Abstract
A field experiment was carried out at the Agricultural Research Station of the College of Agriculture, University of Anbar for the growing season 2021-2022 to study the effect of potassium fertilizer and sulfur on the growth, yield and some nutrients of local variety garlic. Four levels of potassium were used as ground fertilization (0, 200, 250 and 300 kg K2O ha-1), three levels of potassium as foliar spray (0, 5 and 10 g L-1 K2O), and three levels of sulfur as ground fertilization (0, 40 and 50 kg S ha-1). The study was carried out according to a randomized complete block design (RCBD) in the form of combinations. The results showed that the combination T13 (300 kg K2O ha-1 +10 g L-1 K2O + 50 kg S ha-1) was significantly superior to the combination of plant height and number of leaves, which amounted to 110.04 cm and 11.42 Leaf respectively, and the combination T12 (300 kg K2O ha-1+ 10 g.L-1 K2O + 40 kg S ha-1) had a significant increase in yield traits (number of lobes, bulb diameter and yield of one plant) amounting to 37.65 and 7.32 cm and 100.90 g Respectively, the combination T13 (300 kg K2O ha-1 +10 g.L-1 K2O + 50 kg S ha-1) achieved the highest percentage of potassium and sulfur in the bulbs, which amounted to 1.87 and 0.67%, respectively.
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