Growth and physiological characters of radish in response to humic acid enriched with MS medium

The Murashig and Skoog (MS) culture medium is highly nutritious and has complete macro and micro elements. Humic acid contributes to nutrients absorption and causes the growth and development of the plant. In this research, the growth and yield of radish (cv. Vikima) in the field was investigated using humic acid in combination with MS medium.

Humic acid in two levels (0 and 1.5 g/m2) and MS fertilizer in eight levels (0, 2, 4, 6, 8, 10, 12 and 14%) were used as factorial experiment based on randomized complete block design with three replications.

The results showed that with the use of MS fertilizer, the number of leaves, tuber sucrose, tuber sulfur, total chlorophyll and tuber total sugar increased compared to the humic acid. Application of 14% MS fertilizer increased the diameter of the tuber to 32.66 mm. Using humic acid in combination with 14% MS fertilizer, the amount of anthocyanin in the tuber increased to 0.00019 mol/g on fresh weight. In the interaction effects of humic acid and MS fertilizer, increasing the fresh weight of the leaf, the leaf area, the fresh weight of the tuber and the diameter of the tuber was recorded.

Humic acid as a supplement to MS fertilizer had a good effect on radish growth. Humic acid supplemented with MS fertilizer (up to 14% concentration) has proper effects on radish growth.