<![CDATA[Growth, production and fruit quality of mangosteen are determined by the nutrient content of the soil in their plantations. Analysis of soil chemical properties, such as pH and organic matter content, as well as other nutrients content in mangosteen plantations is very important to determine the level of soil fertility. The soil analysis result should be the base to calculate fertilizer recommendations to improve soil fertility and increase mangosteen yields. This research was conducted in Kamba village, Pamona Timur district, Poso regency, from Sept 2024 to March 2025. The objective of this study was to identify the chemical properties of soil in mangosteen plantations in Kamba Village and to obtain recommendations for fertilization to increase the quantity and quality of mangosteen fruit in the future. This study used a qualitative descriptive method with a land survey and supported by laboratory analysis. Soil samples were taken from 10 mangosteen trees located in the north, east, west, south and center. The soil was taken from four different points under each tree and then combined. After that, the samples were prepared and then analyzed in the laboratory. Based on the results of soil analysis, the content of macronutrients and CEC in mangosteen plantations in Kamba Village were categorized as very low - medium category, so additional nutrients are needed to increase plant production. The recommended fertilizer dose for P is 500-1200 g/plant, for K is 621 - 921 g/plant and for Ca is 988 g/plant ]]>
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