Abstract
This study aims to determine the nutrient status of N, P, K, CEC, and Organic-C of soil in rainfed rice in Lalowiu Village, district of Konda, South Konawe Regency. This research started from September to October 2021. Determination of sampling based on soil use age of 6, 15 and 25 years. For each land age, 3 soil samples were taken with a depth of 20 cm, then composited. The results showed that the nutrient status of total-N at the age of 6 years, namely 0,11%, was classified as low, while at the age of 15 and 25 years, were classified into very low (0,07% and 0,08%). Available-P at all ages were classified as a very low (1,78 ppm, 1,82 ppm, 1,64 ppm). Available-K at all ages were classified as a very low (2,03 mg 100g⁻¹, 1,77 mg 100g⁻¹, 1,81 mg 100g⁻¹). The Organic-C content at all ages were classified as low (1.46%, 1.00% and 1.08%). CEC at all ages were classified as moderate (24.00 me 100g⁻¹, 18.43 me 100g⁻¹ and 20.34 me 100g⁻¹). The longer rainfed rice soil are used without any return of organic matter, the lower of N, P, K, CEC and C-Organic in the soil.
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