Table 4 Effect of different sources and method of Zn fertilization on Zn concentration and uptake at harvest of soybean during the experimentation. Means followed by a similar uppercase letter within a column are not significantly different at p < 0.05 using tukey’s HSD test.

Treatments	Zn content in grain (mg kg⁻¹)		Zn content in stover (mg kg⁻¹)		Zn uptake in grain (g ha⁻¹)		Zn uptake in stover (g ha⁻¹)		Total Zn uptake by grain + stover (g ha⁻¹)
	2018	2019	2018	2019	2018	2019	2018	2019	2018	2019
Varieties
JS-335	31.5^a	31.0^a	22.8^a	22.0^a	47.2^ab	47.2^a	34.0^b	30.5^c	81.2^b	77.7^b
JS-97-52	28.4^b	29.0^b	21.5^b	21.1^a	53.5^a	49.4^a	41.0^a	37.8^b	94.6^a	87.2^a
Local	30.6^a	31.4^a	21.8^ab	22.4^a	39.6^b	39.1^b	39.0^a	44.0^a	78.6^b	83.1^ab
*Zn fertilization strategies*
Control	25.6^d	26.7^d	20.2^c	19.3^b	35.2^e	35.0^c	31.3^c	29.8^c	66.5^d	64.8^c
SA-ZS	29.7^bc	29.5^cd	21.9^abc	22.0^a	45.2^cd	42.9^b	37.4^b	37.6^b	82.6^bc	80.5^b
SA-ZO	28.8^c	29.6^bcd	22.1^ab	22.3^a	43.1^d	43.0^b	35.4^bc	37.4^b	78.5^c	80.5^b
SA + FA-ZS	32.5^ab	32.6^ab	23.7^a	23.2^a	53.1^ab	51.6^a	42.7^a	40.7^ab	95.9^a	92.4^a
SA + FA-ZO	31.4^abc	31.5^abc	21.2^bc	21.1^ab	50.1^bc	47.2^ab	38.4^b	36.7^b	88.5^b	83.9^b
FA-ZS	34.4^a	33.2^a	23.7^a	23.2^a	55.6^a	51.2^a	43.8^a	43.0^a	99.4^a	94.3^a
FA-ZO	28.8^c	30.2^bc	21.3^bc	21.5^ab	45.2^cd	45.6^b	37.1^b	36.6^b	82.4^bc	82.3^b
Int. (LSD p = 0.05)	NS	NS	NS	NS	NS	NS	NS	NS	NS	NS

Where, the SA-ZS and SA-ZO denotes soil application of Zn @ 5 kg ha⁻¹ through ZnSO₄.7H₂O and ZnO, respectively; SA + FA-ZS, soil application of Zn at 5 kg ha⁻¹ through ZnSO₄.7H₂O + foliar spray of ZnSO₄.7H₂O at 0.25% at pre-flowering and pod formation stages; SA + FA-ZO, soil application of Zn at 5 kg ha⁻¹ through ZnO + foliar spray of ZnO at 0.25% at pre-flowering and pod formation stages; FA-ZS and FA-ZO, foliar spray of ZnSO₄.7H₂O and ZnO, respectively, at 0.5% at maximum vegetative stage, pre-flowering and pod formation stage.

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