Tableau 1
Analyse combinée de la variance dans le dispositif en split plot comparant sept cultures en association avec le sorgho et en culture pure sur trois années d’expérimentation.
Combined analysis of variance in split plot design comparing seven crops in association with sorghum and in pure stand over three years of experimentation.
| Sorgho | Espèces compagnes | |||
|---|---|---|---|---|
| Rendement | Rendement | Log(rendement) | Log(rendement) | |
| Grain | Biomasse | Grain | Biomasse | |
| Effet | Pr > F | Pr > F | Pr > F | Pr > F |
| 1 mode de culture | < 0,0001 | < 0,0001 | < 0,0001 | < 0,0001 |
| 2 légumineuse | 0,0193 | 0,4803 | < 0,0001 | 0,034 |
| 3 espèce (légumineuse) | 0,9849 | 0,4136 | < 0,0001 | < 0,0001 |
| 1 × 2 | – | – | 0,8242 | 0,5232 |
| 1 × 3 | – | – | 0,0538 | 0,4146 |
| 4 année | < 0,0001 | < 0,0001 | < 0,0001 | < 0,0001 |
| rep (année) | 0,0059 | 0,0002 | 0,7067 | 0,0663 |
| 1 × 4 | 0,5611 | 0,0032 | 0,3621 | 0,5405 |
| 2 × 4 | 0,4198 | 0,9034 | 0,0002 | < 0,0001 |
| 3 × 4 | 0,1558 | 0,421 | < 0,0001 | 0,0211 |
| 1 × 2 × 4 | – | – | 0,1217 | 0,1199 |
| 1 × 3 × 4 | – | – | 0,3506 | 0,0617 |
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