Tableau 2
Proportion des mines présentant des dépouilles de larves de Heliocheilus albipunctella De Joannis présentant des traces de parasitisme de Habrobracon hebetor Say par épi infesté en 2015 et 2016.
Percentage of mines presenting dead larvae of Heliocheilus albipunctella De Joannis infected by Habrobracon hebetor Say in 2015 et 2016.
| Proportion des mines de la MEM portant des larves parasitées par H. hebetor | |||
|---|---|---|---|
| Localités | Traitement | Année 2015 | Année 2016 |
| Dosso | Villages de lâcher | 40,48 ± 1,61a | 42,89 ± 2,34a |
| Villages témoins | 26,75 ± 1,86b | 2,80 ± 1,08b | |
| Test t | t = 5,43 ; dl = 1081 ; P ≤ 0,001 | t = −11,75 ; dl = 481 ; P ≤ 0,001 | |
| Maradi | Villages de lâcher | 48,45 ± 2,17a | 49,36 ± 3,18a |
| Villages témoins | 46,13 ± 9,83a | 0,23 ± 0,23b | |
| Test t | t = 0,30 ; dl = 529 ; P = 0,76 | t = −14,09 ; dl = 466 ; P ≤ 0,001 | |
| Tahoua | Villages de lâcher | 26,17 ± 1,27a | 28,29 ± 1,52a |
| Villages témoins | 6,42 ± 1,53b | 3,34 ± 1,63b | |
| Test t | t = 9,98 ; dl = 2121 ; P ≤ 0,001 | t = −9,78 ; dl = 870 ; P ≤ 0,001 | |
| Tillabéry | Villages de lâcher | 26,17 ± 1,17a | 39,01 ± 1,80a |
| Villages témoins | 8,91 ± 1,26b | 1,78 ± 0,66b | |
| Test t | t = 8,35 ; dl = 1557 ; P ≤ 0,001 | t = −13,17 ; dl = 706 ; P ≤ 0,001 | |
| Zinder | Villages de lâcher | 44,95 ± 7,33a | 31,48 ± 1,92a |
| Villages témoins | 12,91 ± 1,86b | 3,54 ± 1,28b | |
| Test t | t = 5,99 ; dl = 420 ; P ≤ 0,001 | t = −9,25 ; dl = 782 ; P ≤ 0,001 | |
| Moyenne | Villages de lâcher | 33,17 ± 0,75a | 35,96 ± 0,91a |
| Villages témoins | 12,58 ± 0,93b | 2,40 ± 0,53b | |
| Test t | t = 17,06 ; dl = 5716 ; P ≤ 0,001 | t = −24,80 ; dl = 3315 ; P ≤ 0,001 | |
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