Table 3. Plant species, mean effective concentrations inhibiting hatchability of Haemonchus placei eggs by 50% (EC₅₀) and 90% (EC₉₀), confidence intervals, curve slopes (HillSlope) and coefficient of determination (R²) obtained from serial evaluations of 10 concentrations.

Species	EC50 (mg/mL)	95% CI	HillSlope	R2	EC90 (mg/mL)	95% CI	HillSlope	R2
Angelonia hirta	2.61	1.98–3.43	1.08	0.89	6.87	5.34–8.85	4.90	0.95
Aspilia latissima	1.28	0.99–1.66	1.56	0.88	2.48	1.83–3.34	7.03	0.98
Centratherum punctatum	12.42	10.19–15.13	1.54	0.93	42.07	23.17–76.36	1.99	0.95
Dioidia kuntzei	2.60	2.33–2.91	2.92	0.96	4.75	3.90–5.77	4.56	0.96
Echinodorus paniculatus	6.43	5.36–7.72	1.30	0.94	21.45	14.36–32.04	2.07	0.97
Hyptis brevipes	3.34	3.04–3.66	3.03	0.97	5.71	5.10–6.40	4.70	0.99
Hyptis mutabilis	2.43	1.98–2.98	1.59	0.91	5.51	4.69–6.47	4.04	0.98
Ipomoea chiliantha	0.54	0.35–0.82	1.03	0.73	1.19	0.19–7.11	15.49	0.98
Lantana canescens	0.75	0.46–1.22	1.46	0.43	1.70	0.71–4.09	8.35	0.98
Sebastiana hispida	1.88	1.64–2.15	3.86	0.93	2.72	2.13–3.46	7.07	0.98
Handroanthus serratifolius	0.83	0.72–0.96	2.88	0.83	1.94	1.25–3.01	3.16	0.88
Tocoynea formosa	10.08	5.55–18.18	0.58	0.64	14.52	4.98–42.34	2.99	0.74
Vitex cymosa	13.13	6.53–26.38	0.45	0.57	174.60	1.61–18915	1.29	0.78
Thiabendazole	2 × 10−6	1.9 × 10−6–2.2 × 10−6	1.68	0.98	6 × 10−6	4 × 10−6–9 × 10−6	1.26	0.98