Pathogenicity of entomopathogenic nematodes against the new invasive fall armyworm, Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae)

Table 2 Pathogenicity of Heterorhabditis indica nematode against different larval instars of Spodoptera frugiperda at different concentrations (IJs/ml) and exposure times

Larval instars	Exposure time (h)	LC₅₀ (IJs/larva)	Slope ± SE	Coefficients (intercept)	R²	Correlations	P-value
2nd instar	72 h	506.784	0.032 ± 0.01	5.208	0.763	0.874	0.05
3rd instar	72 h	713.776	0.011 ± 0.01	2.382	0.228	0.478	0.416
3rd instar	96 h	756.681	0.013 ± 0.018	94.098	0.142	0.376	0.028
4th instar	72 h	2442.300	0.019 ± 0.008	4.4667	0.6187	0.786	0.115
	96 h	71.639	0.003 ± 0.001	34.375	0.034	0.185	0.049
	120 h	27.616	0.023 ± 0.01	55.554	0.580	0.762	0.027
5th instar	96 h	184.282	0.006 ± 0.01	18.749	0.050	0.581	0.717
5th instar	120 h	269.716	0.026 ± 0.02	43.453	0.338	0.581	0.304
6th instar	120 h	635.133	0.049 ± 0.004	1.388	0.776	0.881	0.048
	164 h	538.899	0.011 ± 0.012	25	0.193	0.440	0.458
	188 h	330.322	0.151 ± 0.014	8.33	0.992	0.996	0.05