Plant Growth Promoting Rhizobacteria (PGPR) is a group of beneficial soil microorganisms for soil fertility and crops. This study aims to show the effect of PGPR supplementation in the dose of NPK fertilizer on fresh weight and leaf chlorophyll content of pakchoy (Brassica rapa L.). There ere five treatment levels, consist of variation of NPK dosage and PGPR, namely: NPK 100% (A0P0), NPK 75% + PGPR 25% (A1P1), NPK 50% + PGPR 50% (A2P2), NPK 25% + PGPR 75% (A3P3), 100% PGPR (A4P4). Each treatment was repeated 5 times. The experimental design was Completely Randomized Design (RAL), the experimental results were analyzed by ANOVA (P <0.05), followed by Duncan test. Based on the experimental results, it was concluded that there was a significant effect of PGPR supplementation in the dose of NPK fertilizer on fresh weight and leaf chlorophyll content. The highest fresh weight was shown in the plant treated with NPK 25% + PGPR 75% (A3P3), while in the treated plants NPK 75% + PGPR 25% (A1P1) were able to accumulate the highest chlorophyll content among the other plant leaves.
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