The purpose of this study was to determine the effect of applying organic fertilizer to swallow manure on nutrients N, P, and K, as well as its effect on soil pH. The study will be conducted from April 2023 to May 2023. The implementation of the research is located in the Greenhouse and in the Laboratory of Physical Chemistry and Biology, Department of Soil Science, Faculty of Agriculture, Lambung Mangkurat University, Banjarbaru. This study was a pot experiment using a single-factor Complete Randomized Design. The treatment in this study was the administration of swallow droppings with several doses. The result of this study is that the application of swallow manure can increase the amount of N-minerals, P-available and, K-available, and affect soil pH in Ultisol soil and the more doses given, the higher the value of N-minerals, P-available and, K-available, and soil pH in Ultisol soil.