Comparison of boscalid + pyraclostrobin and electrolysed oxidizing water on managing Gymnosporangium sabinae on Pyrus cv. Conference (2017).
| Treatment | Leaf chlorophyll SPAD | Fruit yield (kg) tree | Rust incidence | Leaf rust severity |
|---|---|---|---|---|
| Water (control) | 29.9a | 14.5a | 72.0c | 2.7b |
| Electrolysed oxidizing water | 35.5b | 15.9a | 31.0b | 1.0a |
| Boscalid + pyraclostrobin (0.9 g/L) | 37.0b | 15.7a | 12.0a | 0.5a |
| Treatment | 0.032 | 0.224 | < 0.001 | < 0.001 |
Lower case letters indicate significant differences between means for each evaluation date by LSD (P = 0.05).
Rust incidence = total number of fruit and leaves with rust symptoms/number of leaves (100) and fruit (30) examined.
SPAD values mean of 10 trees, 25 leaves per tree.
Fruit yield mean of 10 trees.
Leaf rust severity scale: 0 = no rust observed; 1 = < 5% of leaves affected and no aesthetic impact; 2 = 5% to 20% of leaves affected, with some yellowing but little or no defoliation; 3 = 21% to 50% of leaves affected, significant defoliation and/or leaf yellowing; 4 = 51% to 80% of leaves affected, severe foliar discolouration; 5 = 81% to 100% of leaves affected, with 90% to 100% defoliation.