Table 2.
Values of alatae induction at each developmental stage of Rhopalosiphum maidis under five densities (Chi-square Contingency Table Analysis).
| Instar | df | χ2 | P |
|---|---|---|---|
| 1st | 4 | 24.06 | <0.0001 |
| 2nd | 3 | 9.07 | 0.0284 |
| 3rd | 3 | 1.21 | 0.7504 |
| 4th | 2 | 0.96 | 0.6190 |
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