Effects of Plant Growth-Promoting Rhizobacteria and Trichoderma sp. on Potato Growth on Medium Plains

The potato is a horticultural commodity with high economic value and consistent selling price. Indonesian production, however, remains lower than that of other Asian countries. One reason for this environmental sustainability has influenced the expansion cultivation on plateau, so medium plains have become an alternative. Aside from high-quality seeds, using plant growth-promoting rhizobacteria (PGPR) Trichoderma sp. as organic fertilizer strategic effort to boost yields plains. focus research was examine how PGPR affect growth potatoes This study carried out in Temanggung Sawangan, Magelang, Jawa Tengah, at altitude 480 m.a.s.l, complete random design four different treatments: P0 = control, Treatment P1 20 ml/10 liter water, P2 40 P3 80 gram/10 P4 150 P5 water + water. found combination treatment resulted better single treatment.
 Keywords: biopesticide, fertilizer,