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Table 4 Infestation reduction percentage of cotton bollworms during two seasons

From: Influence of some insecticide sequences on the injurious insect- pests of cotton plants

Treatments

Infestation reduction % of four sprays

General mean

1

2

3

4

 

Season 2017

 Sequence 1

Profenofos

72.7b

Profenofos

80.7b

Cypermethrin

74.0b

Cypermethrin

74.3b

75.7c

 Sequence 2

Spinosad

87.0a

Profenofos

90.5a

Spinosad

81.4b

Carbosulfan

84.2a

85.8a

 Sequence 3

Cypermethrin

86.8a

Profenofos

91.2a

Cypermethrin

83.7a

Carbosulfan

84.7a

86.6a

 Sequence 4

Carbosulfan

80.5a

Carbosulfan

72.0c

Cypermethrin

80.0a

Cypermethrin

77.2c

76.7c

 Sequence 5

Acetamiprid

93.1a

Cypermethrin

87.4a

Chlorfenapyr

89.7a

Profenofos

89.1a

89.8a

 Sequence 6

Profenofos

87.8a

Spinosad

83.9a

Cypermethrin

81.7a

Carbosulfan

77.9c

82.8a

 Sequence 7

Cypermethrin 93.7a

Emmamectin benzoate

95.2a

Indoxacarb

93.7a

Profenofos

92.1a

93.7a

Season 2018

 Sequence 1

Profenofos

76.0b

Profenofos

77.9b

Cypermethrin

72.0c

Cypermethrin

75.0c

75.2c

 Sequence 2

Spinosad

92.9a

Profenofos

88.9a

Spinosad

81.3ab

Carbosulfan

86.5a

87.4a

 Sequence 3

Cypermethrin

88.7a

Profenofos

88.5a

Cypermethrin

82.4ab

Carbosulfan

85.2a

86.2a

 Sequence 4

Carbosulfan

81.1ab

Carbosulfan

68.4c

Cypermethrin

80.0a

Cypermethrin

77.2c

76.7c

 Sequence 5

Acetamiprid

94.7a

Cypermethrin

88.1a

Chlorfenapyr

91.2a

Profenofos

91.1a

91.3a

 Sequence 6

Profenofos

90.6a

Spinosad

81.1ab

Cypermethrin

84.1a

Carbosulfan

81.1ab

84.2a

 Sequence 7

Cypermethrin

94.2a

Emmamectin benzoate

96.2a

Indoxacarb

95.3a

Profenofos

93.7a

94.9a

  1. Means in the same column followed by the same letter are not significant at P < 0.05