Perngaruh Kombinasi Pupuk N dan Bakteri Fotosintetik terhadap Pertumbuhan dan Hasil Kedelai Edamame pada Tanah Gambut

Edamame soybean plants are classified as a type of legume, growing upright and with dense leaves. Edamame soybeans can be consumed fresh or processed. One of the soils that can be planted with edamame is peat soil. However, peat soil still has obstacles such as acidic soil conditions and poor nitrogen (N) nutrients in the soil. Low nitrogen content in peat soil can be overcome by adding N fertilizer and photosynthetic bacteria. The use of photosynthetic bacteria in cultivating edamame soybeans can help increase nitrogen supply by fixing nitrogen (N) in the air. This research aims to determine the efficiency of applying a combination of nitrogen fertilizer and photosynthetic bacteria on the growth and yield of edamame soybeans in peat soil. This research was carried out in Pontianak City, with a research duration of approximately 3 months starting from 17 June - 29 August 2023. This research used a Completely Randomized Design consisting of 4 treatment levels, namely; n1= 25 kg/ha N fertilizer + photosynthetic bacteria, n2= 50 kg/ha N fertilizer + photosynthetic bacteria, n3= 75 kg/ha N fertilizer + photosynthetic bacteria, n4= 100 kg/ha N fertilizer + photosynthetic bacteria. The variables observed in this study consisted of plant height, number of productive branches, root volume, plant dry weight, number of root nodules, flowering age, number of pods and pod weight. This research aims to determine the efficiency of applying a combination of nitrogen fertilizer and photosynthetic bacteria on the growth and yield of edamame soybeans in peat soil. The results showed that the combination of nitrogen fertilizer and photosynthetic