Effect of pH on Different Manganese Media on Seed Viability of Seven Local Soybeans Varieties (Glycine max L. Merr)

Manganese (Mn) has two roles in plant metabolic processes: an essential micronutrient and a toxic element when it is excess. Mn toxicity favored acidic nature soils. However, may possible that Mangan affects crop growth even though neutral states. This study aimed to determine the effect of manganese on seed germination both low pH pH. The was compiled using Randomized Complete Block Design with factors soybean local varieties (Anjasmoro, Grobogan, Derap-1, Detap-1, Deja-1, Dega-1, dan Dena-1) differences media substrate levels (Mn 4.5, 6-7, control without 7). results showed at (acid condition) expressed worst as compared all treatments by inhibiting radicle development shorter roots growth. Germination under remained hampered but not bad media. Anjasmoro variety observed relatively tolerant pH, while Dega-1 Deja-1 were least tolerant. At conditions metal content, worse