Asian Journal of Microbiology, Biotechnology & Environmental Sciences Paper

Vol 20, Feb. Suppl. Issue, 2018; Page No.(80-83)

IN VITRO TESTING OF INDOLE ACETIC ACID AND GIBBERELLIC ACID PRODUCTION OF BACTERIAL ISOLATES FROM MO-PLUS AND PAENIBACILLUS POLYMYXA

F. FARIDAH, BAHARUDDIN, NUR AMIN AND NASRUDDIN

Abstract

Application of biological fertilizers role in providing nutrients, decomposition of organic matter and provide a better environment rhizosphere. Biofertilizer is a component containing live microorganisms supplied to the soil as an inoculant to help provide specific nutrients for plants. Biological fertilizer can contain bacteria that are useful to stimulate plant growth,so that crop production remains high and sustainable. Biological fertilizer contains microorganisms that can degrade organic matter so as to provide some nutrients that can be absorbed by plants and produce natural enzymes and vitamins are beneficial for improving soil fertility. The MO Plus fertilizer serves as a bioactivator enriched with Azotobacter sp, Pseudomonas sp, Lactobacillus sp, Bradyrhizobium sp, Streptomyces sp and Rhizobium sp. The use of MO Plus is intended to stimulate the production and health of plants. Paenibacillus polymixa is one antagonist biopesticide can control several types of plant diseases, especially crackle disease in rice plants caused by Xanthomonas campestris pv oryzae. The biofertilizer MO Plus and Paenibacillus polymixa contain bacteria that can produce IAA and GA. This can be seen from the production of the MO Plus isolates of Pseudomonas fluorescent bacteria (IAA = 5,619 ppm and GA = 2,776 ppm), Lactobacillus (IAA = 6,175 ppm and GA = 2,177 ppm), Azotobacter (IAA = 3,381 ppm and GA = 1,986 ppm), Streptomyces (IAA = 3,651 ppm and GA = 2,575 ppm) and PB Paenybacillus polymixa isolates produced IAA (9.508 ppm) and GA (1,620 ppm) hormones.

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