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Table 4 The combination effect of mineral oil, potassium sulfate, and calcium sulfate on phenological indices 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 Days to full bloom stage Days to berries pea-sized stage Days to ripening stage Fruit set
(%)
2017 2018 2017 2018 2017 2018 2017 2018
V0K0C0 54.2 b 53.4 c 69.0 b 68.50 b 138.5 b 141.50 ab 24.2 cd 24.4 c
V0K1C0 50.1 cd 49.4 d 65.5 c 64.50 c 137.0 b 137.50 c 31. 5 a 35.5 a
V0K0C1 51.0 c 51.1 d 66.5 c 66.50 bc 137.5 b 139.50 bc 27.4 bcd 26.4 bc
V0K1C1 49.5 d 50.3 d 65.0 c 65.50 c 137.0 b 138.50 bc 28.8 ab 30.8 ab
V1K0C0 57.0 a 56.9 a 72.5 a 72.50 a 144.5 a 145.50 a 25.5 cd 24.50 c
V1K1C0 55.5 ab 54.8 b 71.5 a 72.50 a 143.0 a 145.50 a 28.3 abc 28.0 b
V1K0C1 55.0 ab 56.2 a 71.5 a 72.50 a 143.0 a 145.50 a 27.7 bc 28.5 b
V1K1C1 56.5 a 56.7 a 71.5 a 72.50 a 143.5 a 145.50 a 28.7 abc 31.2 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