STUDY EFFECT OF SOME AGRICULTURAL FACTORS IN GROWTH AND YIELD OF GREEN ONION (ALLIUM CEPA L.)

The experiment was conducted in the field of vegetables / of Horticulture and landscape Design Department / Faculty of Agriculture / University of Mosul_ during the season 2021-2022, to study the effect of spraying with humic acid and seaweed extract on the growth and yield of green onion plant. The experiment from the first factor included spraying with humic acid (H) at a concentration (H0, H1, H2) ml.L-1 and the second factor spraying with seaweed extract (Super 50) (S) at a concentration (S0, S1, S2) ml.L-1 and control treatment and by four sprays, The experiment was conducted in a randomized complete block design (RBCD) and with three replications, the local onion cultivar (Crystal) was used.The results showed the spraying treatments with humic acid and seaweed extract excelled in some traits of vegetative growth and yield compared to the control treatment, except for the traits of the number of tubular leaves, bulb circumference and bulb length, there was no significant difference and the best measurements resulted from spraying treatment with the interaction of humic acid with seaweed at a concentration of 2 ml.l-1 represented by (plant height, length of tubular leaves, weight of tubular leaves, dry weight of tubular leaves, bulb weight, experimental unit yield and the total yield where It amounted to 693.3 tons.ha-1 and for the control treatment it amounted to 553.3 tons. ha-1.