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Table 2 Field evaluation of SpobNPV strain NBAIR1 against Spilosoma obliqua on jute (pooled mean data for the years 2017 and 2018)

From: Characterization and field evaluation of tetrahedral and triangular nucleopolyhedrovirus of Spilosoma obliqua (SpobNPV) strain NBAIR1 against jute hairy caterpillar

Particulars

Pre-treatment

Larvae/plant days after spray

Reduction in larval population

3 DAS

4 DAS

7 DAS

3 DAS

4 DAS

7 DAS

SpobNPV (1.5 × 1012 OBs/ha) at 2 ml/l

36.25 ± 0.01

13.10c ± 0.03

9.75c ± 0.01

1.33c ± 0.00

68.92b ± 0.24

78.59b ± 0.01

93.16b ± 1.12

Bacillus thuringiensis Btk at 2 ml/l

35.50 ± 0.03

20.50b ± 0.00

13.25b ± 0.02

3.75b ± 0.02

51.36c ± 0.00

70.91c ± 0.30

80.71c ± 0.21

Profenophos 50 E.C. at 2 ml/l

37.00 ± 0.00

9.55d ± 0.01

4.55d ± 0.01

0.75d ± 0.01

77.34a ± 0.41

90.01a ± 0.25

96.14a ± 2.01

Control

38.00 ± 0.01

42.15a ± 0.00

45.55a ± 0.02

19.45a ± 0.01

0.00d ± 0.00

0.00d ± 0.00

0.00d ± 0.00

SE(d)

-

0.019

0.023

0.002

0.339

0.365

1.647

CD (P = 0.05)

-

0.044

0.051

0.004

0.739

0.803

3.628

  1. Means followed by different letters within a row indicate significant differences (P < 0.05; LSD)