficit (P-PET) | ||
| •phase 7 - flowering | 8 (25.3) | |
| •phase 8 - grain filling | 4 (36.5) | 1 (37.1) |
| •phase 9 (spring recovery to G1) | 7 (34.1) | |
| •phase 11 (spring recovery: C2 to D1) | 5 (30.6) | |
| •phase 12 (bud formation: D2 to E) | 11 (21.6) | |
| with Tmax > 30°C | ||
| •phase 17 (grain filling: G2 to G4) | 9 (28.2) | 12 (19.5) |
| Number of days with Tmax > 28°C | ||
| •phase 15 (mid-flowering) | 11 (21.3) | 15 (10.4) |
| •phase 16 (G1) | 13 (13.1) |
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