Assessment of Soil Nutrient Testing using IoT-based Smart Farming Application for the Application of Organic Liquid Fertilizer from Saccharum officinarum Linn. Extract and Hevea brasiliensis Muell. Arg. Extract on Ultisol Soil Media. JAIP [Internet]. 2026 Jun. 22 [cited 2026 May 25];2(1):1-15. Available from: https://athallahpublishing.com/index.php/jaip/article/view/276