https://doi.org/10.37229/fsa.fjh.2023.12.311

Garlic cloves of Balady cultivar were sown at Fac. Tech. Develop. Farm, Zagazig Univ., Egypt during the two winter seasons of 2021/ 2022 and 2022/ 2023. This experiment was done to enhance garlic growth and its productivity as well as N, P and K percentages by utilizing different potassium silicate rates (2 and 4 ml/l) in combination with ascorbic acid at different concentrations (150 and 300 ppm) beside a control (sprayed with tap water) to obtain nine treatments. The achieved results cleared that spraying garlic plants three times per season with potassium silicate at 4 ml/l + 300 ppm of ascorbic acid gave the highest values of plant height (65.00 and 65.67 cm), number of leaves per plant (8.33 and 8.67 leaves), plant fresh weight (403.33 and 424.67 g) and leaves dry weight per plant (19.33 and 22.00 g) in the 1^st and 2^nd seasons, respectively. Likewise, the largest bulb diameter and more cloves number as well as NPK percentages were noticed with 300 ppm ascorbic acid combined with 4 ml/l potassium silicate compared to the other treatments under study. In general, the highest bulb yield per feddan (9.680 and 10.192 ton) was obtained with the highest rate of potassium silicate and highest concentration of ascorbic acid compared to individual or and mixture effect under study.