To explore the possibility of using pyroligneous acid for environmentally friendly ginseng farming, this study observed samples of ginseng whose shoots were treated with pyroligneous acid sprays beginning in mid June, which is after foliation stage. The spongy tissue structure got thickened from triple layers to quadruple layers with the pyroligneous acid regardless of the concentration. The upper and lower epidermis cell of the leaves as well as the leaf mesopyll cells also became thicker. Compared to the no-treatment group, the overall growth and development of ginseng roots treated with pyroligneous acid were excellent. Accordingly, it is believed that pyroligneous acid can be an environmentally friendly alternative to conventional agro-chemicals applied to ginseng that can be used to facilitate the growth and development of ginseng.
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