Response of Bio-Stimulator and Foliar Spray of Nano-Nitrogen on Growth Characteristics of Two Mandarin Seedlings

Abstract

The experiment was conducted at the gardening station of the Gardening Department of the Ministry of Agriculture located in the al hyndia region of the holy of Karbala from 1 April 2020 until the end of November of the same year to study the effect of fertilization with bio stimulator bioHealth and nano-nitrogen spraying and overlap between them and the effect on improving the vegetative qualities of Mandarin seedlings (local V1 and clementine V2) the experiment included the study of three factors the first factor included the study of two Cultivars of Mandarine seedlings(local and clementine) The second factor involved fertilization with biohealth and three concentrations (0, 5, 10 g. Seedling-1), the third agent included spraying with nano-nitrogen fertilizer and three concentrations(0,2,4ml.L-1). The results revealed that the soil application of bio-stimulator (Bio-Health) has a significant increment in all the studied parameters, under the treatment of B2 (10 gm. seedlings-1) which revealed the highest values compared to the rest of the treatments. The foliar application of nano-nitrogen fertilizer at N2 (4 ml. L-1) has increased the branch length, the secondary shoots number, the stem diameter, leaves area, dry weight of vegetative growth, and leaves content of chlorophyll in comparison with treatment N1.