Enhancing the maize growth and production by applying the phosphorus and potassium nutrients in inceptisol of Langkat Regency

Abstract Inceptisol is one of the soil types covering Langkat Regency. Unfortunately, has low chemical fertility and characterized by a small part macronutrients. To support maize growth in inceptisol, nitrogen, phosphorus, potassium are primary required nutrients. Hence, applying inorganic fertilizer strategies to solve this issue. This study was conducted at Sei Bingai District, Regency, from July November 2021. aims analyze effect phosphorus on production inceptisol. arranged Non-Factorial Randomize Complete Block Design with seven treatments four replications. These consist of: PK 0 (control), 1 (standard fertilization), 2 (50 % plus dose + 75 standard 3 (100 4 (150 75% 5 50 6 fertilization). The results show that contribute highest 9.300 kg/ha Relative Agronomy Effectiveness (RAE) value, 147 %. Fertilization 10 kg ha −1 Plus fertilization recommended for corn cultivation very economically feasible.