Response of Soybean Growth (Glycine max (L.) Merril) on the Treatment of Refugia Plant and Nanosilica Fertilizer

—This study aims to analyse the growth response of soybean ( Glycine max (L.) Merrill) to the treatment of refugia plants and Nano silica fertilizer. The research was conducted at the Unit of Palawija Seed Development and Paddy, Agriculture Office of West Java Province, Plumbon, Cirebon Regency, from December 2018 to May 2019. The materials that were used include soybean varieties Grobogan, sunflowers, Zinnia elegant and marigolds, Nano silica fertilizers and NPK. This study uses a split plot design with the main plot was kind of refugia plants and sub-plots was Nano silica fertilizer concentration. The observed variables included plant height, stem diameter, number of leaves and number of branches, observations were made at the age of 14, 21, 28 and 35 days after planting (dap). The results showed that refugia plants had no effect on soybean growth, while the application of Nano silica fertilizer concentration of 1.75 ml/l and 3.50 ml/l gave the best effect on all components of soybean growth observed.