Nghiên cứu ảnh hưởng của các công thức bón phân đến năng suất và chất lượng của cây rau má (Centella asiatica L.)

Abstract

Centella is a vegetable and traditional medicinal plant popular in Asian countries. Currently, this herb has a growing demand in cosmetic and pharmaceutical. The cultivation of centella is facing the problem of overuse of chemical fertilizers and quality deterioration. The aim of this study was to evaluate the effect of fertilizer formulas on yield and quality of centella. The set-up was performed in the field from October 2020 to April 2021 in Thua Thien Hue province. The intergrated organic and inorganic fertilizer treatment (5 tonnes organic fertilizer/ha + 75 kg N/ha + 25 kg P₂O₅/ha + 25 kg K₂O/ha) produced maximum yield (22.7 tons/ha) and economic efficiency (136.3 million dong/ha, increased flavonoid content of the herb (18.5 mg QE/g), dry matter content (40.5%) and enhanced some chemical characteristics of the soil. This treatment should be considered as the optimal amount for reconciling limited yield loss and maintaining the quality of centella.