Main Article Content
A field experiment was carried out for the spring and autumn seasons 2020 in Rawa district. The first factor occupied the stages. Addition of humic acid and the second planting dates. I used a randomized complete-plot design (RCBD) with split-plot arrangement with three replications to see the effect of the phases of humic acid addition (S0, S1, S2 and S3) and planting dates (1 D, D2 and D3) in Some of the characteristics of vegetative growth and the results exceeded the treatment S3 in (plant height, leaf area and the ear height) as it achieved 200.28 cm, 591.1 cm2, and 117.39 cm respectively in the spring season, but in the autumn season, treatment S2 surpassed in (the fewest days from emergence until 50% tasseling and silking, in the characteristic of plant height and ear height) gave 45.78 days, 52.00 days, 232.66 cm and 136.20 cm respectively. Treatment S1 also outperformed the leaf area, as it gave 836.1 cm2. The planting dates had a moral effect in most of the studied characteristics in the two seasons, in the spring season the date D3 exceeded in (the fewest days from emergence of up to 50% tasseling and silking), as it gave a day, 74.42 days, respectively, and the date D2 exceeded (an increase in characteristic ear height) as it gave 118.26 cm, but in the autumn season it exceeded the date D3 in (the fewest days from emergence of up to 50% tasseling and silking, recipe for plant height and the ear height) as it gave 44.50 days, 49.58 days, 238.90 cm, 141.59 Cm respectively, as the interaction had a significant effect on most of the studied traits. In the spring season, the parameters D2, S3 and D2, S2 and D1, and S2 were distinguished in the characteristic of( plant height ,leaf area and ear height), respectively, as it gave 203.33 cm. 635.6 cm2, 120.53 cm, respectively, but in the autumn season, the treatment and D3 and S1 were distinguished in (plant height and ear height) as it gave, 242.43 cm and 145.33 cm, respectively, while treatment D3 and S2 were distinguished in (the fewest days of Emergence of up to 50% tasseling), given 43.67 days.