Table 4.

Mortality (%) of M. incognita J2 after 4 to 24 h exposures to 125–1000 µg mL⁻¹ solutions of the saponin extract from five different Medicago species (means ± SE).

Concentration	Exposure Time (hours)
(µg mL−1)	4	8	16	24
	M. heyniana
125	0.8 ± 0.2	0.9 ± 0.2	46.4 ± 1.7	1.7 ± 0.3
250	1.4 ± 0.4	1.5 ± 0.6	2.3 ± 0.4	2.0 ± 0.6
500	1.5 ± 0.5	3.3 ± 0.9	46.0 ± 3.9	90.1 ± 0.4
1000	1.3 ± 0.3	89.8 ± 3.0	91.1 ± 2.3	97.9 ± 0.3
LC50	≥	798	521	353
	M. hybrida
125	1.6 ± 0.4	2.8 ± 0.3	3.4 ± 0.4	3.4 ± 0.2
250	2.4 ± 1.0	3.4 ± 0.2	3.6 ± 0.2	3.7 ± 0.2
500	2.4 ± 0.6	23.6 ± 2.1	95.9 ± 1.0	95.1 ± 0.2
1000	3.4 ± 0.9	88.1 ± 3.0	96.8 ± 0.5	95.8 ± 0.4
LC50	≥	612	353	363
	M. lupulina
125	0.5 ± 0.2	2.7 ± 0.4	3.3 ± 0.4	3.5 ± 0.2
250	0.5 ± 0.3	3.7 ± 0.5	5.8 ± 0.6	6.1 ± 0.4
500	4.3 ± 0.5	5.2 ± 0.4	82.2 ± 1.7	89.2 ± 0.3
1000	7.8 ± 1.0	11.5 ± 2.0	89.3 ± 3.1	90.2 ± 1.8
LC50	≥	≥	422	404
	M. murex
125	1.4 ± 0.3	1.9 ± 0.7	1.9 ± 0.3	2.1 ± 0.5
250	1.5 ± 0.4	2.0 ± 0.6	2.2 ± 0.7	2.8 ± 0.4
500	2.0 ± 0.6	91.3 ± 3.6	91.4 ± 3.0	92.1 ± 0.2
1000	2.7 ± 1.0	92.3 ± 1.4	96.0 ± 0.5	95.5 ± 0.6
LC50	≥	414	383	385
	M. truncatula
125	0.9 ± 0.2	1.6 ± 0.4	2.0 ± 1.5	4.4 ± 0.4
250	1.1 ± 0.1	4.7 ± 0.3	4.8 ± 0.1	4.7 ± 0.2
500	1.2 ± 0.2	33.3 ± 3.8	90.4 ± 1.8	90.6 ± 0.3
1000	2.7 ± 1.1	38.3 ± 1.3	91.4 ± 4.4	95.5 ± 1.8
LC50	≥	1098	416	360
Oxamyl (1 mL L−1)	2.8 ± 0.3	40.0 ± 1.0	88.2 ± 0.5	94.5 ± 0.7
Water	0.0	0.0	0.0	0.0
LSD 0.05	1.7	4.7	5.0	1.9