Response of some varieties of corn (Zea mays L.) toward applying granular bio-fertilizer on dry land

Abstract Increasing the yield of corn production on dry land can be done by applying granular biological fertilizers. Rhizobacterial biological fertilizer (Biofertilizer) is a fertilizer that contains microorganisms whose presence can be either singly or in the form of a combination of several types, called a consortium. This research aims to obtain a combination of treatments between varieties and doses of granular biofertilizer. The research was designed using a split plot design with HSD 5%. The main plot uses 4 varieties: Bisi 99, Bisi 18, Pertiwi 6, and Pertiwi 3, while the subplots use 3 doses of granular biofertilizer: 50/100/150 g per plant. The research results show a real effect on growth and yield parameters, including plant height, number of leaves, stem diameter, cob location, cob weight, cob length, cob weight without Cornhusk, cob length without Cornhusk, cob diameter, dry weight, 100-grain weight and several corn varieties. In the combination treatment of the Bisi 99 variety with 50g granule fertilizer treatment per plant, the best results reached 242.27g per cob (15.98 tons/ha).