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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)