Table 10.

Interactions means ± SE for the effects of year, production region, production systems and grape type on TAC in table grapes.

Parameter				Factor 4
	Factor 1	Factor 2	Factor 3	Grape Type
	Year	Production Region	Production System	White	Red
TAC mg cyan kg−1	2015	South Africa	Organic	6 ± 2 b A	89 ± 8 a C
			Conventional	5 ± 2 b A	119 ±12 a B
		Mediterranean	Organic	13 ± 1 b A	62 ± 7 a D
			Conventional	9 ± 2 b A	101 ± 17 a C
	2016	South Africa	Organic	14 ± 3 b A	78 ± 15 a C D
			Conventional	10 ± 2 b A	98 ± 18 a C
		Mediterranean	Organic	16 ± 2 b A	78 ± 7 a C D
			Conventional	13 ± 3 b A	201 ± 45 a A
TAC mg mal kg−1	2015	South Africa	Organic	7 ± 2 b A	94 ± 9 a C
			Conventional	6 ± 2 b A	126 ± 13 a B
		Mediterranean	Organic	14 ± 1 b A	66 ± 8 a D
			Conventional	10 ± 2 b A	106 ± 18 a C
	2016	South Africa	Organic	15 ± 3 b A	82 ± 16 a C D
			Conventional	10 ± 2 b A	97 ± 19 a C
		Mediterranean	Organic	17 ± 2 b A	82 ± 7 a C D
			Conventional	14 ± 3 b A	213 ± 47 a A

cyan, cyanidin 3-glucoside equivalents; mal, malvidin 3-glucoside equivalents; For each parameter assessed means labeled with the same lower case letter within the same row and same capital letters within the same column are not significantly different (General Linear Hypothesis test p < 0.05.