عنوان مقاله [English]
نویسندگان [English]چکیده [English]
In order to investigate the influence of humic acid and fulvic acid on some growth characteristics in ornamental plant of Scindapsus spp., an experiment was conducted based on a completely randomized design with three replications at the greenhouse site of Ferdowsi University of Mashhad during 2014-2015. The first factor was humic acid in four levels of 0, 0.2, 0.5, 1 g/l, and the second factor was fulvic acid in four levels of 0, 0.2, 0.5, 1 g/l. Based on the results obtained, the combined use of humic acid and folic acid had a significant effect on height, fresh and dry weights of leaf, shoot, aerial organ and root, number of node and leaf and volume of aerial organ, fresh and dry weights of root, length and volume of root and the ratio of fresh and dry weights of aerial organ to root. Thus, combined use of humic acid and fulvic acid caused an increase in all the measured traits compared to the control treatment. Furthermore, an increase was observed in the length, width, and area of leaf, and internode length as the result of using humic substances when compared to the control treatment. In general, according to the results of the experiment, it can be concluded that use of humic substances (humic acid and fulvic acid) together improve the growth characteristics of the plant and lead to the better growth of the plant ; As a result, these materials can be a good alternative to plant growth-stimulating chemical fertilizers.