Table 4. Activity^a of Compounds 1–10 against S. frugiperda First Instar Larvae.

compound	% reduction in growthb relative to control	% mortalityc	% reduction in growth at lower “natural” concentrationsd relative to control
1	86	0
2	86	0
3	75	6
4	90	37	6
5	88	0
6	50	0
7	94	66	56
8	91	33	18
9	81	0
10	78	0
rotenone			57

^aA pinto bean diet disk was the sole food source provided. Control disks were treated only with acetone, the solvent used for the test materials. Duration of the assay was 3 days.

^bExperimental diet disks containing 1% compound (10 000 ppm, or 10 μg/mg disk).

^cWhere mortality occurs, reduction in growth and mortality are typically decreased (but not measured) due to cannibalism of dead insects by survivors.

^dTest concentrations: 4 = 0.08% (831 ppm), 7 = 0.016% (163 ppm), 8 = 0.0023% (23 ppm), rotenone = 0.016% (163 ppm). No mortality was observed at these concentrations.