Biofertilizers Application to Improve Growth of Maize and Soil Nutrients Betty Natalie Fitriatin, Muhammad Iqbal Maulana Yusuf, Emma Trinurani Sofyan and Anne Nurbaity E3S Web Conf., 316 (2021) 03020 Published online: 05 November 2021 DOI: 10.1051/e3sconf/202131603020