Evaluation of the resistance of three maize varieties to Spodoptera frugiperda (J.E. Smith) and Ostrinia nubilalis Hübner in the Tonkpi region (Man, Côte d’Ivoire)

Bulletin of the National Research Centre

Table 1 Attack rate and damage intensity index on maize plants by Spodoptera frugiperda larvae

Maize varieties	Average number of healthy plants/10	Average number of damaged plants/10	Damage rate (%)	Damage intensitification index (I) (%)
EV8766-SR-MRP	7.67a ± 1.633	2.33b ± 0.633	23.33 b	7.50b
PR9131-SR	5.67b ± 1.633	4.33a ± 1.633	43.33a	15,42a
CEW-SR	4.50b ± 0.548	5.50a ± 0.547	55.00 a	21.67a
F	8.195	8.195	8.195	10.648
P	0.004	0.004	0.004	0.001

SE = Standard error.
The means assigned to the same letter within the same column are not significantly different (Fisher test (LSD), p < 5%).