TY - JOUR AU - Hassan, Haider H. AU - Huthily, Kadhim H. AU - Mohsen, Kareem H. PY - 2019/11/14 Y2 - 2024/03/29 TI - Effect of Humic Acid and Silicon on some Growth Characteristics of Maize (Zea mays L.) JF - Basrah Journal of Agricultural Sciences JA - Basrah J. Agric. Sci. VL - 32 IS - 2 SE - ORIGINAL ARTICLE(S) DO - 10.37077/25200860.2019.190 UR - https://bjas.bajas.edu.iq/index.php/bjas/article/view/106 SP - 23-32 AB - <p style="text-align: justify;">A field experiment was conducted during the autumn season of 2018 at agricultural research station in Al- Qurna district (80 km north of Basra center). The aim was to study the effect of spraying different concentrations of humic acid (HA) and silicon on the some growth characteristics of maize (<em>Zea mays</em>&nbsp;L.). The experiment was conducted using Three Concentration of humic acid were used 0, 2 and 4 gm L<sup>-1</sup>, which took the following symbols H<sub>0</sub>, H<sub>1</sub>, and H<sub>2</sub>&nbsp;respectively and four concentrations of silicon 0, 1, 2 and 3 mML<sup>-1</sup>&nbsp;which took the symbols S<sub>0</sub>, S<sub>1</sub>, S<sub>2</sub>&nbsp;and S<sub>3</sub>&nbsp;respectively. A factorial experiment was used in randomized completely block design with four replicates. Maize seeds cv. Fajir1 were planted at 20/7/2018 in a silty loam soil. The results showed that the concentrations of HA differed significantly in all most of the studied characteristics, plant height, leaf area and ear length with an increase by 11.69, 24.89 and 3.49% respectively as compared to the control treatment (H<sub>0</sub>). The spraying with silicon showed a significant effect. Moreover, the concentration of S<sub>3</sub>&nbsp;gave the highest values for plant height, stem diameter, leaf area and ear length. The interaction between HA and silicon showed a significant effect on some of the studied characteristics, the combination of S<sub>3</sub>×H<sub>2</sub>&nbsp;produced the highest values of plant high (174.42 cm) and leaf area (7390.65 cm<sup>2</sup>).</p> ER -