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Table 2 Effect of ethyl acetate extract on females of Tetranychus urticae (after 72 h exposure)

From: Myco-metabolites as biological control agents against the two-spotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae)

  Control 5 (mg/ml) 10 (mg/ml) 20 (mg/ml) 30 (mg/ml) F value LC50 (mg/ml) Slope
Aspergillus melleus
 Mean (no. of dead mites) ± SE 0.0e ± 0.0 3.67d ± 0.33 11.00c ± 1.15 14.33b ± 0.33 18.33a ± 1.67 65.74*** 10.27 2.738
 % of dead mites 0.0 18.33 55.00 71.67 91.67
Emericella nidulans
 Mean (no. of dead mites) ± SE 0.0d ± 0.0 1.67d ± 0.67 5.33c ± 0.88 14.00b ± 1.00 16.33a ± 0.33 115.31*** 14.68 3.052
 % of dead mites 0.0 8.33 26.67 70.00 81.67
Chaetomium globosum
 Mean (no. of dead mites) ± SE 0.0c ± 0.0 0.67c ± 0.67 1.33c ± 0.33 7.00b ± 1.15 15.33a ± 1.20 62.96*** 22.40 3.240
 % of dead mites 0.0 3.33 6.67 35.00 76.67
Aspergillus terreus
 Mean (no. of dead mites) ± SE 0.0c ± 0.0 0.33c ± 0.33 0.67c ± 0.33 4.00b ± 0.58 11.33a ± 0.33 171.83*** 33.05 2.898
 % of dead mites 0.0 1.67 3.33 20.00 56.67   
  1. Values are mean no. of dead mites ± standard error of three replicates. df = 10. Different letters in the same row indicate a significant difference according to Duncan’s multiple range test
  2. ***Values are significant at P = 0.05 levels