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Table 2 Bio-efficacy of BKN20 5%AS in controlling shoot damage of tea plants from TMB in large-scale field study

From: Beauveria bassiana: as a potential microbial biocontrol agent for tea mosquito bug, Helopeltis theivora Waterhouse (Hemiptera: Miridae) in Dooars and Darjeeling, India

Treatments Concentration (ha) Darjeeling Dooars
Pre-spray
Shoot damage incidence (%)#
Shoot damage reduction (%)# Pre-spray
Shoot damage incidence (%)#
Shoot damage reduction (%)#
BKN20 5%AS 600 ml$ 23.1 66.4b 27.3 69.3b
  800 ml$ 21.5 68.9b 27.0 73.0bc
  1000 ml$ 21.3 79.8a 26.6 79.4a
  1200 ml$ 20.9 81.6a 28.0 81.9a
Beauveria bassiana 1.15%WP* 2500 g 23.1 62.5c 28.5 66.6b
Thiamethoxam 25%WG 120 g 20.4 66.7b 28.5 70.1b
F value 8.4 9.5 10.2 12.3
p value   < 0.0001 < 0.0001 < 0.0001 < 0.0001
  1. #Pre-spray shoot damage incidence (%) and shoot damage reduction (%) values for each location are the mean of two consecutive seasons
  2. $Containing 2 × 107 conidia/ml, Pre-spray shoot damage incidence (%) are the mean of three replications ± SE of leaf plucking before treatments and shoot damage reduction (%) are the mean of three replications ± SE obtained from four rounds of leaf plucking after treatments at weekly interval for each season. Values in the same column with different superscript are significantly different with each other at p < 0.05 by Tukey’s post-hoc Honestly Significant Difference (HSD) test
  3. *Market product