. 2019 Jul 4;19(13):2949. doi: 10.3390/s19132949

Table 3.

Integrated SPAD (SPADi) values for each N treatment within each phenological stage in each of the three sweet pepper (Capsicum annuum) crops. Different lower-case letters (a–d) show significant differences between N treatments within each phenological stage and crop, after LSD post-hoc test of ANOVA. p-value < 0.001. Values are means (n = 4) ± standard error (SE). Each crop was subjected to five different N treatments with four repetitions.

Phenological Stage	Treatment	2014 Crop	2016 Crop	2017 Crop
Vegetative	N1	45.0 ± 0.1^a	42.5 ± 0.2^a	40.8 ± 0.2^a
	N2	47.3 ± 0.3^b	46.4 ± 0.8^b	44.7 ± 0.9^b
	N3	50.2 ± 0.4^c	47.3 ± 0.7^bc	50.8 ± 0.7^c
	N4	51.2 ± 0.6^cd	48.6 ± 0.6^bc	52.0 ± 0.4^c
	N5	52.0 ± 0.5^d	49.5 ± 1.1^c	51.8 ± 0.7^c
Flowering	N1	47.7 ± 0.7^a	51.1 ± 0.7^a	45.8 ± 0.5^a
	N2	52.5 ± 0.1^b	57.6 ± 0.4^b	50.9 ± 0.4^b
	N3	57.9 ± 0.5^c	59.5 ± 0.5^c	55.2 ± 0.5^c
	N4	58.8 ± 0.2^cd	61.4 ± 0.4^d	55.8 ± 0.6^c
	N5	59.6 ± 039^d	61.3 ± 0.4^d	55.8 ± 0.3^c
Early fruit growth	N1	49.8 ± 1.0^a	55.9 ± 0.6^a	45.7 ± 0.5^a
	N2	59.1 ± 0.3^b	59.4 ± 0.4^b	54.7 ± 0.2^b
	N3	64.5 ± 0.4^c	62.5 ± 0.7^c	61.8 ± 0.7^c
	N4	65.5 ± 0.4^cd	64.5 ± 0.2^d	62.4 ± 0.5^c
	N5	67.0 ± 0.4^d	65.2 ± 0.3^d	62.7 ± 0.4^c
Harvest	N1	52.7 ± 1.2^a	54.9 ± 0.7^a	43.2 ± 0.8^a
	N2	63.2 ± 0.3^b	59.7 ± 0.3^b	51.2 ± 1.9^b
	N3	67.4 ± 0.3^c	62.4 ± 0.2^c	55.9 ± 1.6^c
	N4	69.3 ± 0.2^d	63.0 ± 0.4^cd	62.3 ± 0.6^d
	N5	70.0 ± 0.3^d	63.7 ± 0.4^d	62.3 ± 1.0^d