Application of different foliar iron fertilizers for improving the photosynthesis and tuber quality of potato (Solanum tuberosum L.) and enhancing iron biofortification

Chemical and Biological Technologies in Agriculture

Table 3 N_PQ, qP, ETR, 1-qP of potato as affected by different iron fertilizer treatments

	Treatment	N_PQ	qP	ETR	1-qP
CY-1	CK	0.33 ± 0.0500a	0.83 ± 0.0259a	76.92 ± 3.1859b	0.17 ± 0.0259a
	T1	0.30 ± 0.0040a	0.81 ± 0.0054a	83.13 ± 0.3890b	0.19 ± 0.0054a
	T2	0.35 ± 0.0492a	0.83 ± 0.0115a	85.32 ± 0.4507ab	0.17 ± 0.0115a
	T3	0.23 ± 0.0261a	0.86 ± 0.0052a	88.35 ± 1.1659ab	0.14 ± 0.0052a
	T4	0.32 ± 0.0844a	0.80 ± 0.0165a	81.45 ± 0.1945b	0.20 ± 0.0165a
	T5	0.36 ± 0.0299a	0.85 ± 0.0024a	97.77 ± 6.9963a	0.15 ± 0.0024a
CY-2	CK	0.60 ± 0.1575a	0.63 ± 0.0879c	76.92 ± 2.9566b	0.37 ± 0.0879a
	T1	0.45 ± 0.0496a	0.72 ± 0.0092bc	82.80 ± 0.8351b	0.28 ± 0.0092ab
	T2	0.52 ± 0.0495a	0.80 ± 0.0654abc	84.99 ± 1.4417b	0.20 ± 0.0654abc
	T3	0.48 ± 0.0038a	0.92 ± 0.0253a	88.68 ± 2.0187ab	0.08 ± 0.0253c
	T4	0.48 ± 0.1105a	0.83 ± 0.0141ab	79.45 ± 0.6954b	0.17 ± 0.0141bc
	T5	0.67 ± 0.0476a	0.87 ± 0.0072ab	99.44 ± 1.1567a	0.13 ± 0.0072bc

Data are mean ± standard error of the three replicates. Different lowercase letters in the same column indicate significant differences among treatments (p < 0.05). CK-no iron fertilizer, T1-Fe₂(SO₄)₃ fertilizer, T2-FeSO₄·7H₂O fertilizer, T3-CA/Fe₂(SO₄)₃ fertilizer, T4-CA/FeSO₄·7H₂O fertilizer, T5- (EDTA-Fe·Na) fertilizer. CY-1 (2020), CY-2 (2021)