A Potential Of Plant Growth Promoting Rhizobacteria (Pgpr) As Growth Stimulantfor Arabika Coffee Plant (Coffea Arabica L.)

Abstract

Enhancement production Arabica coffee plants (Coffea arabica L.) are influenced by quality stages nursery. Quality nursery determined by type treatment fertilizer used, start from type and dose used. One of type fertilizer optimal biological use For coffee breeding is Plant Growth Promoting Rhizobacteria (PGPR). For optimizing use of PGPR is necessary exists combination of planting media compost in stages nursery . The purpose of studywasfor knowingtreatment best from results combination treatment between giving PGPR and compost to growth arabica coffee seed. This researchusedCompletely Randomized Design with 2 replications.First treatment consists from addition of PGPR as 0 ml, 20 ml, 40 ml, 60 ml and 80 ml and second treatment consists by givingcompost with comparison as much as 0 gr; 100 gr; 200 gr; 300 gr and 400 gr. Parameters observed in the study wasplant height, totalleavesand stem diameter. Observation result plantheightshowedthat treatment best indicated on the gift concentration of 60 ml PGPR with plantsheight as9.76 cm and the lowest in the control treatment with plant height as 6.45 cm. Observation of total leavestreatment best when additon60 ml of PGPR with totalleavesas many as 8.35 strands and the lowest in the control treatment with totalleavesas3.56 pieces. Observation of stem diameter showedthat the best result wastreatment PGPR additionof 40 ml with diameter of 4.67 mm. By general results testing show that addition ofPGPR with combination of compost media influencedsignificant to coffee growth.