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Table 3 In vitro bioefficacy of Beauveria bassiana against Helopeltis theivora in combination with different adjuvants

From: Role of beneficial fungi in managing diseases and insect pests of tea plantation

Treatment

Mortality of 2nd instar nymphs of Helopeltis theivora when exposed to Beauveria bassiana after days of spray*

5 days

10 days

T1, Beauveria bassiana + surfactant (Tween 20)

67.5 (56.1 ± 5.7)

17.5 (21.6 ± 7.4)

T2, B. baasiana + humectant (glycerol)

70.0 (57.1 ± 4.3)

25.0 (29.3 ± 4.5)

T3, B. bassiana + surfactant + humectant

75.0 (60.1 ± 1.9)

27.5 (31.5 ± 1.7)

T4, B. bassiana + UV protectant (crude sugar)

77.5 (62.1 ± 3.5)

30.0 (33.0 ± 2.6)

T5, B. bassiana

62.5 (52.5 ± 3.9)

20.0 (26.2 ± 3.0)

CD

N.S.

NS

SE (d)

5.7

6.1

SE (m)

4.1

4.3

CV

14.1

20.4

  1. *Mean of 3 replications, values in parenthesis are angular transformed with ± SE