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Table 3 Mortality percentages of M. incognita J2 as influenced by dry leaves ethanolic extracts of selected medicinal plants at different dilutions

From: Screening the nematicidal potential of indigenous medicinal plant extracts against Meloidogyne incognita under lab. and greenhouse conditions

Ethanolic extract (X stock solution = 25,000 mg D.Wt./L) aMortality (%) Accumulative mortality bToxicity index Lethal concentrations (mg D.Wt./L)c
1:2 × (12,500 mg DW/L) 1:4 × (6250 mg DW/L) 1:8 × (3120 mg DW/L) LC50 LC90
Basil 55 74 51 180 0.5 4465 67721
Caraway 86 39 22 147 0.3 7118 16549
Chamomile 39 31 11 80 0.1 17799 71141
Common mint 71 63 17 151 0.3 7111 20271
Coriander 61 84 21 165 0.4 5929 16457
Dill 65 8 7 80 0.2 11376 19052
Geranium 83 88 57 229 0.8 2597 13139
Horsemint 57 17 10 84 0.2 12718 41034
Marjoram 65 94 61 221 0.7 3015 13889
Periwinkle 32 55 51 138 0.2 10410 149504
Rosemary 61 35 20 115 0.2 10623 39146
Solidago 49 94 67 210 1.0 2085 14702
Thyme 100 54 30 184 0.4 5533 13071
Check (tap water) 27 8 9     
  1. a\( \mathsf{Mortality}\%=\frac{\mathsf{Number}\ \mathsf{of}\ \mathsf{dead}\ \mathsf{J}\mathsf{2}\ \mathsf{in}\ \mathsf{a}\ \mathsf{treatment}}{\mathsf{Number}\ \mathsf{of}\ \mathsf{totals}\ \mathsf{tested}\ \mathsf{J}\mathsf{2}\ \mathsf{in}\ \mathsf{the}\ \mathsf{same}\ \mathsf{treatment}} \)
  2. b\( \mathsf{Toxicity}\ \mathsf{index}=\frac{\mathsf{LC50}\ \mathsf{of}\ \mathsf{the}\ \mathsf{highest}\ \mathsf{effective}\ \mathsf{extract}}{\mathsf{LC50}\ \mathsf{of}\ \mathsf{each}\ \mathsf{extract}} \)
  3. cmg D.Wt./L= milligram dry leaves per liter