Effect of Ammonium Sulphate Incorporated with Calcium Nitrate Fertilizers on Nutritional Status, Fruit Set and Yield of Pomegranate Trees cv. Wonderful

The effect of (NH4)2SO4:Ca(NO3)2 ratios applied by fertigation on nutritional status, fruit set, yield, and marketable yield pomegranate trees cv. Wonderful was evaluated. were provided with five nutrient solutions the same total nitrogen level (200 units/ha) but different (100:0, 90:10, 80:20, 70:30, 60:40). Increasing (NH4)2SO4 ratio from 60 to 100% significantly reduced (N), magnesium (Mg), calcium (Ca), potassium (K) concentrations while increasing P Fe in leaves. highest proportion (100%) induced a reduction both chlorophyll content dry matter values maximum set (33.65% 31.40%) minimum drop (6.74% 6.25%) recorded at 60% (NH4)2SO4:40% Ca(NO3)2. 70% (NH4)2SO4:30% Ca(NO3)2 sunburn (9.54% 9.74%) cracking (6.45% 5.64%), (33.62 33.00 kg/tree), (27.41 27.93 kg/tree) 2019 2020 seasons, respectively. Our results provide valuable information about effects partial replacement fertilizer growth characteristics Wonderful.