RHIZOBIUM APPLICATION TO SOYBEAN (GLYCINE MAX L. MERRIL) GROWTH ON THE LAND POLLUTED BY FLY ASH WASTEHASAN BASRI JUMIN, ADE SULIANTO, SARIPAH ULPAH AND T. ROSMAWATYAbstract To day fly ash is pollution material also produced by pulp and paper industries. Fly ash with suitable dose promote the vegetative growth and generative component of soybean. Rhizobium promoted net assimilation rate, mean relative growth rate, and seed weight production. Rhizobium on 7.5 g/kg seed increased net assimilation rate until 0.0462 mg/cm2/day and mean relative growth rate until 0.135 g/day and 20.98 g per plant. When combination between Rhizobium and fly ash net assimilation rate increased until 0.553 mg/m2/day and mean relative growth rate until 0.1675 g/day and seed dry weight 22.67 g per plant. Planting soybean with Rhizobium promoted the nitrogen fertilizer efficiency which reached 199 percent.
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