Bacillus U3 and Pseudomonas U4 are Able to Provide NPK and Produce Ligninase Enzymes Qualitatively

Abstract

Peat land is known as land that has low productivity because it contains very few macro and micro nutrients, making it less suitable for use as land for cultivating plants. One way to improve peatland fertility is by adding lignocellulolytic and NPK solubilizing bacteria which have the potential to act as biofertilizers. This study aims to evaluate the potential of Bacillus U3 and Pseudomonas U4 as biofertilizers by testing the solubilizing NPK and enzymatic activity of lignin peroxidase (LiP), manganese peroxidase (MnP), and laccase. The test was carried out qualitatively using standard methods to detect the presence and activity of NPK and the enzyme. The results showed that both bacterial isolates had significant resulte in solubilizing phosphate and enzymatic activity, indicating their potential as biofertilizers. The activities of LiP, MnP, and laccase in Bacillus U3 and Pseudomonas U4 show their ability to degrade lignin, which can increase nutrient availability in the soil. This shows the potential of both as effective biofertilizers in increasing the decomposition of organic matter and improving soil fertility, especially in peatlands that have low productivity.