SYMBIOSIS RESPONSE OF <i>Rhizobium japonicum</i> Kirchner WITH SOYBEAN {<i>Glycine max</i> (L.) Merril} ROOTS TO THE APPLICATION OF <i>Gliocladium virens</i> Miller

Abstract Soybean plants are able to fix nitrogen (N) from the atmosphere through a mutualistic symbiosis between the Rhizobium japonicum Kirchner bacteria and the roots, by infecting the roots and forming root nodules and fixing N in the air. Research to determine the reaction after application of Gliocladium virens Miller on the development of root nodules on soybean plants. The study employed a Randomized Block Design (RBD) with 6 treatments and 4 replications, consisting of Control (without treatment), Gliocladium virens Miller 5 g, 10 g, 15 g, 20 g, 25 g/plant. The research results showed that the application of Gliocladium virens Miller at a dose of 25 g/plant was the best dose in helping the development of root nodules on soybean plants.