effect of wood vinegar on soil pH ,soil salinity (EC) and some characteristics of Zea mays L.
Abstract A field experiment was performed at the College of Agriculture Research Station, University of Kufa, on sandy loam soil to investigate the impact of wood vinegar on soil pH and electrical conductivity (EC) and some characteristics of yellow corn (Zea mays L.). Five concentrations of wood vinegar (0, 1, 5, 25, and 50 ml L⁻¹) were administered in consistent increments over a duration of three months. The experimental results demonstrated that the initial application of wood vinegar markedly decreased the electrical conductivity, achieving a minimum value of 0.425 dS/m⁻¹ for the BCH50 treatment, in contrast to 1.495 dS/m⁻¹ for the control treatment. Likewise, the third injection of BCH50 resulted in a reduction of electrical conductivity, attaining 0.516 dS/m⁻¹. Concerning soil pH levels, wood vinegar decreased the pH to 5.90 in the BCH50 treatment during the third application, with the majority of treatments exhibiting values below 7, in contrast to the control treatment, which recorded a pH of 8. The treatments markedly influenced the vegetative development traits of yellow corn. The findings indicated that plant height escalated with higher vinegar concentrations, with the BCH50 treatment attaining maximum measurements of 65.5, 69.25, and 79.75 cm throughout the three application rates, respectively. The fresh weight of the plants grew with higher vinegar concentrations, peaking at 171.5 g in the BCH50 treatment, followed by 167.25 g in BCH25 and 161.25 g in BCH1. The largest significant increase in plant dry weight occurred at the medium dose of BCH25 (59.525 g), followed by BCH1 (46.125 g) and BCH50 (40.5 g). The results demonstrate that medium and high concentrations of wood vinegar markedly enhanced vegetative development, although the medium concentration exhibited a more equitable impact on dry matter accumulation relative to the high concentration.