Table 2 Effect of silicon and potassium, sodium and calcium silicates, and a fungicide on Phomopsis leaf blight disease of strawberry plants under field conditions

Silicon

Soil

1.3 c

56.7

Soil+ foliar

1.1 cd

63.3

Potassium silicate

Soil

0.8 de

73.3

Soil+ foliar

0.5 e

83.3

Sodium silicate

Soil

1.9 b

36.7

Soil+ foliar

1.5 c

50.0

Calcium silicate

Soil

0.8d

73.3

Soil+ foliar

0.4 e

86.7

Amstar (fungicide) 1 ml/l

foliar

0.6 de

80.0

Control

3.0 a

0.0