The effect of functional bacterial consortium on nutrient content of liquid organic

• Published in: IOP conference series. Earth and environmental science Vol. 1160; no. 1; pp. 12079 - 12084
• Main Authors: Sondang, Y, Muflihayati, Anty, K, Siregar, R
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 01.04.2023
• Subjects: Additives; Bacteria; bio activator; Compatibility; Consortia; consortium; Farm buildings; Fertilizers; formulas; Nutrient content; Organic fertilizers; Phosphorus pentoxide; Plant protection; Pseudomonas aeruginosa
• ISSN: 1755-1307; 1755-1315
• DOI: 10.1088/1755-1315/1160/1/012079

Abstract Bacterial compatibility testing is very important to determine which bacteria will be consorted as bio activators when making liquid organic fertilizer. Bacteria that are inoculated into the manufacture of liquid organic fertilizers must have a cooperative and synergistic relationship with fellow bacteria to be efficient in their role as bio activators. To obtain this potential, a compatibility test against bacterial isolates needs to be carried out so that liquid organic fertilizers will be made efficient and effective. The research purposes are to obtain the compatible properties of functional bacterial isolates and their impact on liquid organic fertilizer’s nutritional content. The study was carried out at the Plant Protection Laboratory and Greenhouse of the Payakumbuh State Agricultural Polytechnic, West Sumatra from July to September 2022. The research method began with the rejuvenation of the dry bacterial isolates of Pseudomonas aeruginosa, Bacillus subtilis, Bacillus cereus , and Bacillus thuringiensis . Followed by the compatibility test using the double culturing method, a total of 20 treatments with three replications. The bacterial consortium is inoculated into the manufacture of fertilizer. The results of the compatibility test against P. aeruginosa and genera of Bacillus showed all treatments were compatible which was indicated by the absence of a halo inhibition zone with a compatibility index value between 0.67-1 and could be combined in a consortium as a bio activator. The best P 2 O 5 , K 2 O, and Ca nutrient content is found in the formula of fertilizer with bone meal additives.