The influence of the composition of biodiversal fertilizers plant vegetative soybean plant (Glycine max (L.) Merrill) in inceptisol

Abstract

Soybean (Glycine max (L.) Merril) is a food commodity containing the highest vegetable protein among nuts and cereals. Fertilizer is a material that contains living microorganisms from microbes in the soil. This study aims to determine the effect of biological fertilizer composition on soybean plant height (Glycine max (L) Merrill) on inceptisol. This research has been conducted experimental USU Medan experiment. This research uses Non-Factorial Factorial Random Design. Control Treatment (T0): Giving N2 = 1.85 gr / polybag, basic fertilizer application on P2O5 = 3.09 gr / polybag and K2O = 1.85 gr / polybag. Treatment (T1): Mycorrhiza (M) 20 g / plant + basic fertilizer, Treatment (T2) Rhizobium (R) 20 ml / plant. Treatment (T3): Trichoderma sp. 20 ml / plant. Treatment (T4): inoculum Aspergillus sp. 20 ml + Provision of basic fertilizer, Treatment (T5): Giving Mycorrhiza 20 gr / plant (M) + Rhizobium (R) + inoculum of Aspergillus sp. 20 ml. Treatment (T6) Giving Aspergillus sp. + Rhizobium (R) + Trichoderma 20 ml + basic fertilizer. Treatment (T7) Giving Mycorrhiza (M) + inoculum of Aspergillus sp. + Trichoderma 20 ml + base fertilizer. Treatment (T8) Giving Mycorrhiza 20 gr + Rhizobium + Trichoderma sp. + inoculum Aspergillus sp. 20 ml + basic fertilizer. Observed Variables: Plant Height and Weight of root nodule. The result of research indicate that T8 treatment is the best treatment in increasing plant height that is 55.17 cm and highest root nodule weight that is 7.43 gr, the lowest in the treatment of T0 plant height is 45.83 cm and treatment of root nodule weight 4.96 gr.