· Thesis · Skripsi, Thesis, Disertasi, dan Tugas Akhir
Nitrate is one of the major nutrients for growth of plants and algae. Nitrate is very soluble in water and is very unstable so it becomes unavailable. The main source of nitrate comes from soil erosion, fertilizer, waste and nitrogen (N) accumulation. N uptake is done either by symbiotic or non-symbiotic bacteri. The Faculty of Agriculture of UBT has 14 rhizobacterial isolates capable of digesting N, but it is not yet known how much it can absorb N in the from of nitrates that such rhizobacteria can provide. This study aimed to determine the extent of the ability of 14 N-bonding bacterial isolates to provide nitrate (NO3-). This research used a complete randomized design that consisted of 16 treatmenst and 2 replicates. The treatments were K0 (soil without treatmen), K1 (Nutrient Broth) P1 (B1(17)) P2 (B1(19)), P3 (B3(10)), P4 (B4(15)), P5 (B3(12)), P6 (B3(16)), P7 (B3(19)) P8 (B3(9)), P9 (B4(12)), P10 (B4(5)), P11 (B5(13)), P12 (B5(15)), P13 (B5(19)) dan P14 (B5(9)). At P1 to P14 treatments the soil was irrigated whit nitogen-fixing bacterial isolates suspension at a densityof 108 cfu/mL. The treatment of K0 was soil without the addition of Nutrient Broth (NB) and bacterial whereas K1 was soil added with 100 mL organic Nutrient Broth (NB). The soil was then incubated for 21 dasy. The parameters of this study were soil pH analysis and soil nitrate (NO3-) analysis.The results showed that the bacterial isolate was able to provide N in the from of nitrates ranging from 35,06 ppm to 45,42 ppm and bacterial isolate B3(12), was able to provide N of 45,42 ppm. The results of soil pH parameters showed that the isolates with the highest pH score was isolate B3(10) , (P3) with pH acore of 4,69 the lowest pH was of 4,20 obtained from isolates B4(12), (P9).
2025 · Book ·
Water quality is one of the primary factors influencing the success of shrimp aquaculture, as it supports optimal growth. Conversely, due to the accumulation of toxic compounds, poor water quality negatively affects shrimp health and can ultimately result in mortality. This study aimed to analyze water quality in traditional black tiger shrimp (Penaeus monodon) ponds on Tibi Island, Bulungan Regency. Sampling points were determined using purposive sampling across two pond plots-one measuring 1.3 hectares and the other 6 hectares. Water samples were collected from three points with three replications in each pond. Treatments included using probiotics: EM4 was applied three times in the smaller pond, and "Rica" treatment in the larger pond. Sampling was conducted monthly throughout the seeding, maintenance, and harvesting periods. Both physical and chemical parameters were measured. In the small pond, water temperature ranged from 28 31.67 °C, pH 5.87-7.27, dissolved oxygen 6.47-7 mg/L, salinity 9.67-17 ppt, ammonia 0.1-1.2 mg/., nitrite 0.03-0.42 mg/L, nitrate 0.3-0.61 mg/L, phosphate 0.04 0.05 mg/L, and alkalinity 13.33-80 mg/L. In the large pond, water temperature ranged from 29.9-32.03 °C, pH 5-7.4, dissolved oxygen 6.8 6.87 mg/L, salinity 10-15.33 ppt, ammonia 0.1-1.14 mg/L, nitrite 0.10 0.22 mg/L, nitrate 0.3-0.41 mg/L, phosphate 0.05 0.13 mg/L, and alkalinity 11.67-88.33 mg/L. The small pond treated with EM4 showed relatively better water quality. Several parameters did not meet the quality standards of the Indonesian Ministry of Marine Affairs and Fisheries Regulation No. 75/2016, including pH, ammonia, nitrate, nitrite, and alkalinity in the small pond, and pH, ammonia, nitrite, phosphate, and alkalinity in the large pond. Other parameters were within acceptable limits.
2025 · Thesis ·
Water quality is one of the primary factors influencing the success of shrimp aquaculture, as it supports optimal growth. Conversely, due to the accumulation of toxic compounds, poor water quality negatively affects shrimp health and can ultimately result in mortality. This study aimed to analyze water quality in traditional black tiger shrimp (Penaeus monodon) ponds on Tibi Island, Bulungan Regency. Sampling points were determined using purposive sampling across two pond plots-one measuring 1.3 hectares and the other 6 hectares. Water samples were collected from three points with three replications in each pond. Treatments included using probiotics: EM4 was applied three times in the smaller pond, and "Rica" treatment in the larger pond. Sampling was conducted monthly throughout the seeding, maintenance, and harvesting periods. Both physical and chemical parameters were measured. In the small pond, water temperature ranged from 28 31.67 °C, pH 5.87-7.27, dissolved oxygen 6.47-7 mg/L, salinity 9.67-17 ppt, ammonia 0.1-1.2 mg/., nitrite 0.03-0.42 mg/L, nitrate 0.3-0.61 mg/L, phosphate 0.04 0.05 mg/L, and alkalinity 13.33-80 mg/L. In the large pond, water temperature ranged from 29.9-32.03 °C, pH 5-7.4, dissolved oxygen 6.8 6.87 mg/L, salinity 10-15.33 ppt, ammonia 0.1-1.14 mg/L, nitrite 0.10 0.22 mg/L, nitrate 0.3-0.41 mg/L, phosphate 0.05 0.13 mg/L, and alkalinity 11.67-88.33 mg/L. The small pond treated with EM4 showed relatively better water quality. Several parameters did not meet the quality standards of the Indonesian Ministry of Marine Affairs and Fisheries Regulation No. 75/2016, including pH, ammonia, nitrate, nitrite, and alkalinity in the small pond, and pH, ammonia, nitrite, phosphate, and alkalinity in the large pond. Other parameters were within acceptable limits.
2020 · Book · Koleksi Perpustakaan
Tumbuhan herbal memiliki senyawa bioaktif yang mampu berperan sebagai agen dalam meningkatkan laju pertumbuhan organisme yang dibudidayakan. Kandungan senyawa bioaktif dari herbal karamunting seperti flavonoid, tanin, saponin, fenolik dan isoflavonoid, berpotensi sebagai agen yang mampu meningkatkan laju pertumbuhan dan sebagai tonik. Penelitian ini bertujuan untuk mengetahui pengaruh pemberian pakan alami Artemia salina yang telah diperkaya dengan ekstrak daun karamunting terhadap laju pertumbuhan benur udang windu (Panaeus monodon). Desain penelitian ini terdiri 4 perlakuan dan 3 ulangan, yaitu; kontrol (tanpa perendaman ekstrak), dan perendaman ekstrak daun karamunting dengan lama waktu perendaman yang berbeda (8, 16 dan 24 jam). Hasil penelitian menunjukkan bahwa perlakuan ekstrak dengan lama perendaman 24 jam memberikan nilai pertumbuhan berat spesifik tertinggi. yaitu 11,92%. Hasil ini juga menunjukkan bahwa pada pemeliharaan hari ke 0-20, benur dengan perlakuan mengalami perubahan panjang lebih dominan dibandingkan kontrol. Tingkat kelangsungan hidup benur untuk semua perlakuan, berkisar antara 70-83%. Kesimpulan bahwa bioenrichment Artemia salina menggunakan ekstrak daun karamunting (Melastoma malabathricum) dengan lama perendaman memberikan hasil yang signifikan terhadap pertumbuhan spesifik benur udang windu PL 20. Ekstrak daun karamunting memiliki potensi sebagai growth promotor.
2020 · Thesis · Skripsi, Thesis, Disertasi, dan Tugas Akhir
Tumbuhan herbal memiliki senyawa bioaktif yang mampu berperan sebagai agen dalam meningkatkan laju pertumbuhan organisme yang dibudidayakan. Kandungan senyawa bioaktif dari herbal karamunting seperti flavonoid, tanin, saponin, fenolik dan isoflavonoid, berpotensi sebagai agen yang mampu meningkatkan laju pertumbuhan dan sebagai tonik. Penelitian ini bertujuan untuk mengetahui pengaruh pemberian pakan alami Artemia salina yang telah diperkaya dengan ekstrak daun karamunting terhadap laju pertumbuhan benur udang windu (Panaeus monodon). Desain penelitian ini terdiri 4 perlakuan dan 3 ulangan, yaitu; kontrol (tanpa perendaman ekstrak), dan perendaman ekstrak daun karamunting dengan lama waktu perendaman yang berbeda (8, 16 dan 24 jam). Hasil penelitian menunjukkan bahwa perlakuan ekstrak dengan lama perendaman 24 jam memberikan nilai pertumbuhan berat spesifik tertinggi. yaitu 11,92%. Hasil ini juga menunjukkan bahwa pada pemeliharaan hari ke 0-20, benur dengan perlakuan mengalami perubahan panjang lebih dominan dibandingkan kontrol. Tingkat kelangsungan hidup benur untuk semua perlakuan, berkisar antara 70-83%. Kesimpulan bahwa bioenrichment Artemia salina menggunakan ekstrak daun karamunting (Melastoma malabathricum) dengan lama perendaman memberikan hasil yang signifikan terhadap pertumbuhan spesifik benur udang windu PL 20. Ekstrak daun karamunting memiliki potensi sebagai growth promotor.
