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Table 1 Efficacy of different antagonists on powdery mildew of Thompson grapevine disease parameters (incidence and severity) under Egyptian field conditions during 2016 and 2017 seasons

From: Evaluation of some biocontrol agents to control Thompson seedless grapevine powdery mildew disease

Tested antagonists Disease incidence % Disease severity %
2016 2017 Mean Efficacy* 2016 2017 Mean Efficacy*
T. harzianum (T.s.) 17.1 17.3 17.2 70.19 6.1 6.5 6.3 71.23
T. viride (T.v.) 18.3 18.5 18.4 68.11 8.7 8.9 8.8 59.82
T. hamatum (T.h.) 22.4 22.6 22.5 61.01 11.3 11.5 11.4 47.95
T.s + T.v. 14.1 14.6 14.35 75.13 4.4 4.6 4.5 79.45
T.s + T.h. 16.2 16.6 16.4 71.58 5.5 5.8 5.65 74.20
T.v + T.h. 21.3 21.7 21.5 62.74 9.6 10.0 9.8 55.25
T.s. + T.v. + T.h. 11.3 11.6 11.45 80.16 2.1 2.3 2.2 89.95
Micronic sulfur (MS) 24.4 25.2 24.8 57.02 12.7 13.0 12.85 41.32
Blight stop (T.s. + T.v. + T.h.) + MS 13.1 13.3 13.2 77.12 3.3 3.7 3.5 84.02
Control untreated 57.1 58.3 57.7 00.00 21.6 22.2 21.9 00.00
L S D at 0.05 1.60 0.09    0.11 0.08   
  1. * % Efficacy = ((control-treatment)/control)×100