EVALUASI STATUS PADA BEBERAPA SIFAT KIMIA TANAH LAHAN SAWAH TADAH HUJAN DI DESA POMBULA JAYA KABUPATEN KONAWE SELATAN

Abstract

This research was carried out on rainfed rice fields in Pombula Jaya Village, South Konawe Regency from January to March 2022. The objectives of this study are: to determine the status of some soil chemical properties in rainfed lowland rice fields in Pombula Jaya Village, South Konawe Regency and to find out the recommendation of the right fertilizer dosage for rainfed rice fields in Pombula Jaya Village, South Konawe Regency. This research will use a free survey method. Soil sampling was done randomly (simple random sampling) where in each rainfed rice field plot there were 7 (seven) points, namely: Center Pombula I, Center Pombula II, North Pombula I, North Pombula II, South Pombula I, South Pombula II, and East Pombula. Soil samples taken from the research location were air-dried for 1 (one) week and then brought to the UPT Integrated Laboratory of Halu Oleo University for analysis of the nutrient content of nitrogen, phosphorus, potassium and C-organic, CEC, and soil pH. The results of the analysis of soil samples on rainfed rice fields are classified as low to high. Where the levels of N-total 0.07-0.13%, available-P 1.60-9.43 ppm, availabel-K 0.13-0.34 me/100g, C-organic 1.41-1.83%, KTK 19.15-29.79, and pH 4.45-5.86. Based on the results of soil analysis, it is recommended to fertilize rainfed rice fields in Pombula Jaya Village, South Konawe Regency, namely: urea 270-340 kg ha-1, SP-36 as much as 50-100 kg ha-1 and KCl 50-100 kg ha-1.