Tambak tradisional sebagai wadah terkontrol dimanfaatkan oleh masyarakat untuk memelihara ikan, udang dan kepiting. salah satu faktor penentu keberhasilan budidaya udang di tambak sistem tradisional adalah ketersediaan unsur hara secara berkesinambungan seperti nitrat, fospat dan kalium. tujuan penelitian ini adalah untuk mengkaji unsur hara di tambak udang windu sistem tradisional. pengambilan sampel kualitas air dilakukan sebanyak 12 kali, sedangkan sampel tanah sebanyak 4 kali. analisis data dilakukan secara deskriptif dengan membandingkan standar baku mutu (bm) kualitas air dan tanah tambak berdasarkan peraturan menteri kelautan dan perikanan nomor 75 tahun 2016, peraturan menteri pekerjaan umum dan perumahan rakyat nomor 21 tahun 2015. hasil pengukuran variabel kualitas air tambak selama penelitian adalah suhu: 27-34,2 ℃, ph air: 7,8-8,31, salinitas: 10-20 ppt, fospat: 0,02-0,18 ppm, kecerahan: 45-70 cm, ammonia: 0,01-1,12 mg/l, nitrit: 0,02-0,06 mg/l, nitrat: 0,8-2,76 mg/l, kalium: 10,23-15,43 mg/l, dan corganik: 10,95-15,44 mg/l. sedangkan variabel kualitas tanah yaitu ph tanah: 3,11-3,93, c-organik: 1,98-2,63 %, fosfat: 18,26-21,46 ppm, nitrat: 5,29-17,72 mg/l, dan kalium: 15,28-34,75 me/100 gr. unsur hara pada air di tambak tradisional udang windu yang tidak sesuai standar baku mutu adalah nitrat dan kalium. kandungan unsur hara pada air yang sesuai standar baku mutu adalah fospat. unsur hara tanah yang tidak sesuai standar baku mutu adalah fosfat dan kalium, sementara unsur hara tanah yang sesuai baku mutu adalah nitrat kata kunci: unsur hara, air, tanah, tambak

Traditional ponds as the community utilize controlled containers to raise fish, shrimp, and crabs. one of the factors determining the success of shrimp farming in traditional pond systems is the continuous availability of nutrients such as nitrate, phosphate, and potassium. this study aimed to assess the nutrients in conventional tiger shrimp ponds. water quality sampling was conducted 12 times, while soil samples were 4 times. data was analysed descriptively by comparing the quality standards (bm) of water quality and pond soil based on the regulation of the minister of marine affairs and fisheries no. 75 of 2016 and regulation of the minister of public works and housing no. 21 of 2015. the measurement results of pond water quality variables during the study were temperature: 27-34°c, water ph: 7.8-8.31, salinity: 10-18 ppt, phosphate: 0.02-0.18 ppm, brightness: 44-70 cm, ammonia: 0.01-1.12 mg/l, nitrite: 0.02-0.06 mg/l, nitrate: 0.8-2.76 mg/l, potassium: 10.23-15.43 mg/l, and corganic: 10.95-15.44 mg/l. while soil quality variables are soil ph: 3.11-3.93, c-organic: 1.98-2.63%, phosphate: 18.26-21.46 ppm, nitrate: 5.29-17.72 mg/l, and potassium: 15.28-34.75 me/100 g. nutrients in water in traditional tiger shrimp ponds that do not meet quality standards are nitrate and potassium. the nutrient in the water that complies with quality standards is phosphate. soil nutrients that do not meet quality standards are phosphate and potassium, while soil nutrients that meet quality standards are nitrate. keywords: nutrients, water, soil, ponds