Effect of MgSO4 as a complement to NPK fertilizer on shallot growthJauhari Syamsiyah, Ganjar Herdiansyah, Komariah, Bardhian Cahyo Aji Gumilang, Lidya Zaela Wijaya and Hendricus William SiswantoroBIO Web Conf., 155 (2025) 01008DOI: https://doi.org/10.1051/bioconf/202515501008