Table 2.

Probit analysis of nematicidal activity against second-stage juveniles (J2) of Meloidogyne incognita

Sample	Exposure time (h)	LC50 (µg/mL)	95% CI (LL–UL)	Probit parameters	Model fit
CAO	24	(> 1000)	155.33–9700.25	β = 1.069, Intercept =  − 3.30	χ2 = 0.83, p = 0.361
	48	722.01	127.72–4081.44	β = 1.25, Intercept =  − 1.25	χ2 = 0.38, p = 0.536
	72	498.69	98.98–2512.41	β = 1.33, Intercept =  − 3.60	χ2 = 0.04, p = 0.838
	96	455.84	455.84–1504.986	β = 1.84, Intercept =  − 0.489	χ2 = 0.08, p = 0.769
CSNP	24	290.64	142.49–592.83	β = 3.68, Intercept =  − 9.07	χ2 = 0.01, p = 0.922
	48	239.53	108.55–528.54	β = 1.54, Intercept =  − 0.214	χ2 = 1.54, p = 0.21
	72	133.72	40.30–443.711	β = 2.59, Intercept =  − 5.51	χ2 = 4.26, p = 0.039
	96	12.88	0.42–388.98	β = 1.06, Intercept =  − 1.18	χ2 = 0.93, p = 0.334
Nimitz	24	259.43	85.67–785.65	β = 2.12, Intercept =  − 5.12	χ2 = 0.00, p = 0.987
	48	112.54	25.78–491.167	β = 1.91, Intercept =  − 3.93	χ2 = 0.64, p = 0.421
	72	33.23	2.67–412.28	β = 1.29, Intercept =  − 1.97	χ2 = 0.02, p = 0.872
	96	0.046	0.00–337.23	β = 0.44, Intercept = 0.59	χ2 = 0.17, p = 0.675