THE EFFECTS OF PLANTING DENSITY AND FERTILIZER TREATMENT ON THE GROWTH, DEVELOPMENT, YIELD AND SUGAR CONTENT OF STEVIA REBAUDIANA BERTONI.) IN NORTHER REGION, VIET NAM

Author Name: 1. Thu. Phanthi, Hung. Nguyenba, Lam. Phanthi, Duyen. Nguyenthi, Thu. Lethi, Hai. Trandai, Hang. Cuthi 2. Chung. Nghiemtien, Van. Ngodinh

Volume/Issue: 02/05

Country: VietNam

DOI NO.: 08.2020-25662434 DOI Link: https://www.doi-ds.org/doilink/11.2021-85834123/UIJIR

Affiliation:

1. National Institute of Medicinal Materials in VietNam;
2. Department of science and technology in Nghe An Province.

ABSTRACT

Three factor (N, P, K) and planting density are important major effect to yield and quality of leaf Stevia rebaudiana Bertoni plant after harvest via clustering of High Performance Liquid Chromatography (HPLC). In this reasech, the experiment was carried out to find the fertilizer formula and planting density suitable for growth and development Sweet grass plant in norther Viet Nam. The result indicated that fertilizer combination P2 treatment (300 kg Nitrogen (N) + 100 kg P205 phosphorus (P2O5) + 240 kg Kalidioxid (K20) and D2 planting density obtained the highest glycoside content in Stevia rebaudiana Bertoni. This formular also was recommended for production process of high quality medicinal in the future.

Key words: Stevia rebaudiana Bertoni; Glycoside and RA content; High Performance Liquid Chromatography (HPLC)