Pengaruh Pupuk NPK dan Plant Growth Promoting Rhizobacteria (PGPR) Akar Bambu terhadap Pertumbuhan dan Produksi Edamame (Glycine max (L.) Merrill)

Abstract

RICKY MARTIN HUTASOIT. The Effect of NPK Fertilizer and Plant Growth Promoting Rhizobacteria (PGPR) Bamboo Roots on the Growth and Production of Edamame (Glycine max (L.) Merrill) (Supervised by NOVERITA SPRINSE VINOLINA). Edamame (Glycine max (L.) Merrill.) is classified as a vegetable rich in nutrients, including high protein content, amino acids, dietary fiber, low saturated fat, and various minerals. Appropriate NPK fertilizer dosage and the optimal concentration of bamboo root PGPR are able to enhance nutrient uptake, thereby optimizing the growth and yield of edamame. This study was conducted in Padang Bulan Selayang II Subdistrict, Medan Selayang District, Medan City, North Sumatra, at an altitude of approximately ±25 meters above sea level, located at coordinates 3°55’47.34” E and 98°64’58.76” S. The research was carried out from May to July 2025. The experiment employed a factorial randomized block design consisting of two factors with three replications. Factor 1 was the dosage of NPK Mutiara fertilizer: 0, 100, 200, and 300 kg/ha. Factor 2 was the concentration of bamboo root PGPR: 0, 10, 20, and 30 ml/L of water. The results showed that NPK treatment increased the parameters of flowering age, shoot dry weight, root fresh weight, and root dry weight. Bamboo root PGPR increased flowering age. The interaction between NPK and bamboo root PGPR resulted in an increase in plant height at 5 weeks after planting and shoot dry weight, but did not show a significant effect on the other observed parameters.