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Nunik Lestari
Universitas Negeri Makassar
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Journal : Jurnal Agritechno

 1 
EVALUASI KESESUAIAN LAHAN PENGEMBANGAN KOMODITI TANAMAN PANGAN BERBASIS SPASIAL DI KEC. TANETE RIAJA, KAB. BARRU Samsuar; Muhammad Tahir Sapsal; Mahmud Achmad; Husnul Mubarak; Nunik Lestari
Jurnal Agritechno Jurnal Agritechno, Vol. 13, Number 2, Oktober 2020
Publisher : Depertemen Teknologi Pertanian Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/at.v13i2.368

Abstract

Increasing land productivity, especially in the agricultural sector, are absolutely necessary at this time. One effort that can be done is by evaluating the characteristics of the land in order to obtain suitable information for the development of agricultural commodities in an area. The purpose of this study was to provide information on land characteristics and to analyze the level of land suitability for the development of food crop commodities (rice, corn, soybeans and cassava). The land characteristic parameters observed included climate, land morphology, soil physical and chemical properties. The results show that it is possible to develop food crops in Tanete Riaja District, even though only in the S2 and S3 categories. The slope factor is the main obstacle in the development of this commodity, so that crop management such as terracing and intercropping systems is an alternative cropping model that can be implemented. Low soil fertility and acidic soil pH are manageable factors that can be improved to increase soil quality.
Kinerja Cabinet Dryer pada Pengeringan Jahe Merah dengan Memanfaatkan Panas Terbuang Kondensor Pendingin Udara Nunik Lestari; Samsuar Samsuar; Ervi Novitasari; Khaidir Rahman
Jurnal Agritechno Jurnal Agritechno, Vol. 13, Number 1, April 2020
Publisher : Depertemen Teknologi Pertanian Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (620.368 KB) | DOI: 10.20956/at.v13i1.250

Abstract

Red ginger is rich in antioxidants and active ingredients, so the drying process should be carried out using low temperatures. Drying red ginger at low temperatures can be done using a cabinet dryer whose heating source comes from the wasted heat of the AC condenser. The purpose of this study was to test the performance of cabinet dryer with a heating source derived from the wasted heat of an AC condenser, on drying red ginger, and with several different levels of drying load. Performance testing was carried out with 600, 900, and 1200 grams of red ginger, which were then divided into 6 drying racks. Data observations and analyzes include drying temperature, relative humidity, moisture content, drying rate, heat used to increase material temperature, heat used to evaporate material water, energy requirements for the drying process, and energy efficiency. The results show that the cabinet dryer with a heating source from the wasted heat of the AC condenser is able to dry the red ginger to reach a moisture content of 9.24-10.71% in accordance with SNI standards, with a drying time of 6.5-8.7 hours. The energy used to dry red ginger ranges from 1281.67-2583.86 kJ. Drying efficiency achieves from each treatment ranges from 14.04-21.15%.
Estimasi Nilai Evapotranspirasi Potensial dalam Rangka Optimalisasi Pemanfaatan Irigasi Permukaan di Kabupaten Wajo Samsuar Samsuar; Husnul Mubarak; Nunik Lestari
Jurnal Agritechno Jurnal Agritechno Vol. 15, Nomor 2, Oktober 2022
Publisher : Depertemen Teknologi Pertanian Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/at.vi.935

Abstract

Indonesian government is trying to increase the production of agricultural commodities in order to support the food self-sufficiency program. To support this program, the availability of irrigation facilities is important in supporting the productivity of agricultural field. Climate change and changes in agricultural systems have an impact on changes in the need of irrigation water in crop cultivation. The decreasing availability of water for agriculture encourages us to be able to use water more efficiently, especially for irrigation water. The purpose of this research is to predict the ETp value as a basis for determining plant water requirements, to determine the most suitable ETp model, to validate the prediction results of ETp values ​​using direct measurements in the field, and to obtain information related to climate factors that have the most influence on the ETp rate. The measurement of the ETp value is based on the use of Merra-2 global climate data and climate data from field measurements. ETp models used are Blaney-Criddle, Hargraves, Remanenko, Penman and Penman-Monteith. Research results showed that the ETp rate in Wajo District tended to increase during the July-October period indicating an increase in water demand in crop cultivation. The most influential climate parameter in determining the Penman Monteith ETp rate is solar radiation. The results of the ETp analysis using global data show that the Penman model is the closest model to the Penman Monteith ETp model from field measurements.
Pemodelan Kinetika Pengeringan Daun Bidara (Ziziphus spina-christi (L.)) Dengan Metode Pengeringan Tenaga Surya Nunik Lestari; Samsuar Samsuar
Jurnal Agritechno Jurnal Agritechno Vol. 15, Nomor 2, Oktober 2022
Publisher : Depertemen Teknologi Pertanian Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/at.vi.941

Abstract

The drying method used can affect the drying characteristics and quality of the final product such as color parameters. The purpose of this research is to study the kinetics of Z. spina-christi leaves drying, find a mathematical model that best fits the drying characteristics, and analyze the color change of dried Z. spina-christi leaves and their brew. The drying process is carried out with 2 treatments, namely using a solar dryer and by drying in an open space using direct sunlight. There are 13 mathematical models of thin layer drying selected to simulate the drying characteristics of Z. spina-christi leaves. Identification of the Lab* value is used to calculate the browning index of the leaves due to the drying method used. The results stated that the solar power dryer could increase the drying rate of Z. spina-christi leaves, thus shortening the drying time. The Diffuision Approach model is the most accurate mathematical model in describing the drying characteristics of Z. spina-christi leaves for the two drying methods tested based on the resulting constant values. Each drying method affects the browning reaction of the dried Z. spina-christi leaves which also has an impact on the color of the brew, where drying in direct sunlight will produce a darker color of the dried leaves and brew.
Co-Authors Ainun Septia Nengsi Ramli Andi Alamsyah Rivai Andi Izdihar Sricendani Andi Maulidyisah Ekasalim Andi Muhammad Akram Mukhlis Andi Sukainah Andini Andini Ervi Novitasari Husain Syam Husnul Mubarak Ilman Hidayat Irwan Iwan Jamaluddin Jamaluddin Khaidir Rahman Lahming Lahming M.Pd S.T. S.Pd. I Gde Wawan Sudatha . Mahmud Achmad Muhammad Fahri Wahyudi Muhammad Nur Jumadil Muhammad Nur Jumadil Muhammad Rais Muhammad Tahir Sapsal Nur Fitri Ramadhani Nurazizah Nurazizah Nurhayati Nurhayati Ratnawaty Fadilah Samsuar Samsuar Samsuar Samsuar Samsuar Widya Astuti Rinduwati