Skip to main content

Table 3 Efficacy of botanical oils against Maconellicoccus hirsutus under laboratory condition

From: Management of the grape mealy bug, Maconellicoccus hirsutus (Green), using entomopathogenic fungi and botanical oils: a laboratory study

Treatment

Treatment details

Mortality of nymphs (%)

3DAT

5DAT

7DAT

9DAT

11DAT

15DAT

T1

Azadirachtin 10,000ppm at 1ml/l

44.79e (41.99)

54.38e (47.49)

73.96cd (59.32)

76.04c (60.68)

79.17d (62.86)

82.92f (65.61)

T2

Neem oil at 10 ml/l

56.46bcd (48.69)

67.92bc (55.49)

76.88bc (61.31)

85.00b (67.31)

92.92b (74.59)

94.17cd (76.12)

T3

Neem oil at 15 ml/l

60.00b (50.76)

71.46b (57.72)

78.13bc (62.15)

87.92b (69.74)

93.96b (75.82)

96.67b (79.97)

T4

IIHR neem soap at 10g/l

55.00cd (47.85)

62.09d (51.98)

80.42b (63.79)

86.05b (68.12)

90.21c (71.81)

92.30de (73.93)

T5

Pongamia oil at 10 ml/l

15.84h (23.42)

23.55h (29.00)

31.88g (34.33)

40.42f (39.46)

46.88g (43.19)

52.09i (46.18)

T6

Pongamia oil at 15 ml/l

20.63g (26.96)

24.79h (29.82)

32.71g (34.86)

39.79f (39.09)

48.54g (44.15)

53.34i (46.89)

T7

Neem oil at 5 ml /l + Pongamia oil at 5 ml/l

54.17d (47.37)

66.88bcd (54.86)

70.00d (56.86)

73.34c (58.98)

81.67d (64.63)

90.84e (72.39)

T8

Neem oil at 10 ml /l + Pongamia oil at 10 ml/l

59.17bc (50.27)

69.38bc (56.44)

75.83bcd (60.55)

86.25b (68.28)

91.88bc (73.46)

95.42bc (77.92)

T9

FORS at 5 ml /l

30.00f (33.18)

32.50g (34.74)

39.80f (39.09)

49.17e (44.51)

55.00f (47.85)

59.79h (50.63)

T10

FORS at 10 ml /l

51.67cd (48.09)

55.42e (48.09)

61.25e (51.49)

64.38d (53.38)

72.09e (58.11)

75.42g (60.26)

T11

FORSat 15 ml /l

42.29e (40.55)

42.71f (40.79)

63.55e (52.84)

67.08d (54.98)

71.46e (57.70)

77.30g (61.52)

T12

Neem oil + pongamia oil + FORS at 5 ml /l each

53.13d (46.77)

65.42cd (53.96)

72.92cd (58.67)

77.71c (61.83)

78.96d (62.70)

84.79f (67.03)

T13

Imidacloprid 17.8SL at 0.25ml/l

71.67a (57.84)

82.29a (65.13)

91.88a (73.46)

95.84a (78.25)

97.29a (80.71)

99.17a (84.80)

T14

Water + wetting agent at 0.25ml/l each

1.25i (6.42)

1.67i (7.39)

1.88h (7.87)

2.29g (8.68)

2.92h (9.82)

3.75j (11.16)

T15

Water alone

0.00j (0.00)

1.04i (5.79)

1.25h (6.42)

1.25g (6.42)

1.46i (6.90)

1.88k (7.87)

T16

Untreated control

0.00j (0.00)

0.00j (0.00)

0.00i (0.00)

0.00h (0.00)

0.00j (0.00)

0.00l (0.00)

  1. Note: Twenty mealybug nymphs per sprout were released and considered as pre-treatment count (20 × 8 × 3 = 480 mealybugs per treatment). Figures in the parentheses are arcsine transformed values; the mean values with the same alphabetical superscripts are statistically non-significant as per DMRT
  2. DAT days after treatment, FORS Fish Oil Rosin Soap