Evaluation of Electrolysed Oxidizing Water for European Pear Rust Management on Pear (Pyrus cv. Conference)

Article Figures & Data

Table 1.

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.

Table 2.

Comparison of boscalid + pyraclostrobin and electrolysed oxidizing water on managing Gymnosporangium sabinae on Pyrus cv. Conference (2018).

Treatment	Leaf chlorophyll SPAD	Fruit yield (kg) tree	Rust incidence	Leaf rust severity
Water (control)	30.4a	12.6a	76.0c	2.5b
Electrolysed oxidizing water	36.1b	13.4a	27.0b	0.8a
Boscalid + pyraclostrobin (0.9 g/L)	36.8b	14.5a	10.0a	0.4a
Treatment	0.029	0.128	< 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.