One alternative to increase plant growth and improve soil quality sustainably is organic fertilizer. Based on previous studies, this study discusses how organic fertilizer affects plant growth and soil quality. The results of the study indicate that organic fertilizer can increase plant growth by providing nutrients gradually and supporting the activity of soil microorganisms responsible for decomposing organic matter. The use of organic fertilizers has also been shown to improve soil structure, increase water retention capacity, and enrich it. However, there are several obstacles when using organic fertilizers, such as longer decomposition times and inconsistent nutrient levels. Therefore, efforts to optimize the use of organic fertilizers must be carried out continuously to increase their capacity to support sustainable agriculture.
 

Soil microorganisms play an important role in increasing nutrient availability for maize plants through the processes of nitrogen fixation, phosphate solubilization, and humic acid production. These processes not only increase maize productivity but also reduce dependence on synthetic chemical fertilizers, thus supporting agricultural sustainability. This study explores the benefits of microorganisms such as Rhizobium, Azospirillum, Pseudomonas, and arbuscular mycorrhizal fungi in enhancing nutrient uptake, protecting plants from environmental stress, and improving soil quality. Challenges in the application of microorganism technology include adaptation to diverse environmental conditions and low farmer adoption. However, advances in genomic technology and biotechnology open up opportunities to optimize the benefits of soil microorganisms. The implementation of this microorganism-based technology has the potential to support efficient, environmentally friendly and sustainable maize farming.