Combination of Biofertilizers in Soybean Cultivation (Glicyne max L. Merril) in Acidic Soil

The utilization of acidic soil is often not maximized due to various problems, especially those related to the physical and chemical properties of the soil. Efforts to increase productivity in acidic soil can be done through the use of biological fertilizers such as Arbuscular Mycorrhizal Fungi (AMF) and Rhizobium, which play a role in increasing phosphorus and nitrogen absorption. This study aims to determine the most effective combination of biological fertilizers for soybean cultivation. The study was conducted in Sirnabaya Village, East Telukjambe District, Karawang Regency, West Java. The experiment was conducted over a period of 3 months, from March 2025 to May 2025. The method used was an experimental method using a single-factor Randomized Block Design (RBD). There were a total of 9 treatments repeated 4 times, resulting in 36 experimental units. The treatments consisted of A (control), B (AMF 15 g/plant), C (AMF 20 g/plant), D (Rhizobium 15 ml/kg of seeds), E (AMF 15 g/plant + Rhizobium 15 ml/kg of seeds), F (AMF 20 g/plant + Rhizobium 15 ml/kg seed), G (Rhizobium 20 ml/plant), H (AMF 15 g/plant + Rhizobium 20 ml/kg seed), I (AMF 20 g/plant + Rhizobium 20 ml/kg seed). The observation data were tested using the F test, and if there was a significant effect, it was further tested using the Duncan Multiple Range Test (DMRT) at a 5% level. The results showed that treatment H had the best effect on root infection parameters, root length per plant, root dry weight, number of pods per plant, seed weight per 100 seeds, plant height, and number of leaves.