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Table 2 The combination effect of mineral oil, potassium sulfate, and calcium sulfate on leaf macro-elements of Sultana grapevine

From: Effects of foliar spray of agricultural grade mineral oil in springtime, in combination with potassium and calcium sulfates on the phenological and biophysical indices of clusters, and foliar nutritional levels in grapevine (Vitis vinifera L.) cv. Sultana (Id. Thompson seedless, Sultanina)

Treatment N
(%)
K
(%)
P
(%)
Ca
(%)
Mg
(%)
2017 2018 2017 2018 2017 2018 2017 2018 2017 2018
V0K0C0 2.26 b 2.07 c 1.35 e 1.31 e 0.38 b 0.35 b 2.07 cd 2.01 d 1.13 c 1.20b c
V0K1C0 2.41 a 2.33 ab 2.04 a 2.16 a 0.28 c 0.35 bc 2.58 b 2.67 b 1.50 a 1.35 a
V0K0C1 2.38 a 2.37 a 1.74 bc 1.72 c 0.40 a 0.39 ab 2.63 b 2.70 b 1.30 b 1.25 b
V0K1C1 2.45 a 2.43 a 1.84 b 1.97 bc 0.42 a 0.30 c 2.84 a 2.87 a 1.45 ab 1.17 ab
V1K0C0 2.03 c 1.72 d 1.48 de 1.56 d 0.43 a 0.45 a 2.00 d 1.92 d 1.13 d 1.16 cd
V1K1C0 2.07 c 2.03 c 1.90 ab 2.03 a 0.35 b 0.30 c 2.36 cd 2.40 c 1.22b c 1.17 cd
V1K0C1 2.25 b 2.22 b 1.61 cd 1.79 c 0.35 b 0.35 b 2.45 bc 2.70 b 1.13 c 1.06 d
V1K1C1 2.35 ab 2.22 b 1.99 a 2.10 ab 0.38 ab 0.33 bc 2.47 b 2.69 b 1.43 ab 1.28 ab
  1. The means with common letters in each column according to Duncan's test are not significantly different (P < 0.05). V0 = 0.00% mineral oil, V1 = 1.00% mineral oil; K0 = 0.00% K2SO4, K1 = 3.00% K2SO4; C0 = 0.00% CaSO4, C1 = 2.00% CaSO4