Research on Crops

Effect of organic and NPK fertilizer rates on the growth and yield of sand ginger (Kaempferia galanga L.)

 

DOI: 10.31830/2348-7542.2025.ROC-1190    | Article Id: ROC-1190 | Page : 374-380
Citation :- Effect of organic and NPK fertilizer rates on the growth and yield of sand ginger (Kaempferia galanga L.). Res. Crop. 26: 374-380
D. T. C. NGUYEN, D. T. NGUYEN AND D. H. TRAN tdanghoa@hueuni.edu.vn
Address : Hue University. 3 Le Loi Street, Thuan Hoa, Hue City, Vietnam
Submitted Date : 6-04-2025
Accepted Date : 21-04-2025
Online Published:

Abstract

Sand ginger (Kaempferia galanga L.) is a valuable medicinal and spice plant, traditionally used for various therapeutic purposes. However, overexploitation has led to a decline in its natural reserves, highlighting the need for sustainable cultivation. This study examines the combined effects of chemical (NPK) and microbial organic fertilizers on its growth and yield, providing insights for sustainable production and conservation in Vietnam.  The field experiment was conducted from March 2023 to June 2024 at a local farmer’s farm at Ayun commune, Mang Yang district, Gia Lai province, Vietnam. The study used a split-plot design with microbial organic fertilizer (Song Gianh) at four levels (0–3 t/ha) and NPK fertilizer at five levels (0–150 kg N, 0–150 kg P₂O₅, 0–110 kg K₂O/ha). The results showed that the microbial organic fertilizer and NPK had a positive effect on the growth and yield of sand ginger. Fertilization at 3 t/ha of the organic microbial fertilizer with inorganic fertilizer levels of P2 (120 kg N, 120 kg P2O5  and 90 kg K2O/ha) was the optimal dose for the highest growth and yield of sand ginger. Soil decomposed with the combined fertilizers increased organic matter and improved soil physical, chemical and biological properties. Therefore, the combined fertilizers can be used for sand ginger production.

Keywords

Combined fertilization 31 31);">Kaempferia galanga 31 31);"> microbial organic fertilizer sand ginger soil fertility

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