https://jfmp.lppm.unand.ac.id/index.php/jfmp <p><strong><em>The Journal of Food and Medicinal Plants</em></strong> is a peer-reviewed journal dedicated to the dissemination of knowledge regarding plants that serve as food and medicine. Journals are published twice a year (June and December) by Institute for Research and Community Service, Universitas Andalas, West Sumatra.</p> <p><strong><em>The Journal of Food and Medicinal Plants</em></strong> is an essential reference filled with recent research and other valuable information associated with food and medicinal plants. The <em>Journal</em> serves as a focal point through which investigators and others may publish material of importance to the production, marketing, and utilization of these plants. The journal covers the following topics: agriculture, ecology, physiology, genetics, pest and plant disease, soil science, pharmacy, chemistry, and economics.</p> <p>Original articles and review articles provide information of interest to an international audience of researchers, teachers, technicians, and managers involved with the production and/or marketing of food and medicinal plants. Managers of food companies, food processing facilities, medical research laboratories, government agencies, and others interested in new chemicals, food additives, international trade, patents, and other items can easily review new findings.</p> <p><strong><em>The Journal of Food and Medicinal Plants</em></strong> is a forum in which recent research and other information associated with food and medicinal plants are shared. The <em>Journal</em> represents a centralized database accessible by investigators within the international community that work with or have an interest in food and medicinal plants.</p> Institute for Research and Community Service, Universitas Andalas en-US The Journal of Food and Medicinal Plants 2723-4304 https://jfmp.lppm.unand.ac.id/index.php/jfmp/article/view/23 <p>A private nursery located in the Al-Dujail District of Salah Al-Din Governorate hosted the experiment during the March 1st – February 28th 2023-2024 growing season. The goal was to determine how foliar application of the nano-fertilizer NPK and humic acid impacted vegetative and chemical growth characteristics of local orange seedlings, <em>Citrus sinensis L</em>. Uniform one-year-old seedlings with similar growth were selected as a method to decrease initial variance between experimental units and thus improve accuracy of results. This research was conducted using a two-factor factorial design and Randomized Complete Block Design (RCBD) with three replications for each treatment. The first independent factor was foliar application of the nano-fertilizer NPK 20:20:20 at three concentrations (0, 1, 1.5 g/L), while the second independent factor was foliar application of humic acid at three concentrations (0, 1.5, 2 g/L). A statistical analysis was performed using an analysis of variance table and significant difference comparison between means was done via the LSD test at a 0.05 significance level. The results are summarized below. Most vegetative growth and chemical growth traits of orange seedlings benefited from the use of nano-NPK fertilizer. The most substantial increase in growth occurred in the 1.5 g L^-1 spray application, which produced the maximum average growth rates for all of the vegetative growth traits (i.e., height, total leaf nitrogen, and leaf potassium) measured at 97.56 cm, 2.682 mg/g fresh wt, 3.92%, 1.69%, respectively. The results of this study show that the use of a humic acid spray significantly enhanced the vegetative growth traits and chemical growth traits of orange seedlings. The 2 g L^-1 spray application produced significant increases in plant height, number of branches per seedling, and total chlorophyll, nitrogen, and potassium in leaves by an average of 96.3 cm, 12.29 branches per seedling, 2.677 mg/g fresh wt., 3.56%, and 1.633%, respectively. Most of the vegetative and chemical growth markers measured for the two compounds were significantly affected by their interaction. When nano-NPK at 150 g L^-1 was mixed with humic acid at 2 g L^-1, the results produced were optimum for all vegetative and chemical growth markers as measured. </p> Sabreen Mohammed Lateef Marwa Noman Hussin Muntadher Mohammed Al-Mousawi Copyright (c) 2026 Sabreen Mohammed Lateef, Marwa Noman Hussin, Muntadher Mohammed Al-Mousawi https://creativecommons.org/licenses/by-nc/4.0 2026-04-27 2026-04-27 6 1 1 14 10.25077/jfmp.6.1.1-14.2026