Table 2.

Natural incidence of gray mold (% of affected berries) of ‘Benitaka’ table grapes after 30 and 45 days of storage in cold chamber at 1 ± 1 °C and 3 days at shelf-life at 22 ± 1 °C after the period of cold storage, individually packaged in clamshells with different SO₂-generating pads and perforated plastic liners.

Type of SO2 Release and Amount of SO2 in Pads (A)	Incidence of Gray Mold (% of Affected Berries)
	After 30 Days in Cold Chamber	After 45 Days in Cold Chamber	After 3 Days at Shelf-Life
Slow release—4 g	0.31 ± 0.11 a	0.92 ± 0.20 a	2.68 ± 0.42 a
Slow release—7 g	0.03 ± 0.04 b	0.35 ± 0.12 b	0.35 ± 0.07 b
Dual release—5 g	0.00 ± 0.00 b	0.04 ± 0.00 b	0.04 ± 0.00 b
Dual release—8 g	0.00 ± 0.00 b	0.00 ± 0.04 b	0.00 ± 0.00 b
Ventilation area of perforated plastic liners (B)
0.3%	0.10 ± 0.07 a	0.37 ± 0.17 a	0.69 ± 0.34 a
0.9%	0.03 ± 0.04 a	0.26 ± 0.11 a	0.66 ± 0.28 a
1.0%	0.12 ± 0.08 a	0.35 ± 0.18 a	0.95 ± 0.53 a
Contrast of the additional treatment with the factorial
Additional treatment	0.59 ± 0.23 a	1.45 ± 0.57 a	1.46 ± 0.55 a
Factorial	0.08 ± 0.07 b	0.32 ± 0.16 b	0.71 ± 0.39 a
F (A)	5.41 *	11.19 *	55.32 *
F (B)	0.65 ns	0.16 ns	0.43 ns
F (A × B)	0.66 ns	0.85 ns	0.82 ns
F (additional treat. × factorial)	17.43 *	18.96 *	2.58 ns
CV %	19.74	32.44	47.69

Means within columns followed by the same letters are not statistically different as determined by Tukey’s test (* p ≤ 0.05). ns: not significant. CV: coefficient of variation. Original data were transformed by $\sqrt{x+0.5}$.