Table 4 Effect of two potassium salts at different concentrations and a fungicide on enzyme activities in strawberry leaves grown under field conditions
From: Resistance against phomopsis leaf blight disease induced by potassium salts in strawberry plants
Treatment | Concentration (%) | Enzyme activities | |||
|---|---|---|---|---|---|
Peroxidase | Chitinase | ||||
Potassium bicarbonate | – | Activity | Increase % | Activity | Increase % |
1.0 | 15.4 c | 71.1 | 4.5 d | 76.0 | |
1.5 | 18.5 b | 105.6 | 5.8 b | 132.0 | |
2.0 | 20.4 a | 126.7 | 6.0 a | 140.0 | |
Potassium phosphate | 1.0 | 16.0 c | 77.8 | 5.0 c | 50.0 |
1.5 | 19.2 b | 113.3 | 5.5 b | 120.0 | |
2.0 | 22.5 a | 150.0 | 6.2 a | 148.0 | |
Amstar (fungicide) | 1Â ml/l | 15.0 c | 66.7 | 5.0 c | 50.0 |
Untreated control | – | 9.0 d | 0.0 | 2.5 d | 0.0 |