Research Article

Chemical Constituents of Plectranthus tomentosa Extract and Its Control Effect on Tetranychus kanzawai

Table 2

The contact effect of Plectranthus tomentosa extract on Tetranychus kanzawai.

Concentration (mg/mL)Mortality rate (%) (mean ± SE)
Female adultLarvalEggs
24 h48 h24 h48 h

100061.11 ± 1.93bc66.67 ± 3.34bc64.44 ± 1.93bc66.67 ± 3.34bc72.22 ± 2.09c
10065.56 ± 1.93b67.78 ± 1.92b66.67 ± 3.33b70.00 ± 3.33b77.78 ± 2.09b
5077.77 ± 5.09a83.33 ± 3.34a82.22 ± 5.09a86.67 ± 3.34a85.56 ± 1.92a

Different lowercase letters in the same column revealed the significant difference with .