EFFECT OF RHIZOBACTERIA AND ARBUSCULAR MYCORRIZHAL (MA) ON GROWTH OF POTATO (SOLANUM TUBEROSUM L)

Potato is main staple food in several region of the world. The research aimed to study the effect of rhizobacteria and arbuscular mychorrizal to potato growth.The research was conducted in Balai Pengkajian Teknologi Sumatera Barat (BPTP) and Laboratory of Microbiology, Faculty of Agriculture, Andals University, West Sumatera, Indonesia from October 2017 to May 2018West Sumatera, Indonesia. The factorial design in randomized block design (RBD) was used in the assay. The first factor was rhizobacteria isolates and second factor was arbuscular mychorrhizal (AM). The rhizobacteria isolates were no rhizobacteria, RZ1.L2.4, RZ1.L2.1, RZ2.L2.1. The AM doses were 5 g/plant, 10 g/plant and 15 g/plant. The result showed that he best treatment was RZ2.L2.1 and 5 g/plant of MA dose for potato growth.