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-, Harsani
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APLIKASI IRIGASI TETES “RO DRIP” PADA LAHAN KERING -, Yusriadi; -, Harsani
Jurnal Ilmiah Ecosystem Vol. 20 No. 2 (2020): ECOSYSTEM VOL.20 NO 2 TAHUN 2020
Publisher : Lembaga Penelitian dan Pengabdian pada Masyarakat Universitas Bosowa

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Drip irrigation application is an irrigation system using a drip hose, which aims to make water use effective. Drip irrigation is not a new technology, but has long been developed especially on agricultural land that lacks water resources. Insufficient water sources on agricultural land, so farmers must rely on pumping systems from the nearest water source. With a direct pumping system will increase production costs. For one-time irrigation directly using pumping, farmers need at least 12 liters of fuel oil / day / ha. In other words, farmers must incur additional costs for irrigation purposes. Whereas for the time brackets of horticultural plants, it takes approximately three months for the plants to produce. If farmers have to irrigate land 3 to 4 times per month, farmers need 36 liters of fuel oil per month / ha. Assuming the price of premium fuel oil is Rp 6,650 / liter, then the farmer must at least pay an additional fee of Rp. 239,400 / month / ha. Therefore, the application of "RO DRIP" drip irrigation on dry land is expected to be able to reduce production costs for farmers. Application of drip irrigation is expected to be able to maximize the use of water so that farmers' production activities are more effective and efficient. Drip irrigation is very easy to apply because the materials and equipment used are very simple and easy to obtain. The advantages of this irrigation system are that the use of water will be controlled, the watering schedule can be arranged, the water needs for each plant can be met, and the provision of fertilizer can be directly through the reservoir. So that this irrigation system can simplify and save production costs for farmers.
PENGARUH KEPADATAN SUBSTRAT PERIFITON TERHADAP PERTUMBUHAN, SINTASAN DAN PRODUKSI BIOMASSA IKAN NILA SALIN (Oreochromis niloticus) DI TAMBAK Campu, Andi Awal; Malik, Andi Adam; -, Khairuddin; -, Harsani
Jurnal Ilmiah Ecosystem Vol. 20 No. 2 (2020): ECOSYSTEM VOL.20 NO 2 TAHUN 2020
Publisher : Lembaga Penelitian dan Pengabdian pada Masyarakat Universitas Bosowa

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This study aims to determine the effect of periphyton substrate density on the growth, survival, and production of tilapia saline (Oreochromis niloticus) biomass. This research was conducted for one month from January to February 2019 in the Soppeng Riaja District, Barru Regency, South Sulawesi Province. The containers used were 12 units of hapa-installed ponds (1x1m2). Periphyton substrate uses bamboo stems 8 cm in diameter and 1.2 m long. Then bamboo stems were stuck in each treatment except control. The design used was a completely randomized design (CRD) with 4 treatments and 3 replications. The results showed that the best weight growth was obtained in treatment D (72.2 grams / fish), C 42.5 grams / fish), B (28.3 grams / fish) and A (22.3 grams / fish), and growth the best length was obtained in treatments D (12.2cm), C (8.1cm), B (5.4cm) and A (4.4cm). Whereas the best survival rate was obtained in treatments D (96%), C (92%), B (88%) and A (84%), and the best saline tilapia biomass was obtained in treatment D (1.73 kg / m2), C (0.98 kg / m2), B (0.62 kg / m2) and A (0.47 kg / m2). Be concluded that different substrate densities affect the growth, survival, and biomass production of saline tilapia.
KARAKTERISTIK SIFAT KIMIA TANAH PADA BERBAGAI PENGGUNAAN LAHAN DI KECAMATAN MALLUSETASI KABUPATEN BARRU Junaidi, Sudirman; Putera, Muh. Ikbal; -, Harsani; Salim, Ade Putra
Jurnal Ilmiah Ecosystem Vol. 19 No. 03 (2019): ECOSYSTEM VOL.19 NO 3 September - Desember 2019
Publisher : Lembaga Penelitian dan Pengabdian pada Masyarakat Universitas Bosowa

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The research was conducted in the District Mallusetasi Barru which took place in April and August 2018. This study aims to know the characteristics of soil chemical properties in a variety of land use in the district Mallusetasi Barru. Decision 27 points samples taken at the study site using methodssurvey, using a map of land use resulting from Arc View GIS applications. The survey results produce primary data were then analyzed in the laboratory to determine the characteristics of soil chemical properties in District Mallusetasi Barru.Soil Chemical analysis carried out in the Laboratory of Chemistry and Soil Fertility Hasanuddin University, Makassar with the data analysis is the CEC, Soil pH, Magnesium (mg), Saturation bases, Potassium (K), Na, organic C (%) and Calcium (ca), The results of this study indicate thatchemical properties of Ca, Mg, K, Na, CEC, KB and C-Organic has a moderate to high criteria that affect the use of land in District Mallusetasi Barru
Co-Authors -, Yusriadi Andi Adam Malik Campu, Andi Awal Junaidi, Sudirman Khairuddin - Muhammad Ikbal Putera, Muhammad Ikbal Salim, Ade Putra