Muslimah, A., Wagiono, W., & Sugiono, D. (2021). The effect of giving silica and npk fertilizers at different spacings on the growth and yield of rice (Oryza sativa l.) Ciherang varieties. Jurnal Ilmiah Wahana Pendidikan, 7(8), 770-784. https://doi.org/10.5281/zenodo.5810402