Effect of Humic Acid and Silicon on some Growth Characteristics of Maize (Zea mays L.)

Abstract

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 (Zea mays L.). The experiment was conducted using Three Concentration of humic acid were used 0, 2 and 4 gm L-1, which took the following symbols H0, H1, and H2 respectively and four concentrations of silicon 0, 1, 2 and 3 mML-1 which took the symbols S0, S1, S2 and S3 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 (H0). The spraying with silicon showed a significant effect. Moreover, the concentration of S3 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 S3×H2 produced the highest values of plant high (174.42 cm) and leaf area (7390.65 cm2).

Effects of Different Humic Acid Doses on Yield and Quality Properties of Corn (Zea mays L.) in Iraq-Sulaymaniyah Conditions

“…The plant height increase associated with HA application may have been caused by the physiological effects of humic acid, including increased cell membrane permeability, acceleration of cell division, and root system development (Khaled & Fawy, 2011). Similar results that support these findings were demonstrated by Balbaa & Awad, 2013, Daur & Bakhashwain, 2013, El-Saber et al, 2014, Moghadam et al, 2014, Banitamim & Shokuhfar, 2017, Hussain et al, 2018, Aseres et al, 2019, and Hassan et al, 2019.…”

Response of Red Chili (Capsicum anuuum L.) to Humic Acid Application in Dryland

“…Furthermore, the application of humic acid could increase the growth, yield and quality of potato yields caused by the increased nutrient content of P, K, Ca, Mg, Fe, Zn, and Mn, except for Cu (Ekin, 2019). The research results on corn plants conducted by Hassan et al (2019) also showed that the application of humic acid significantly increased the plant height, leaf area, and length of the ear by 11.69, 24.89 and 3.49% compared to those without humic acid.…”

Effects of Foliar and Soil Applications of Silicic Acid (Silicon 0.8%) on the Growth and Yield of Tomato under Greenhouse Conditions

“…The applications of (stabilized) silicic acid, as foliar spray or as soil (drench) application (1 and 2 ml/L) resulted in proportional and significant increases in growth, yield and chemical parameters in tomato plants grown in silty clay pretreated with organic fertilizers [19]. The soil (drench) application of silicic acid 2 ml/L was more effective on the increase of the growth parameters during the vegetative stage, like the leaf surface [7,20] , the fresh and dry weight, and the chlorophyll content, as compared to the foliar spray amendments 2 ml/L. At the other hand, the foliar silicic acid sprays 2 ml/L resulted in significant higher fruit yields (early and total yield) compared to the soil amendments 2ml/L.…”