1Department of Botany, Gorakhpur University, Gorakhpur-273001, India
2Department of Botany, Gorakhpur University, Gorakhpur-273001, India
Department of Plant Physiology, Institute of Agricutural Sciences, Banaras Hindu University, Varanasi-221005
Effect of ethanolic extract of Moringa oleifera leaves was found to be beneficial for nodulation and nitrogenase activity in Vigna numgo, when applied by seed-soaking or basal treatment (root-dressing). Both the methods of application increased the nodule number per plant, whereas the seed-soaking treatment quickened the maximum nodule initiation. Fresh and dry weight of the nodules were also increased to a greater extent with the application of both the type of treatments. The lower concentrations (i.e. 0.04% and 0.08%) were found more effective for the activity of nitrogenase as compared to higher concentrations (i.e. 0.16% and 0.24%) in case of seed-soaking as well as root dressing. None of the higher concentrations of the extract was found inhibitory to the above parameters.
