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Table 3 Mortality percentages of M. incognita juveniles treated with different concentrations of the essential oils (Data are means of 5 replicates)

From: Identification of chemical components from essential oils and aqueous extracts of some medicinal plants and their nematicidal effects on Meloidogyne incognita

Plants

Concentrations of the essential oils (ppm)

8000

4000

2000

1000

500

250

125

62.50

Achillea wilhelmsii

100(0)a*

100(0)a

43.30(8.05)b

22.70(1.67)c

5.30(1.67)f

0.00(0)g

0.00(0)g

0.00(0)g

Tanacetum polycephalum

100(0)a

100(0)a

44.30(3.57)b

22.70(2.17)c

6.00(1.41)f

0.00(0)g

0.00(0)g

0.00(0)g

Teucrium polium

100(0)a

100(0)a

18.00(3.57)d

12.70(2.16)e

0.00(0)g

0.00(0)g

0.00(0)g

0.00(0)g

Control (distilled water)

0.00(0)g

0.00(0)g

0.00(0)g

0.00(0)g

0.00(0)g

0.00(0)g

0.00(0)g

0.00(0)g

  1. Data followed in each column by the same letters are not significantly different according to Duncan’s multiple range test (P = 0.05)
  2. *Figures in the parentheses indicate standard error