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All Journal Jurnal Ilmu Pertanian Indonesia Jurnal Ilmu Tanah dan Lingkungan (Journal of Soil Science and Environment) Geoplanning : Journal of Geomatics and Planning Jurnal Ilmu Komputer dan Agri-Informatika Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat Jurnal Sains & Teknologi Modifikasi Cuaca Syntax Literate: Jurnal Ilmiah Indonesia Syntax Idea Jurnal Scientia
Yusuf, Sri Malahayati
Department Of Soil Science And Land Resources, Faculty Of Agriculture, IPB University, IPB Darmaga Campus, Darmaga, Bogor, 16680, Indonesia
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ANALYSIS OF THROUGH FALL AS EFFECTIVE RAIN INFORMATION IN VEGETATED LANDS Enni Dwi Wahjunie; Wahyu Purwakusuma; Eko Taufik Wirawan; Sri Malahayati Yusuf; Yayat Hidayat
Jurnal Scientia Vol. 12 No. 03 (2023): Education, Sosial science and Planning technique, 2023 (June-August)
Publisher : Sean Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58471/scientia.v12i03.1662

Abstract

Rainfall is the water main source on the world. Rainwater that can be used for life is water that reaches the soil surface (effective rain), and then be stored in the soil or as surface runoff that causes flooding. The total of rainwater that reaches the soil surface on vegetated lands is highly dependent on the total of interception (water retained and absorbed by vegetation to then evaporate to atmosphere). The remaining rainwater that is not retained by vegetation will flow through the stem (stem flow) and through fall from the plant canopy to the soil surface. The total of rain water intercepted depends on the nature of the rain and the vegetation. Therefore, this study wanted to examine the total of through fall related to the type of vegetation and the rain characteristics. The research was conducted at Dusun Besar, Kayong Utara Regency, West Kalimantan during the 2021 rainy season, on a slope transect from flat land to hills. The transect was divided into several slope classes, then on each slope class were observed of the vegetation type, rainfall, through fall, and intercept. Observations showed that the through fall in each land use was, teak on slope I (J;I) was 74.81%; Coconut on slope I (K;I) was 74.41%; Durian on slope II (D,II) was 50.64%; Durian on slope IV (D;IV) was 59.58% and forest on slope IV (H;IV) was 54.58%. The greater through fall is in line with the greater and more rain frequent, and the smaller of plant area canopy.
Peranan Soil Tilth Terhadap Produktivitas Bawang Merah Enni Dwi Wahjunie; Sri Malahayati Yusuf; Raissa Syahputri Hairani
Syntax Idea 3330-3340
Publisher : Ridwan Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46799/syntax-idea.v6i7.4232

Abstract

Bawang merah merupakan salah satu komoditas pangan yang penting, sehingga lahan produksinya perlu dipertahankan. Apabila produktivitas lahannya menurun, sangat potensi beralih fungsi menjadi lahan penggunaan lain. Sentra produksi bawang merah terbesar di Indonesia berada di Kabupaten Brebes, yang dikembangkan di berbagai jenis tanah dengan karakter berbeda. Perbedaan jenis tanah tersebut telah menunjukkan perbedaan produksinya. Sebagai tanaman umbi, bawang merah memerlukan media tanam yang baik (soil tilth), antara lain konsistensi dan kemampuan mengembang mengkerut tanah. Oleh karena itu, penelitian ini ingin mengkaji peranan soil tilth dan kemampuan mengembang mengkerut tanah terhadap produktivitas bawang merah. Penelitian dilakukan melalui tahapan survei lokasi pengembangan bawang merah di Kabupaten Brebes, pengumpulkan data produksinya di berbagai jenis tanah sentra produksi, analisis sifat-sifat tanah terutama konsistensi dan COLE (coeficient of linier extensibility), dan analisis keterkaitan sifat tanah terhadap produksi bawang merah. Hasil penelitian menunjukkan bahwa budidaya bawang merah di Kabupaten Brebes berada di tanah Kambisol Eutrik, Gleisol Eutrik, dan Mediteran Haplik. Kambisol Eutrik memiliki produktivitas bawang merah tertinggi diikuti oleh Mediteran Haplik dan Gleisol Eutrik. Konsistensi dan nilai COLE tanah berbeda antar jenis tanah. Indeks plastisitas, jangka olah, dan nilai COLE dipengaruhi oleh kadar klei dan bahan organik tanah. Semakin tinggi kadar klei dan makin rendah kadar bahan organik, sifat olah tanah makin buruk dan produksi makin rendah.
Water Balance Prediction by Simulating Land Use Planning and Water Retention Infrastructure in Upper Cisadane Sub-Watershed, West Java, Indonesia Yayat Hidayat; Latief Mahir Rachman; Enni Dwi Wahjunie; Dwi Putro Tejo Baskoro; Wahyu Purwakusuma; Sri Malahayati Yusuf; Fulki Dwiyandi Araswati
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol 14 No 2 (2024): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (JPSL)
Publisher : Pusat Penelitian Lingkungan Hidup, IPB (PPLH-IPB) dan Program Studi Pengelolaan Sumberdaya Alam dan Lingkungan, IPB (PS. PSL, SPs. IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpsl.14.2.415

Abstract

Currently, water resources management is still focused on on-site water resources infrastructure to achieve optimal water utilization, with almost never considered land management in which water resources are produced naturally. The research aim is to study the water balance in the Upper Cisadane Sub-Watershed, and to simulate a land use plan and development of water resource infrastructure to fulfill the need for water in the Upper Cisadane Sub-Watershed using the SWAT (Soil and Water Assessment Tool) model. Existing water availability was calculated using stream discharge data from River Flow Measurement Station Empang, whereas water demand has been analyzed for domestic, industries, agriculture, fisheries, and animal husbandry. Totally, water availability in the Upper Cisadane Sub-Watershed was ± 222.9 MCM (Million Cubic Meters) year-1, which was higher than the demand for water of as much as ± 209.8 MCM year-1 and resulted in a water surplus of ± 13.1 MCM year-1. However, water availability was not evenly distributed throughout the year, and there was always a water deficit in the dry season. To overcome drought during the dry season, five simulations of land use management and construction of water retention infrastructure were carried out using the SWAT model. The water deficit in the Upper Cisadane SubWatershed will be overcome by the consistent application of the spatial plan of West Java Province, reforestation of converted forest areas, applied agroforestry in agricultural land, and development of a reservoir with a storage capacity of 30 MCM.
Analisis Korelasi Sifat Biologi, Kimia dan Fisika Tanah pada Berbagai Ketinggian Tempat di Bandung, Jawa Barat Indri Hapsari Fitriyani; Rahayu Widyastuti; Sri Malahayati Yusuf; Apsari Putri Wulandari
Jurnal Ilmu Tanah dan Lingkungan Vol 25 No 2 (2023): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jitl.25.2.64-70

Abstract

Kabupaten Bandung memiliki ketinggian tempat antara 675 mdpl – 2,100 mdpl dengan suhu udara berkisar 14oC sampai dengan 30oC. Perbedaan ketinggian tempat dapat menimbulkan perbedaan iklim dan cuaca sehingga dapat mempengaruhi transformasi hara dan populasi mikrob di dalam tanah. Penelitian ini bertujuan untuk mengetahui korelasi sifat biologi dan kimia tanah, serta kaitannya antara sifat kimia dan fisika tanah pada berbagai ketinggian tempat di Bandung, Jawa barat. Pengambilan sampel tanah menggunakan metode Purposive Random Sampling dengan 5 kali ulangan. Sampel tanah terganggu diambil pada kedalaman 0-20 cm sebanyak ±1 kg, sedangkan contoh tanah utuh diambil menggunakan ring sampler. Pengambilan sampel tanah meliputi empat ketinggian tempat yaitu ketinggian 600 mdpl penggunaan lahan tanaman kol, ketinggian 1000 dan 1200 mdpl penggunaan lahan tanaman selada, serta ketinggian 1400 mdpl penggunaan lahan perkebunan kopi. Hasil analisis menunjukkan bahwa pada ketinggian 1000 mdpl populasi bakteri pelarut fosfat (BPF) dapat tumbuh optimum sebesar 93.6 x 103 CFU g-1 dengan pH tanah agak masam, P-Total sangat tinggi, dan P-Tersedia sedang. Populasi fungi dapat tumbuh optimum sampai ketinggian 1200 mdpl. Total populasi fungi berkorelasi tinggi dengan unsur hara P-Total dan N-Total di dalam tanah. Respirasi tanah berkorelasi positif dengan semua parameter yang berhubungan dengan sifat kimia tanah. Nilai bobot isi terendah pada ketinggian 1200 mdpl bersesuaian dengan nilai C-organik dan porositas tertinggi pada ketinggian tersebut.
Study of Two Different Field Measurement Methods of Infiltration: Falling Head and Constant Head, at Various Hydraulic Head Wahyu Purwakusuma; Sri Malahayati Yusuf; Enny Dwi Wahjunie
Jurnal Ilmu Tanah dan Lingkungan Vol 26 No 1 (2024): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jitl.26.1.54-59

Abstract

Two field measurement of infiltration rate methods had been performed on Latosol (Oxic dystrudept) Dramaga Bogor in order to investigate the opportunity to generate different result due to the different of hydraulic head applied and the different way of water was supplied. They were constant head and falling head methods. Falling head method was done in two different ways, namely within a certain time interval and within a certain water level interval. Hydraulic head used during measurement were of 10 cm, 15 cm, and 20 cm. The falling head and constant head method, clearly, generated different minimum infiltration rate values The falling head method measured on a fixed time interval generated almost the same values of minimum infiltration rate, respectively of 4.8 cm hour -1, 5.5 cm hour -1, and 4.8 cm hour -1 at 10 cm, 15 cm, and 20 cm hydraulic head. The falling head method based on bulk water level interval at 10 cm, 15 cm, and 20 cm generated minimum infiltration rate values respectively of 13.2 cm/hour, 12.8 cm/hour, and 18.8 cm/hour. The constant head method at 10 cm, 15 cm, and 20 cm hydraulic head generated minimum infiltration rate values respectively of 11.0 cm/hour, 18.5 cm/hour, and 19.0 cm/hour. The values were higher than of the fixed time interval based falling head method. Infiltration field measurement using the falling head method either based on time interval or water level interval did not show an increasing trend of minimum infiltration rate values due to the increase of hydraulic head. However, the infiltration field measurement using constant head showed an increasing trend of the minimum infiltration rate values due to the increase of hydraulic head.
Prototipe Mobile GIS Kandungan Hara Lahan Spesifik Lokasi Adrianto, Hari Agung; Emilia Syafitri; Yani Nurhadryani; Baba Barus; Sri Malahayati Yusuf; Desi Nadalia
Jurnal Ilmu Komputer dan Agri-Informatika Vol. 10 No. 1 (2023)
Publisher : Departemen Ilmu Komputer, Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jika.10.1.70-85

Abstract

Untuk memenuhi kebutuhan pangan yang semakin tinggi maka produktivitas usaha pertanian perlu ditingkatkan. Salah satu yang penting dilakukan untuk mendorong peningkatan produksi adalah menyediakan informasi karakteristik hara lahan kepada petani secara akurat, tepat dan mudah. Jika petani memahami kondisi area yang ditanami maka mereka dapat menentukan teknik budidaya yang sesuai. Dengan semakin banyaknya petani yang menggunakan smartphone, maka penting adanya sistem informasi geografis yang berjalan di perangkat mobile (mobile GIS) yang dapat memberikan informasi kandungan hara lahan spesifik lokasi. Penelitian ini akan mengembangkan prototipe mobile GIS untuk perangkat berbasis Android. Diharapkan dengan aplikasi ini petani dapat menentukan lokasi yang menjadi perhatian melalui menu pencarian lokasi atau menggunakan GPS di perangkat. Setelah lokasi ditentukan, sistem akan memperlihatkan peta dan tabel kandungan hara di wilayah tersebut. Aplikasi ini menghasilkan fitur utama berupa peta yang menampilkan kandungan nitrogen, phospor dan kalium serta kondisi keasaman tanah (pH) di lokasi tertentu di Jawa Barat. Sistem yang dikembangkan dilengkapi dengan petunjuk penggunaan fitur dan glosarium untuk membantu pengguna dalam menggunakan aplikasi dan memahami istilah penting yang terdapat di dalam aplikasi. Prototipe yang dihasilkan merupakan produk awal yang bersifat umum dan merupakan bagian dari usaha untuk mencari bentuk interaksi antarmuka yang tepat dan arsitektur sistem yang adaptif.
Use of Sphingomonas yunannensis to Improve Soil Drought Stress in Chili Plants Ramadhani Sri Astuti, Andi Febrianti; Rahayu Widyastuti; Yusuf, Sri Malahayati
Jurnal Ilmu Pertanian Indonesia Vol. 30 No. 1 (2025): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18343/jipi.30.1.195

Abstract

The availability of water plays an important role in plant growth. However, water availability depends on the climate and irrigation channels; therefore, there is little water available for plants during the dry season. Bacteria found in soil can produce exopolysaccharides to survive under extreme land conditions, namely, during drought conditions. The research objectives were to (1) isolate and select bacteria originating from dry land for use on chili plants and (2) determine the effect of water supply frequency and select soil bacteria on chili plants. The experiment consisted of two stages. (1) Bacterial selection and characteristics, which included exopolysaccharide bacteria selection on specific ATCC No. media. 14; pathogenicity test (hypersensitivity and hemolysis); characterization and biochemical testing including pH, temperature, salinity, oxidation, and catalase; bacterial functional tests (P and K solvents and nitrogen-fixing); and (2) tests of chili plants in the greenhouse. The treatment consisted of two factors: (a) application of selected bacteria, (b) frequency of water application (every 1, 2, 3, and 5 days), and (3) molecular identification of selected bacteria. The results showed that the best growth of chili plants was obtained by treating them with bacteria and watering them every other day. Molecular identification demonstrated that the selected bacteria was Sphingomonas yunannensis, which can grow under environmental conditions affected by drought. Keywords: exopolysaccharides, drought, Sphingomonas yunannensis, chili plants
Co-Authors Aditia Sapto Utomo Ania Citraresmini Apsari Putri Wulandari Aris Purwanto Baba Barus Budi Darmawan Supatmanto Budi Darmawan Supatmanto, Budi Darmawan Desi Nadalia Dwi Mei Lawaswati Dwi Putro Tejo Baskoro Eko Taufik Wirawan Elianah Emilia Syafitri Enni Dwi Wahjunie Enny Dwi Wahjunie Fulki Dwiyandi Araswati Hari Agung Adrianto Indri Hapsari Fitriyani Kukuh Murtilaksono Kukuh Murtilaksono Kukuh Murtilaksono Latief Mahir Rachman Latief Mahir Rachman Latief Mahir Rahman Nurul Rahmalia Purwakusuma, Wahyu R.K. Astuti RAHAYU WIDYASTUTI Raissa Syahputri Hairani Ramadhani Sri Astuti, Andi Febrianti Syaiful Arifin Taufik Bachtiar Yani Nurhadryani Yayat Hidayat