Effects of Micronutrients (Mn and Zn) Fertilizer on the Growth and Production of Sorghum (Sorghum bicolor L.)

Micronutrients Mn and Zn are essential elements required in trace amounts, although they play an important role plant growth. This study aimed to investigate the impact of manganese (Mn) zinc (Zn) fertilizer on growth productivity sorghum. was conducted farmer’s field at Pasar 6 Kwala Mencirim Village, Sei Bingai District, Langkat Regency, North Sumatera started December 2020 until April 2021. A non-factorial randomized block design with eight treatments four replications used, consisted control (without fertilizer), 100% N, P, K (local recommendation), level combined 75% 50% dose fertilizer. Measurements were taken for height production. The data analyzed using ANOVA DMRT a significance 5%, RAE equation. showed that fertilizers significantly affected sorghum highest 4770 kg ha-1, while 2260 ha-1. concluded applying 1 increase yields reduces 25% use field.