Rona Teknik Pertanian最新文献

{"title":"Phosphate Potential from Septic Tank in Surabaya City, Indonesia","authors":"Ghina Rizqina Ersa, E. Soedjono, A. Slamet, E. Nurhayati","doi":"10.17969/rtp.v16i1.30556","DOIUrl":"https://doi.org/10.17969/rtp.v16i1.30556","url":null,"abstract":"AbstractPhosphate scarcity will occur if humans do not currently manage the phosphates available in nature with good management. Phosphorus rocks are a natural source of phosphates, whose availability in nature is dwindling due to the large demand for phosphates in the world, especially in agriculture. It is necessary to launch a renewal that involves the recovery of phosphates from fecal sludge. Fecal sludge contains a lot of nutrients that have accumulated from the food we eat. Due to the lack of sewage system distribution in Indonesia, phosphate recovery uses septic tank sludge that has been transported to the Fecal Sludge Treatment Plant. This is one of the potential resources. The purpose of this study was to see the potential (presence) of phosphates in domestic wastewater in Surabaya City, Indonesia. This research was carried out by accidental sampling and the measurement of total phosphate using a spectrophotometer, according to the APHA Method 45001-P standard. The initial characteristics of the sample consisted of liquid phases and solids that were brownish-black and smelly. The phosphate levels in fecal sludge are between 110.42 mg/L and 4572.64 mg/L, with an average value of 1016.77 mg/L. AbstrakKelangkaan fosfat terjadi jika manusia saat ini tidak mengelola fosfat yang tersedia di alam dengan baik. Batuan fosfor adalah sumber fosfat alami, yang ketersediaannya di alam berkurang akibat besarnya permintaan fosfat di dunia, terutama di bidang pertanian. Sehingga diperlukan suatu inovasi baru yang melibatkan recovery fosfat dari lumpur tinja. Lumpur tinja mengandung banyak nutrisi yang terakumulasi dari makanan yang dikonsumsinya. Selain itu, dengan rendahnya sistem pengelolaan air limbah di Indonesia, recovery fosfat dapt dilakukan menggunakan lumpur tinja dari tangki septik yang telah diangkut ke Instalasi Pengolahan Lumpur Tinja (IPLT). Hal ini merupakan salah satu sumber daya yang potensial. Tujuan dari penelitian ini adalah untuk mengukur potensi (keberadaan) fosfat dalam air limbah domestik di Kota Surabaya, Indonesia. Penelitian ini dilakukan dengan pengambilan sampel secara accidental sampling dan pengukuran total fosfat menggunakan spektrofotometer, sesuai standar APHA Metode 45001-P. Karakteristik awal sampel terdiri dari fase cair dan padatan yang berwarna hitam kecoklatan dan berbau. Konsentrasi fosfat dalam lumpur tinja berkisar antara 110,42 mg/L dan 4572,64 mg/L, dengan nilai rata-rata sebesar 1016,77 mg/L. ","PeriodicalId":55725,"journal":{"name":"Rona Teknik Pertanian","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44646216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The study of shelf-life of soymilk treated by pasteurization methods by using organoleptic test","authors":"B. Hariono, S. Kautsar, A. Brilliantina, M. F. Kurnianto, R. Wijaya","doi":"10.17969/rtp.v16i1.29445","DOIUrl":"https://doi.org/10.17969/rtp.v16i1.29445","url":null,"abstract":"AbstractSoymilk is generally processed by a pasteurization process. Pasteurization itself is a method that is widely known in the processing industry as a method to kill microorganisms using high temperatures or commonly referred to as thermal methods that result in damage to physical and chemical components. Therefore, a non-thermal pasteurization process such as high pulsed electric field (HPEF) is needed to maintain product quality attributes. The purpose of this study is to determine the shelf life of soymilk treated by using organoleptic test. About 20 panellists evaluated the quality of soymilk based on color and flavour. Results showed that the HPEF treatment did not change the color and aroma of soybean juice products for 11 hours. It can extend the shelf life of soybean juice for 1 hour compared to the thermal pasteurization process.AbstrakSusu kedelai pada umumnya diolah dengan proses pasteurisasi. Pasteurisasi sendiri merupakan sebuah metode yang banyak dikenal dalam industri pengolahan sebagai metode untuk membunuh mikroorganisme menggunakan suhu tinggi atau biasa disebut dengan metode termal yang  mengakibatkan kerusakan komponen fisik serta kimiawi. Oleh karena itu, dibutuhkan proses pasteurisasi non-termal seperti high pulsed electric field (HPEF) yang dapat menjaga atribut mutu produk. Adapun tujuan dari penelitian ini adalah mengkaji umur simpan susu kedelai yang diberi perlakuan metode pasteurisasi dengan uji organoleptik. Sebanyak 20 orang panelis memberikan penilaian terhadap sampel susu secara deskriptif berdasarkan kriteria warna dan aroma. Hasil penelitian menunjukkan bahwa perlakuan HPEF tidak merubah warna dan aroma dari susu kedelai sampai 11 jam. Hal ini menunjukkan bahwa metode HPEF dapat memperpanjang umur simpan susu kedelai selama 1 jam dibandingan metode pasteurisasi termal. ","PeriodicalId":55725,"journal":{"name":"Rona Teknik Pertanian","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49277176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Soil Conservation Instructions Against Environmental Damage Due to Erosion Rates in the Krueng Seulimeum Sub-watershed","authors":"Siswanda Siswanda, H. Helmi, M. Faisal","doi":"10.17969/rtp.v16i1.24296","DOIUrl":"https://doi.org/10.17969/rtp.v16i1.24296","url":null,"abstract":"AbstrakTanah merupakan sumber daya alam yang penting bagi ekosistem karena menyediakan habitat bagi manusia, hewan, dan tumbuhan. Erosi tanah sangat dipengaruhi oleh kondisi geologi suatu wilayah, seperti kemiringan dan panjang tanah, jenis batuan dan sedimen, permeabilitas tanah, vegetasi, iklim, dan aktivitas makhluk hidup. Penelitian ini bertujuan untuk mengetahui besarnya erosi dan menganalisis tingkat bahaya erosi yang terjadi pada Daerah Aliran Sungai (DAS) Krueng Seulimeum dan Krueng Aceh, serta mengevaluasi dampak kerusakannya terhadap lingkungan. Penelitian dilakukan menggunakan metode survei dengan cara observasi langsung terhadap lokasi penelitian dan melakukan analisis tanah. Nilai erosi dihitung menggunakan persamaan USLE (Universal Soil Loss Equation). Pengaruh faktor panjang dan kemiringan lereng, program pengelolaan dan metode tindakan konservasinya dianalisa. Tahapan penelitian meliputi: (1) pengumpulan data sekunder dan peta lokasi, (2) peninjauan lokasi penelitian dan (3) analisis tanah dan evaluasi data. Berdasarkan hasil jenis tanah,  kemiringan, dan penggunaan lahan menunjukkan bahwa dilokasi penelitian terdapat sembilan Satuan Peta Lahan (SPL) dengan total luas areal 26.497,07 ha. Erosi potensial terbesar terdapat pada SPL 9 yaitu 2.857,72 ton ha-1 th-1. Sedangkan erosi aktual terbesar terdapat pada SPL 8 yaitu 254,06 ton ha-1 th-1 . Terdapat tiga tingkat bahaya erosi yaitu rendah, sedang dan sangat tinggi. Tingkat bahaya erosi rendah pada SPL 1, 2, 4, 5, 6, 7, 8 dan 9 ; tingkat bahaya erosi sedang pada SPL 1, 2, 3 dan 6. SPL 2 menunjukkan tingkat  indeks bahaya erosi yang sangat tinggi. Arahan konservasi tanah yang disarankan adalah reboisasi terhadap kawasan lindung pada SPL 4 dan 8. Metode konservasi dapat diterapkan pada lahan pertanian SPL 1,2,3,5,6,7, dan 9.AbstractSoil is an important natural resource for ecosystems because it provides habitat for humans, animals, and plants. Soil erosion is strongly influenced by a region's geological conditions, such as the slope and length of the land, the type of rock and sediment, the permeability of the land, vegetation, climate, and the activities of living things. The aims of this research were to assess the degree of erosion risk in the Krueng Seulimuem Sub-watershed and the Krueng Aceh Watershed, as well as the environmental consequences of the damage. Direct observations at the research site and soil sample analysis were used to conduct the investigation. The erosion was estimated using the USLE (Universal Soil Loss Equation). The effects of slope length and steepness factors, program management aspects, and conservation methods, as well as a variety of other research criteria, were assessed. It was carried out in three stages: (1) secondary data processing and map preparation; (2) analysis of the research site; and (3) soil analysis and data evaluation. According to the results of the soil type, slope, and land use overlay map, the research site had nine land mapping unit","PeriodicalId":55725,"journal":{"name":"Rona Teknik Pertanian","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47537336","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pendugaan Kadar Patchouli Alkohol Pada Minyak Nilam Variasi Menggunakan Teknologi Near Infrared Reflectance Spectroscopy Dengan Metode Partial Least Square Regression","authors":"Risqa Mutha Dina, Farah Cikita Safliany, Aldian Nur, Hagi Al-Annari, Dwipa Aby Ananta, Zulfahrizal Zulfahrizal","doi":"10.17969/rtp.v16i1.29108","DOIUrl":"https://doi.org/10.17969/rtp.v16i1.29108","url":null,"abstract":"Abstrak. Minyak nilam merupakah salah satu minyak atsiri yang menyumbangkan devisa bagi negara. Komponen utama dalam minyak adalah Patchouli Alkohol (PA). Salah satu parameter yang menentukan kualitas minyak nilam adalah kadar PA. Semakin tinggi kadar PA maka  kualitasnya semakin baik dan harganya semakin tinggi. Tujuan dari penelitian ini adalah memprediksi kadar PA minyak nilam Aceh hasil fraksinasi dengan cepat dan tepat menggunakan teknologi NIRS dengan metode partial least square regression (PLSR) menggunakan pretreatment Mean Normalization (MN). Hasil penelitian menunjukkan bahwa PLSR mampu memprediksi kadar patchouli alkohol dengan menghasilkan model yang tergolong good prediction accuracy. Prediksi model akurasi terbaik dari perlakuan pretreatment MN dengan hasil dengan latent variable 5, nilai residual predictive deviation (RPD) sebesar 2,71, nilai koefisien determinasi (R2) sebesar 0,85, nilai koefisien korelasi (r) sebesar 0,92, nilai root mean square error calibration (RMSEC) sebesar 4,28.Estimation of Patchouli Alcohol Content in Variation of Patchouli Oil Using Near Infrared Reflectance Spectroscopy Technology with Partial Least Square Regression MethodAbstract. Patchouli oil is one type of essential oils that protects foreign exchange for the country. The main component in the oil is Patchouli Alcohol (PA). One of the parameters that determine the quality of patchouli oil is the PA content. The higher the PA content, the better the quality and the higher the price. The purpose of this study was to predict the PA content of fractionated Aceh patchouli oil quickly and precisely using NIRS technology with the partial least square regression (PLSR) method using Mean Normalization (MN) pretreatment. The results showed that PLSR was able to predict patchouli alcohol levels by producing a model that was classified as having good predictive accuracy. The best accuracy prediction model of the MN pretreatment handling with results with a latent variable of 5, the residual predictive deviation (RPD) value about 2,71, the coefficient of determination (R2) is 0,85, correlation coefficient (r) 0,92, and the value root mean square error calibration (RMSEC) of 4,28. ","PeriodicalId":55725,"journal":{"name":"Rona Teknik Pertanian","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45878481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analisa Efektifitas Pemecah Kemiri Di Kabupaten Solok Sumatera Barat","authors":"Renny Eka Putri, Rise Prana Sari, Ashadi Hasan","doi":"10.17969/rtp.v15i2.26060","DOIUrl":"https://doi.org/10.17969/rtp.v15i2.26060","url":null,"abstract":"Abstrak. Kemiri adalah tanaman perkebunan yang sangat banyak manfaatnya bagi masyarakat. Daging biji merupakan bagian yang paling banyak manfaatnya. Proses pemecahan kemiri dilakukan secara manual dan dengan menggunakan alat atau mesin. Adapun tujuan penelitian adalah untuk melakukan analisis efektifitas kemiri di kabupaten Solok di Sumatera Barat.  Penelitian dilakukan dengan dua perlakukan yaitu dengan melakukan pembekuan bahan dan menyiram setelah dijemur dan menggunakan metoda pada umumnya. Parameter yang dievaluasi pada penelitian adalah sifat fisik kemiri, kapasitas kerja efektif, rendemen pemecahan, pengukuran kadar air, persentase kerusakan hasil, kecepatan putar alat, tingkat kebisingan alat.  Kemampuan dari alat pemecah kemiri dengan bahan baku dibekukan sebesar 924,35 kg/jam, dengan rendemen sebesar didapat 35%. Persentase Hasil utuh yang paling baik yaitu pada kemiri dengan perlakuan pembekuan dalam freezer sebesar 83%. Hal ini dapat dijadikan acuan oleh petani kemiri dalam mengolah kemiri sebelum dipecah untuk mendapatkan hasil yang maksimal.Analysis of the Effectiveness of Candlenut Crackers in Solok Regency, West Sumatra Abstract. Candlenut is a plantation crop that has many benefits for the community. The flesh of the seed is the most beneficial part. The process of splitting hazelnut is done manually and by using a tool or machine. The research objective is to analyze the effectiveness of candlenut in Solok district, West Sumatra. The research was carried out with two treatments, namely by freezing the material and watering it after drying it and using the general method. Parameters observed in this study were the physical properties of candlenut, adequate working capacity, yield of solution, measurement of moisture content, percentage of yield damage, tool rotation speed, tool noise level. The work capacity obtained in hazelnut which was subjected to freezing treatment was 924.35 kg/hour. The highest yield was obtained from frozen hazelnut by 35%. The best percentage of intact yield was candlenut with freezing treatment in the freezer of 83%.","PeriodicalId":55725,"journal":{"name":"Rona Teknik Pertanian","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49588624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluasi Kesesuaian Lahan Untuk Tanaman Padi (Oryza sativa L.) di Kabupaten Aceh Singkil, Indonesia","authors":"M. Yasar, S. Syahrul, Zulfa Fijannah, Nor Diana Mohd Idris, Jurry Foo","doi":"10.17969/rtp.v15i2.28688","DOIUrl":"https://doi.org/10.17969/rtp.v15i2.28688","url":null,"abstract":"Kesesuaian lahan adalah tingkat kesesuaian sebidang lahan untuk penggunaan tertentu, dalam hal ini untuk tanaman padi yang menjadi kebutuhan pokok masyarakat. Produksi padi yang optimal harus didukung oleh sumber daya lahan yang sesuai. Penelitian ini bertujuan untuk mengevaluasi tingkat kesesuaian lahan tanaman padi secara actual agar dapat diadakan perbaikan sesuai kesesuaian lahan potensial. Penelitian dilakukan di Kabupaten Aceh Singkil dengan pengambilan sample tanah meliputi 5 (lima) kecamatan dengan luas lahan sawah baku terluas yakni: Danau Paris, Simpang Kanan, Suro Makmur, Kuta Baharu, dan Gunung Meriah. Pengujian sample tanah dilakukan di laboratorium dan data yang diperoleh dianalisis dengan metode Matching dengan membandingkan karakteristik lahan pada Satuan Penggunaan Lahan (SPL). Selanjutnya hasil kajian divisualisasikan dengan mengaplikasikan Sistem Informasi Geografis (GIS). Hasil penelitian menunjukkan bahwa lahan actual berada pada Kelas Sesuai Marginal/S3 sedangkan lahan potensial berada pada Kelas Cukup Sesuai/S2. Kecamatan Gunung Meriah memiliki kelas kesesuaian lahan aktual S3 dan pembatasnya nr (retensi hara), na (hara tersedia), eh (bahaya erosi) dan kelas kesesuaian lahan potensial S3 dan pembatasnya eh (lereng). Kecamatan Simpang Kanan memiliki kelas kesesuaian lahan aktual S3 dan pembatasnya nr (retensi hara), na (hara tersedia), fh (bahaya banjir/genangan) dan kelas kesesuaian lahan potensial S2 dan pembatasnya rc (media perakaran), nr (retensi hara), na (hara tersedia), fh (bahaya banjir/genangan). Kecamatan Suro Makmur memiliki kelas kesesuaian lahan aktual S3 dan pembatasnya nr (retensi hara), na (hara tersedia) dan kelas kesesuaian lahan potensial S2 dan pembatasnya nr (retensi hara), na (hara tersedia). Kecamatan Danau Paris memiliki kelas kesesuaian lahan aktual S3 dan pembatasnya nr (retensi hara), na (hara tersedia) dan kelas kesesuaian lahan potensial  S2 dan pembatasnya rc (media perakaran), nr (retensi hara), na (hara tersedia). Kecamatan Kuta Baharu kelas kesesuaian lahan aktual S3 dan pembatasnya na (hara tersedia), fh (bahaya banjir/genangan)  dan kelas kesesuaian lahan potensial S2 dan pembatasnya na (hara tersedia), fh (bahaya banjir/genangan).","PeriodicalId":55725,"journal":{"name":"Rona Teknik Pertanian","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48818990","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Peningkatan Serapan Hara Nitrogen, Fosfor, dan Kalium Tanaman Sawi Hijau Akibat Konsentrasi Larutan Hara AB Mix pada Media Cocopeat","authors":"Khairul Fahmi, Yusnizar Yusnizar, Sufardi Sufardi","doi":"10.17969/rtp.v15i2.25892","DOIUrl":"https://doi.org/10.17969/rtp.v15i2.25892","url":null,"abstract":"Abstrak. Larutan Hara AB Mix  merupakan  pupuk  majemuk campuran larut air yang sering digunakan pada sistem media hidroponik. Efektifitas Larutan AB Mix ini sebagai sumber hara bagi tanaman sayur antara lain dipengaruhi oleh konsentrasi pemberian yang tepat. Percobaan ini dilakukan di dalam polybag menggunakan rancangan acak lengkap (RAL) yang terdiri atas 5 perlakuan konsentrasi larutan AB Mix yaitu: 0,25; 0,50; 0,75; 1,00; dan 1,25 g L-1 air dengan empat ulangan. Benih sawi hijau dibibitkan pada media rockwool selama seminggu dan setelah berumur 20 hari dipindahkan ke dalam polybag ukuran 15×21 cm yang telah diisi dengan media cocopeat. Pemberian larutan AB Mix dilakukan setiap hari bersamaan dengan penyiraman sampai tanaman berumur berumur 30 hari setelah tanam (HST). Sampel daun untuk analisis N,P, dan K diambil pada seluruh daun tanaman yang telah dipanen pada umur 30 HST. Daun tersebut sebelum dianalisis, dibersihkan dengan akuades dan kemudian dimasukkan ke dalam oven pada suhu 70 0C. Setelah kering digiling dan dihaluskan dengan mesin grinder dan kemudian disaring dengan ayakan ukuran 0,5 mm. Analisis kandungan hara N, P, dan K dilakukan menggunakan metode destruksi basah. Pemberian larutan AB Mix berpengaruh nyata (P0,05) terhadap bobot segar dan bobot kering tanaman sawi hijau serta dapat meningkatkan konsentrasi dan serapan N,P, dan K. Konsenrasi optimum larutan AB Mix diperoleh pada rentang 1.34 - 1.63 g L-1 air.Increased Uptake of Nutrients N, P, and K of Green Mustard Due to The Concentration of Nutrient Solution AB Mix in Cocopeat MediaAbstract. AB Mix Nutrient Solution is a water-soluble compound fertilizer that is often used in hydroponic media systems. The effectiveness of the AB Mix solution as a source of nutrients for vegetable plants is influenced by, among other things, the right concentration of administration. This experiment was carried out in polybags using a completely randomized design (CRD) consisting of 5 treatment concentrations of AB Mix solution, namely: 0.25; 0.50; 0.75; 1.00; and 1.25 g L-1 water with four replications. Green mustard seeds were seeded on Rockwool media for a week and after 20 days they were transferred to 15×21 cm polybags filled with cocopeat media. The AB Mix solution was given every day along with watering until the plants were 30 days old after planting (DAT). Leaf samples for analysis of N, P, and K were taken on all leaves of plants that had been harvested at the age of 30 DAP. Before being analyzed, the leaves were cleaned with distilled water and then placed in an oven at a temperature of 70 0C. After drying, it was ground and mashed with a grinder machine and then filtered through a 0.5 mm sieve. Analysis of the nutrient content of N, P, and K was carried out using the wet digestion method (Kalra 1998). The administration of AB Mix solution had a significant effect (P0.05) on the fresh weight and dry weight of mustard greens and could increase the concentration and uptake of N, P, and","PeriodicalId":55725,"journal":{"name":"Rona Teknik Pertanian","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42931634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Phenology Analysis of Palm Oil (Elaeis Guineensis Jacq) Growth Using Satellite Imagery Approach (A Case Study in Darul Makmur Sub-District, Nagan Raya Regency, Aceh)","authors":"Ijal Wandi, S. Sugianto, S. Syakur","doi":"10.17969/rtp.v15i2.24210","DOIUrl":"https://doi.org/10.17969/rtp.v15i2.24210","url":null,"abstract":"Abstract. Vegetation index values derived from the  Landsat-8 OLI images have been used widely to assess plant growth, especially in oil palm plantations. This study intends to estimate growth rates and establish the phenology of oil palm growth based on spectral reflection patterns. This study employed multitemporal Landsat-8 OLI images from 2013, 2014, 2017, 2020, and 2021 to visually interpret satellite imagery based on spatial and digital detection of object attributes. The phenology of oil palm growth is grouped into the Seed-0 Phase (0-1 Years), Seed Phase (1-3 Years), Young Phase (4-8 years), Teenage Phase (9-14 years), Mature Phase (15-20 years) and Old Phase ( 20 years). The results of the digital analysis of Landsat 8 OLI show that the spectral reflection pattern has almost the same shape at the same wavelength and varies in each phase of oil palm growth. The average NDVI vegetation index value shows a green peak in the teenage phase (0.908). The results of a simple linear regression averaging the NDVI vegetation index value with the average age data of each oil palm growth phase from the TBM-0 phase (0-1 year) to the old phase ( 20 years) yields a moderate relationship for the transformation of the vegetation index NDVI. The transformation of the NDVI vegetation index produces an R² with a value of 0.483 that the regression results formed above the adolescent phase (9-13 years) do not form a pattern","PeriodicalId":55725,"journal":{"name":"Rona Teknik Pertanian","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48702981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Perbandingan Efektivitas Bacillus thuringiensis dengan Teknologi Ozon dalam pengendalian hama Spodoptera litura pada daun cabai (Capsicum annum)","authors":"Sutriono Sutriono, Intan Zahar","doi":"10.17969/rtp.v15i2.28350","DOIUrl":"https://doi.org/10.17969/rtp.v15i2.28350","url":null,"abstract":"Abstrak. Hama ulat grayak (S. litura) merupakan salah satu hama yang menyebabkan daun berlubang tidak beraturan, sehingga mengganggu proses fotosintesis sehingga mengurangi produksi tanaman cabai sehingga perlu dilakukan penanganan hama. Tujuan dari penelitian untuk melihat perbandingan efektivitas B. thuringiensis dengan teknologi ozon yang dibangkitkan melalui reaktor Dielectric Barier Discharge Plasma dalam mengendalikan S. litura pada daun cabai di laboratorium.Metode penelitian terdiri dari beberapa tahapan yaitu (1) Pemeliharaan larva S. litura (2) Perlakuan dan Pengujian Ozon terhadap S. litura (3) Pengujian Toksisitas Isolat Bt terhadap S. litura. Parameter penelitian ini tentang mortalitas (%), dan perubahan persentase populasi (%). Perlakuan pemberian Bacillus thuringiensis sangat efektif dalam mengendalikan Spodoptera litura, hal ini terlihat pada 1 hari setelah aplikasi (HSA) sudah tampak hama ulat yang mortalitas (kematian), sedangkan perlakuan ozon mortalitas S. litura baru tampak pada 3 hari setelah aplikasi (HSA).  Hasil penurunan jumlah hama S. litura pada aplikasi bakteri B. thuringiensis lebih cepat di hari ke 4 hari setelah aplikasi (HSA) yaitu 0 persentase ulat yang hidup, sedangkan perlakuan ozon sampai hari ke 10 HSA masih tersisa 20 % hama S. litura.Comparison of the Effectiveness of Bacillus thuringiensis with Ozone Technology in Spodoptera litura pest control in chili leaf (Capsicum annum)Abstract. The armyworm pest (S. litura) is one of the pests that causes irregular perforated leaves, thus disrupting the photosynthesis process thereby reducing the production of chili plants so that pest management is necessary. The purpose of this study was to compare the effectiveness of B. thuringiensis with ozone technology generated through the Dielectric Barrier Discharge Plasma reactor in controlling S. litura on chili leaves in the laboratory. \u0000The research method consisted of several stages, namely (1) Maintenance of S. litura larvae (2) Ozone treatment and testing of S. litura (3) Toxicity testing of Bt isolates against S. litura.The results of this study will reveal about mortality (%),and change in population percentage (%). The treatment with Bacillus thuringiensis was very effective in controlling Spodoptera litura, it was seen 1 day after application (HSA) the caterpillar pests showed mortality (death), while the ozone treatment of mortality of S. litura only appeared 3 days after application (HSA). The results of the decrease in the number of \u0000S. litura pests on the application of B. thuringiensis bacteria were faster on the 4th day after application (HSA), namely 0 percentage of live caterpillars, while the ozone treatment until the 10th day of DSA still remained 20% of S. litura pests.","PeriodicalId":55725,"journal":{"name":"Rona Teknik Pertanian","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46641931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pond Productivity and Water Quality in Various Vaname Shrimp (Litopenaeus vannamei) Farming Systems at BPBAP Ujong Batee Aceh Besar","authors":"M. Muhammad, M. Muyassir, M. Muhammadar","doi":"10.17969/rtp.v15i2.27566","DOIUrl":"https://doi.org/10.17969/rtp.v15i2.27566","url":null,"abstract":"Abstract. Traditional shrimp farming systems are generally susceptible to disease outbreaks, resulting in low productivity. However, the application of farming technology can reduce these risks. This study aims to calculate the production and examine pond water quality in vannamei shrimp culture by applying semi-intensive, intensive, and super-intensive farming systems through direct measurements and field observations. The results showed that the highest productivity was produced in super-intensive ponds at 5.4 kg/m2, in intensive systems at 2,325 kg/m2, and in semi-intensive farming systems at 0.575 kg/m2. The semi-intensive salinity ranged from 30.8 ppt to 35.1 ppt, the super-intensive salinity ranged from 29.2 to 31.9 ppt, and the semi-intensive salinity ranged from 30.9 to 34.2 ppt. The temperature ranges from 26.7 to 28.5°C for semi-intensive culture, 25.9 to 28°C for super-intensive farming, and 27.8 to 29.3°C for semi-intensive farming. The pH in the semi-intensive farming system is 7.9-8.3, the super-intensive pH is 7.7-8.6, and the semi-intensive system is at pH 7.7-8.2. Dissolved oxygen levels range from 4.0 to 5.9 ppm in intensive shrimp farming, 3.0 to 3.6 ppm in super-intensive shrimp farming, and 3.2 to 4.0 ppm in semi-intensive shrimp farming. Therefore, it can be concluded that the higher the farming technology applied, the higher the ponds' productivity. Meanwhile, differences in farming systems do not impact changes in water quality.Abstrak. Budidaya udang sistem tradisional mudah terjadi penyebaran penyakit dan produksinya rendah. Penerapan teknologi budidaya dapat mengurangi resiko. Penelitian ini bertujuan untuk mengukur produksi dan menganalisa kualitas air tambak pada budidaya udang vaname dengan menerapkan metode budidaya semi intensif, intensif dan super intensif melalui pengukuran secara langsung dan observasi di lapangan. Hasil penelitian menunjukkan produktivitas tertinggi dihasilkan pada kolam super intensif sebesar 5,4 kg/m2, pada metode intensif  2,325 kg/m2 dan pada metode budidaya semi intensif 0,575 kg/m2. Parameter kualitas air pada semi intensif salinitas berada pada level 30,8 ppt - 35,1‰, super intensif salinitas 29,2-31,9‰ dan pada semi intensif salinitas 30,9-34,2‰. Suhu pada metode budidaya semi intensif berada pada level 26,7-28,5°C.  pada  super intensif 25,9-28°C dan  pada metode semi intensif 27,8-29,3°C. pH pada metode budidaya semi intensif berada pada level 7,9-8,3 super intensif pH 7,7-8,6 dan metode semi intensif pH 7,7-8,2. Oksigen terlarut pada metode budidaya udang intensif 4.0-5,9 ppm, pada super intensif oksigen terlarut 3.0-3,6 ppm dan semi intensif 3,2-4,0 ppm. Dapat disimpulkan semakin tinggi teknologi budidaya yang diterapkan akan berdampak pada semakin tingginya produktivitas tambak yang dihasilkan. Perbedaan metode budidaya tidak berdampak pada perubahan kualitas air atau ketiga metode budidaya tersebut berdampak yang sama terhadap kualitas air.","PeriodicalId":55725,"journal":{"name":"Rona Teknik Pertanian","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43280334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}