Leaf characteristics of Basilicum (Ocimum basilicum L) affected by different levels of humic acid and tea compost

In order to investigate the effect of humic acid organic fertilizers and tea compost on the characteristics of leaf basil, including leaf number, total leaf chlorophyll, leaf nitrogen, leaf fresh weight, leaf dry weight, leaf area per plant and leaf specific weight, a experiment in the forme of factorial based on completely randomized design in four replicate conducted under a potted condition in a research greenhouse of the Faculty of Agriculture and Natural Resources, Islamic Azad University, Karaj Branch. The experimental factors included different humic acid (HA) rates (0, 50 and 150 mg.kg-1) and tea compost (TC) (0, 0.5 and 1% of the soil weight. According to the humic acid and tea compost interaction results were significant on leaves number per plant (p