PENGARUH MIKROORGANISME LOKAL REBUNG DAN PLANT GROWTH PROMOTING RHIZOBACTERIA TERHADAP NITROGEN TANAH TOTAL, POPULASI BAKTERI DAN PRODUKSI KACANG TANAH (Arachis hypogaea L)

Abstract

The aim of this study was to explore the effect of local microorganism (MOL) bamboo shoots and plant growth-promoting rhizobacteria on total nitrogen soil, total bacterial population and groundnut production. The study was carried out in March-November 2021 at the Jatimulyo Experimental Field, and Laboratory of Soil Chemistry and Biology, Faculty of Agriculture, Brawijaya University. The study used a randomized block design consisting of nine treatments with three replication. The results showed that the application of local microorganisms and plant growth-promoting rhizobacteria (MOL and PGPR) did not show significantly different results in the total soil nitrogen, but the total soil nitrogen increased by 16% of control and the total bacterial population in the soil. The application of MOL and PGPR resulted in a total bacterial population (5.03 x 106 CFU mL-1 ) which was significantly different between treatments (58% of control). The application of MOL and PGPR did not show a significantly different in groundnut production but increased groundnut production from 1.2 t ha-1 to 2.4 t ha-1 (74% of control). The best treatment was M2P1 (55.5 L ha-1 MOL and 27.7 L ha-1 PGPR), with the most optimal content of microorganisms to support the growth and development of groundnut.