Rhizobacteria of Bali With Obvious Growth-Promoting Properties on Corn (Zea mays L.)

Corn productivity in Indonesia is still relatively low compared with other countries. Therefore, it necessary to increase the of corn by using rhizobacteria, which have multiple traits. This study was conducted obtain indigenous rhizobacteria Bali that traits, can produce indoleacetic acid (IAA), fix nitrogen from atmosphere, siderophores, colonize roots, seed germination, and promote growth corn. Isolation carried out rhizosphere plants belonging Gramineae family grows Island, Indonesia. Six isolates, namely, Sr3, Tb9, Rg1, Rg23, Al27, Jg8, could IAA, increased germination rate vigor index seedling. Among them, three significantly ( p <0.05) seeds, index, root dry weight shoot at age 7 days, were able roots. Compared control, treatment seeds ranging 5.04 13.05%. Based on analysis 16S rRNA gene, found these species Glutamicibacter nicotianae strain Rg1 (accession number OM349119), Brevibacillus invocatus Sr3 OM327515), Micrococcus luteus Jg8 OM362349). Under a greenhouse condition, all isolates nutrient uptake, leaf chlorophyll content, net assimilation rate, crop when control. These results suggested obviously promoted be developed as biostimulant yield Bali,