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Some organic ingredients are known to contain nutrients and natural plant growth regulators (PGR), such as coconut water, young corn, sprouts, banana weevil, bamboo shoots. These materials are also a substrate for multiplying local microorganisms that are good for the soil. Therefore, the purpose of community service activities in the Exemplary Farmers Group, Sumberjambe Jember is to introduce, improve skills and implement local microorganism fermentation technologies (bio activators) using organic materials that contain natural plant growth regulators. This activity uses direct methods and practices for making natural PGR. The results achieved based on the indicators of the implementation of this training include the response of the attendance of the training participants attended by 30 people or 100% invited to attend the training event. Besides, during the extraction and fermentation activities of organic materials, it was seen that participants knew the sequence of procedures for making Natural PGR from the results of discussions and questions and answers. Also, a quantitative assessment of the success of the briefing activity was carried out through pre-test and post-test. The results obtained in the initial test mean the understanding of natural PGR is 25, while the post-test mean score after implementation is 75. Based on the pre-test and post-test results, there is a significant increase in participants knowledge about organic growth regulators. These results can also indicate that this activity can increase participants knowledge. In practice, about 80% of participants have been able to extract and mix ingredients for the fermentation process. The indicator of success is evident from the well-fermented natural PGR material which is characterized by a brown color and acidic odor resembling fermentation results.