Evaluation of biochemical parameters and antioxidant activity of basil (Ocimum ‎basilicum L.) in response to fulvic acid and fertilizer (NPK)‎

Document Type : Full Paper


1 Assistant Professor, College of Agriculture, University of Birjand, Iran

2 M. Sc. Student, College of Agriculture, University of Birjand, Iran

3 Associate Professor, College of Agriculture, University of Birjand, Iran


In order to determine the effect of fulvic acid and NPK fertilizer on antioxidant activity, biochemical parameters and yield of basil, an experiment was conducted as factorial arrangement based on randomized complete block design. The results showed that the highest of anthocyanin (21.1 mg/g dry weight) with application of 3 per thousand of NPK fertilizer and the lowest anthocyanin (0.95 mg/g dry weight) were obtained from control treatment. The highest antioxidant activity (76.6%) was obtained from 5 kg/ ha fulvic acid and its lowest (70.6%) were obtained from control treatment(no fertilizerfulvic acid and NPK fertilizer). Also the highest anthocyanin (1.74 mg/g dry weight), chlorophyll b (1.52 mg/g fresh weight) and total chlorophyll (2.99 mg/g fresh weight) were obtained by application of 3 per thousand of NPK fertilizer and 10 kg ha-1 fulvic acid. Also result showed that the highest biological yield (22955 kg.ha-1)  and plant dry weight (483.8 gm-2) were obtained from treatment of 6 per thousand of NPK fertilizer and 10 kg ha-1 fulvic acid and the lowest amounts (14418 kg ha-1 and 259.5 gm-2) from control treatment (no fertilizerfulvic acid and NPK fertilizer(


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