Effects of Foliar Fertilization on Nutrient Uptake, Yield, and Fruit Quality of Pomelo (Citrus grandis Osbeck) Grown in the Mekong Delta Soils

Table 4

Influence of treatments on the pomelo yield and fruit quality.

Factor		2019			2020			2021
		TSS (°Brix)	Acidity (%)	Fruit yield (t ha^−1)	TSS (°Brix)	Acidity (%)	Fruit yield (t ha^−1)	TSS (°Brix)	Acidity (%)	Fruit yield (t ha^−1)
(A) Foliar fertilizers	Control	8.44^b	0.83^b	23.5^b	8.50^b	0.88^b	26.8^b	8.42^b	0.85^b	29.0^b
	FF1	10.7^a	0.55^a	28.3^a	10.2^a	0.61^a	30.8^a	10.8^a	0.65^a	32.5^a
	FF2	11.1^a	0.57^a	27.7^a	10.2^a	0.63^a	30.5^a	10.7^a	0.66^a	33.0^a
	FF3	8.67^b	0.81^b	23.2^b	8.66^b	0.81^b	27.5^b	8.79^b	0.83^b	28.5^b
(B) Experimental sites	HG A	9.62	0.71	25.2	9.38	0.76	29.0	9.78	0.75	30.7
	HG B	9.84	0.68	25.6	9.43	0.72	28.8	9.68	0.77	30.8
	HG C	9.70	0.69	26.2	9.38	0.73	28.9	9.56	0.73	30.7
F (A)
F (B)		ns	ns	ns	ns	ns	ns	ns	ns	ns
F (A × B)		ns				ns		ns	ns

Different lowercase letters indicate significant differences at P < 0.05 (^∗), P < 0.01 (^∗∗), and P < 0.001 (^∗∗∗); ns, not significant; FF1: 29.7 P2O5, 5.0 K2O, 6.7 MgO (% w/w); FF2: 29.7 P2O5, 5.0 K2O, 4.5 MgO, 6.0 Zn (% w/w); FF3: 35 Zn (% w/w).