Table 3.

The influence of penconazole and chitin/chitosan-based soil amendments on pathogen severity of pear scab (Venturia pirini) on Pyrus communis ‘Conference’ (pear ‘Conference’) under field conditions^{^a}.

Treatment	Leaf scab severity^{^b}	Fruit scab severity^{^c}	SPAD	F_V/F_M	PI_ABS	Fruit yield (kg)
Control (water)	3.5c	1.8b	36.4a	0.828a	7.47ab	8.44a
Penconazole	2.0a	1.0a	42.4b	0.834a	9.92c	10.80c
Chitin (1.0%)	2.1a	1.1a	44.1b	0.832a	9.96c	10.10abc
Chitosan (1.0%)	2.2a	1.0a	42.0b	0.832a	10.1c	10.56bc
Crab meal	3.0b	1.7b	41.9b	0.830a	7.65ab	8.92ab
Liquid chitosan	2.4a	1.3a	42.8b	0.834a	9.07bc	8.94ab
Agrinos 5-0-0	3.5c	1.9b	37.6a	0.832a	6.84a	9.24abc
Significance of Treatment (T)	< 0.001	< 0.001	< 0.001	< 0.445	< 0.001	< 0.001

^aNumbers within a column followed by a common letter are not significantly different according to Tukey’s Honest Significant Difference test (P = 0.05).
↵^bMean of 50 leaves from 5 trees (10 leaves per tree).
↵^cMean of 50 fruits from 5 trees (10 fruits per tree).