Fig. 2

The integrated effect of feldspar (FD), Filter cake (FC) treatments and their combinations with biofertilizer on total tuber weight (ton ha^− 1) of potato in season 2021/2022 (A), total tuber weight (ton ha^− 1) of potato in season 2022/2023 (B). Where MBc(-) = Without biofertilizer (Bacillus cereus); MBc(+) = With biofertilizer (Bacillus cereus); Control = Non-fertilizer; 100FD = 100% Feldspar; 100FC = 100% Filer Cake; 75FD + 25FC = 75% Feldspar + 25% Filer Cake; 25FD + 75FC = 25% Feldspar + 75% Filer Cake; 50FD + 50FC = 50% Feldspar + 50% Filer Cake. The values shown in figure are means three replicates. Means followed by the same letters are non-significantly different (p ≤ 0.05)