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Table 3 Efficacy of different biopesticides against eggs of Bemisia tabaci on cucumber under net house conditions during autumn cropping season (2018)

From: Efficacy of biopesticides against the whitefly, Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae), on parthenocarpic cucumber grown under protected environment in India

Treatment Concentrations
(ml/l)
Percent reduction over control in eggs of Bemisia tabaci per leaf *(mean ± SE) after different sprays
1st spray 2nd spray 3rd spray Overall reduction (%)
Beauveria bassiana (1 × 109 CFU/ml) 10 42.1 ± 2.2cd 65.1 ± 0.7e 81.8 ± 1.8c 63.0 ± 11.5a
15 46.5 ± 0.4c 67.7 ± 1.5de 83.4 ± 0.2c 65.9 ± 10.7a
Lecanicillium lecanii (1 × 109 CFU/ml) 10 41.3 ± 2.4cd 65.6 ± 1.3e 83.0 ± 0.3c 63.3 ± 12.1a
15 45.2 ± 1.1c 72.0 ± 1.2cd 85.1 ± 3.0c 67.4 ± 11.7a
Metarhizium anisopliae (1 × 108 CFU/ml) 10 37.7 ± 0.7d 61.6 ± 2.8e 81.3 ± 1.5c 60.2 ± 12.6a
15 40.8 ± 1.7cd 64.0 ± 1.0e 82.8 ± 1.7c 62.5 ± 12.1a
Neem Baan
(1% W/W)
10 59.3 ± 2.3b 77.4 ± 3.1bc 90.9 ± 2.3b 75.9 ± 9.2a
15 62.6 ± 3.9b 79.6 ± 1.5b 92.4 ± 2.0b 78.2 ± 8.6a
Malathion 50 EC 4.0 77.5 ± 2.9a 89.8 ± 2.8a 98.1 ± 1.9a 88.5 ± 6.0a
F values   35.5 22.2 10.2 0.8
P   < 0.001 < 0.001 < 0.001 0.6
  1. Percent reduction over control mean ± standard error of B. tabaci eggs recorded after different sprays for bioassays performed with different commercial strains. Treatment columns bearing different letters are significantly different from other treatments according to Duncan’s multiple range test (DMRT) (P = 0.05). Range of pretreatment population eggs = 3.3 to 5.4 eggs/leaf
  2. *Values represent means of 3 replicates