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All Journal Jurnal Ilmu Pertanian Indonesia Jurnal Hortikultura Indonesia (JHI) Jurnal Ilmu Tanah dan Lingkungan (Journal of Soil Science and Environment) Journal of Tropical Soils Agrifor : Jurnal Ilmu Pertanian dan Kehutanan Jurnal Hortikultura JTSL (Jurnal Tanah dan Sumberdaya Lahan) Jurnal Kimia Riset Jurnal Penelitian Sains Jurnal Penelitian Kelapa Sawit Agroekoteknologi Tropika Lembab Jurnal Ilmiah Biologi Eksperimen dan Keanekaragaman Hayati (J-BEKH) BioEksakta : Jurnal Ilmiah Biologi Unsoed Business Review and Case Studies Jurnal Abdimas Kartika Wijayakusuma COMSERVA: Jurnal Penelitian dan Pengabdian Masyarakat Jurnal Sains Terapan : Wahana Informasi dan Alih Teknologi Pertanian Prosiding Seminar Nasional Biologi

Fahrizal Hazra

Departemen Ilmu Tanah Dan Sumberdaya Lahan, Fakultas Pertanian, Institut Pertanian Bogor, Jl. Meranti Kampus IPB Dramaga, Bogor 16680

Author-ID : 2549016

Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Mathematics Physics Social Sciences Veterinary Other

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Verifikasi Metode Penentuan Residu Pestisida Beta Siflutrin dalam Kentang (Solanum tuberosum L) secara Kromatografi Gas (Verification of Method for Determination of Residual Pesticides Beta Siflutrin in Potato (Solanum tuberosum L) with Gas Chromatography) Fahrizal Hazra; Lisa Rosdiana
Jurnal Sains Terapan : Wahana Informasi dan Alih Teknologi Pertanian Vol. 3 No. 1 (2013): Jurnal Sains Terapan, Volume 3, Nomor 1, Tahun 2013
Publisher : IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jstsv.3.1.50-55

The determination of residual pesticides beta siflutrin in potato (Solanum tuberosum L) was conducted by Gas Chromatography (GC). The separation was conducted on a DB-1 (30m×0.25mm×0.25µm) coloum, using a nitrogen gas as mobile phase at flow rate of 25 mL/min. The determination of beta siflutrin in potato with GC was based on the verification method. The detection was ECD detector. Verification parameters tested were linearity, accuracy, precision, limit of detection (LOD), and limit of quantitation (LOQ). Linearity had a correlation coefficient (r) of 0.9992. Accuracy had a recovery value of 99.49%. Precision had a value of relative standard deviation (% RSD) of 2.48%. The limit of detection (LOD) and limit of quantitation (LOQ) obtained was 0.001305 and 0.00435 mg/kg. The result of this research showed that the method of determination of residual pesticides beta siflutrin in potato with GC can be used as a routine analysis.Key words: verification, beta siflutrin, GC, potato

Verifikasi Metode Uji Arsen dalam Contoh Mainan Anak dengan Spektrofotometer Serapan Atom Generator Uap Hidrida (Method Verification of Assay Arsenic in Toy Sample with Absorption Atomic Spectrophotometer Hydrid Vapor Generator) Fahrizal Hazra; Susanti Pratiwi Purnama; Suri Mulyani Sari
Jurnal Sains Terapan : Wahana Informasi dan Alih Teknologi Pertanian Vol. 4 No. 2 (2014): Jurnal Sains Terapan, Volume 4, Nomor 2, Tahun 2014
Publisher : IPB University

The safety of toys as one of important factors needs to be considered. It can be seen from the presence of heavy metals such as arsenic (As). The analysis of heavy metal arsenic in children's toys can use the verified SNI ISO 8124-3 : 2010 method. Verification activities are needed to verify that the laboratory is able to perform a test which is using such method, and the result are valid. Parameters used in this verification were linearity, limit of detection (LOD), limit of quantitation (LOQ), precision, and accuracy. Based on the verification result of Assay Arsenic in toys with Atomic Absorption Spectrophotometer Hydrid Vapor Generator (HVG), good liearity had a correlation coefficient (r) of 0.9993. The limit of detectin (LOD) and limit of quantitation (LOQ) obtained was 0.0113 mg/Kg and of 3.39%. The accuracy had a recovery value 97.66%. The experimental results showed that the Assay Arsenic in toys with Atomic Absorption Spectrophotometer Hydrid Vapor Generator (HVG) can be used as routine analysis.Keywords : arsenic, atomic absorption spectrophotometer, hydrid vapor generator, verification

Pemurnian Gliserol dari Hasil Samping Produksi Biodiesel Minyak Kelapa Sawit (Purification of Glycerol from the By-Product of Palm Oil Biodiesel Production) Fahrizal Hazra; Irfan Septiawan
Jurnal Sains Terapan : Wahana Informasi dan Alih Teknologi Pertanian Vol. 4 No. 1 (2014): Jurnal Sains Terapan, Volume 4, Nomor 1, Tahun 2014
Publisher : IPB University

The process of making biodiesel made of palm oil produced as a by-product of glycerol with low purity levels, liquids, viscous blackish brown with a very alkaline pH (pH >10). Glycerol is often referred to as crude glycerol. The process of refining glycerol that is by adding phosphoric acid concentration range. The average value of the levels of glycerol from glycerol purification results on the phosphoric acid concentration of 2.5%, 5% and 7.5% (v/v) i.e. 81.2205%, 83.4609% and 80.7595%. Determination of the levels of glycerol results showed samples of glycerol rough after the addition of phosphoric acid with different concentrations of already existing standards. The result analysis of glycerol after purification by the addition of phosphoric acid at concentrations of 5% is most suitable for the process of improving the purity of glycerol.Keywords: crude glycerol, purification, phosphate acid, glycerol content

Commercialization of Hydrogel Fertilizer Slow Release Based on Organic Waste, Microbes, and Mycorrhizal for Floriculture Rio Kevin Marcello Alwi; Muhammad Samsul Maarif; Eric Verchius; Intan Delia Rustandi; Mentari May Syachanna; Fahrizal Hazra
Business Review and Case Studies Vol. 3 No. 1 (2022): BRCS, Vol 3 No 1, April 2022
Publisher : School of Business, IPB University (SB-IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17358/brcs.3.1.63

Floriculture production and productivity are increasing approximately 27% per year. However, its productivity still faces problems such as unfulfilled nutrients, which overcame by fertilization. Organic fertilizers from banana weevils, tofu pulp, palm liquid waste, and rice water can continuously release macro and micronutrients and increase soil microbes' diversity. Currently, no fertilizer can collect all these benefits, so is present. This activity aims to commercialize Cobio by optimizing the use of organic waste, microbes, and mycorrhizal that compete in the market. The method used is quantitative descriptive as a reference in conducting four stages: the market opportunity projection, the production stage, the marketing and distribution stage, and the evaluation stage. Data obtained after achieving sales targets in July - August 2021 and further September – October 2021 with total products sold reaching 1.263 pcs. In achieving this target, Cobio utilizes social media and marketplaces to communicate with consumers. One of which is WhatsApp Business as a marketing channel with the most significant sales figure of 918 pcs. Cobio's sales distribution has also reached 13 provinces in Indonesia show public interest in this product. Cobio has an R/C value of 1,59, which indicates its future sustainability prospects. Keywords: commercialization, floriculture, hydrogel, mycorrhizal, organic waste

Efektivitas Pupuk Hayati Cair pada Tanaman Padi Sawah (Oryza Sativa) Serta Analisis Usaha Taninya: The Effectiveness of Liquid Bio-Fertilizer on Rice Plants (Oryza sativa) and the Analysis of Farming Business Fahrizal Hazra; Dwi Andreas Santosa
Jurnal Ilmu Tanah dan Lingkungan Vol 24 No 2 (2022): 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.24.2.39-46

Petani di Indonesia mulai memahami pentingnya pupuk hayati dengan standar kualitas dan efektivitas yang dipersyaratkan oleh Kementerian Pertanian RI. Sehingga banyak pupuk hayati yang beredar di pasaran perlu dilakukan penelitian untuk menguji kualitas dan efektivitasnya. Tujuan penelitian ini adalah untuk menguji kualitas dan efektivitas, serta analisis usahatani pupuk hayati cair pada padi sawah (Oriza sativa). Perlakuan disusun dalam 5 taraf pemupukan yaitu: tanpa pemupukan atau kontrol (P0), 1,00 dosis NPK (P1), 1,00 dosis NPK + 1,00 dosis pupuk hayati (P2), 0,75 dosis NPK + 1,00 dosis pupuk hayati (P3), 0,50 dosis NPK + 1,00 dosis pupuk hayati (P4). Percobaan dilakukan dengan 4 ulangan sehingga terdapat 20 satuan percobaan. Setiap satuan percobaan merupakan sebidang tanah dengan luas 25 m2. Hasil penelitian menunjukkan bahwa uji mutu memenuhi kriteria Permentan No. 1 Tahun 2019, serta penerapan pupuk hayati di lapangan secara umum menghasilkan pertumbuhan dan hasil tanaman padi sawah yang sama dengan pembanding, dan lebih baik dari perlakuan kontrol. Perlakuan 0,75 dosis NPK + 1,00 dosis pupuk hayati merupakan perlakuan yang paling efektif dan menguntungkan secara agronomis dengan nilai RAE 100%, dan secara ekonomis dengan nilai R/C 1,83.

ANALISIS KORELASI SIFAT BIOLOGI DAN KIMIA TANAH PADA BERBAGAI TIPE PENGGUNAAN LAHAN DI KABUPATEN BOGOR Indri Hapsari Fitriyani; Fahrizal Hazra; Dewi Rosita
Jurnal Tanah dan Sumberdaya Lahan Vol. 10 No. 1 (2023)
Publisher : Departemen Tanah, Fakultas Pertanian, Universitas Brawijaya

Land use in Bogor Regency has diverse vegetation and different soil characteristics. Soil characteristics have an influence on land management. Improper land management has led to a decrease in microbial populations, biodiversity and a decline in soil quality and fertility. Soil fertility is produced by the interaction of the physical, chemical, and biological properties of the soil. This study aims to determine the correlation of soil biological and chemical properties in several different types of land use in Bogor Regency. Soil sampling was carried out using the purposive random sampling method with five replicates. Soil samples were taken at a depth of 0-20 cm by ±1 kg. The research site includes eight land uses namely bamboo gardens, sengon gardens, lamtorogung gardens, and dragon fruit orchards. The results of the analysis showed that the dragon fruit field had an acid pH with very high organic C and total N levels with the highest fungal population of 2.27 x 105 CFU g-1. Meanwhile, bamboo fields with an acid pH also have a medium organic C content and low total N with the lowest total fungi population of 0.37 x 105 CFU g-1. Azotobacter populations and respiration values had the highest correlation with the total P content of the soil. The correlation value of the total population of fungi was the highest, with a total N levels of 0.427.

VARIABILITAS KARAKTERISTIK BIOLOGI TANAH PADA LAHAN KERING SUBOPTIMAL Fahrizal Hazra; Latief Mahir Rachman
Jurnal Tanah dan Sumberdaya Lahan Vol. 7 No. 1 (2020)
Publisher : Departemen Tanah, Fakultas Pertanian, Universitas Brawijaya

Prominent problems in suboptimal land are often only related to the chemical and physical properties of the soil such as low soil pH, available nutrients and the ability of the soil to supply available water. Assessment of soil biological characteristics is needed to look at soil problems on dry land more comprehensively. The purpose of this study was to conduct a preliminary study of the variability of soil biological characteristics in suboptimal dry land. This study was carried out with a field survey accompanied by soil sampling using a composite method in 24 land locations which are the centers of development of the Department of Agriculture commodity development in five districts in Central Java Province that were randomly selected. In addition to soil organic matter, soil biological characteristic studied was the total number of soil microorganisms. The results of the study on both potato and sweet potato commodity lands showed there were intervals of the number of soil microorganisms, namely 1.83 x 105 - 1.63 x 106 CFU g-1 of soil and 3.90 x 105 - 1.10 x 106 CFU g-1 of soil. While the interval of soil respiration value is 4.80 - 10.97 mg C-CO2 kg-1 of soil day-1 for potato commodity land and 5.31 - 10.80 mg C-CO2 kg-1 of soil day-1 for sweet potato land. There was no strong correlation between the number of soil microorganisms and soil respiration, which was indicated by a correlation value of 0.29. The biological characteristics of the soil varied greatly, and they did not affect the type of commodity or location.

PENILAIAN TERHADAP SIFAT-SIFAT FISIKA DAN KIMIA TANAH SERTA KUALITASNYA PADA LAHAN SAWAH MARJINAL Latief Mahir Rachman; Fahrizal Hazra; Rahma Anisa
Jurnal Tanah dan Sumberdaya Lahan Vol. 7 No. 2 (2020)
Publisher : Departemen Tanah, Fakultas Pertanian, Universitas Brawijaya

Various efforts have been carried out by the Indonesian Government to increase rice production, especially the construction of new paddy fields and paddy intensification through increasing intensity or planting frequency in a year. Overcoming the problems of chemical and physical soil properties that have caused low soil productivity is an effort that can be made to increase rice production. This study was aimed to assess the quality of soil physical and chemical properties of the paddy fields in order to find out the cause of the low productivity of paddy soils. The study was conducted in 24 locations in Banten and West Java Provinces. In general, based on their soil quality indexes, the study found that the soil physical quality of paddy soil is good and better than soil chemical quality. There was no significantly different between soil physical quality of paddy soil in Banten and West Java Provinces. However, the soil chemical quality of paddy soils in West Java Province is significantly better than in Banten Province. There were no limiting factors for soil physical properties, while in some locations, some limiting factors of soil chemicals properties were found. Dominant limiting factors for plant growth were the low available P, organic matter and total organic N contents, low pH, and low exchangeable K, and high level of Fe.

APLIKASI MIKORIZA GRANUL DAN POWDER MENGGUNAKAN TEKNIK COATING PADA JAGUNG MANIS (Zea mays L. Saccharata) DI TANAH LATOSOL DAN REGOSOL Fahrizal Hazra; Fatimah Nur Istiqomah; Hetty Novita Agus
Jurnal Tanah dan Sumberdaya Lahan Vol. 9 No. 2 (2022)
Publisher : Departemen Tanah, Fakultas Pertanian, Universitas Brawijaya

The demand for sweet corn increases over time. To increase sweet corn production, many farmers often use inorganic fertilizers excessively. Excessive use of inorganic fertilizers can have a negative impact on soils. One of the efforts that can be made to increase sweet corn production is the provision of biofertilizers, such as mycorrhizae. This study used a completely randomized design (CRD) with two factors. The first factor was the application of fertilizer with 7 levels of treatment, namely Control; NPK fertilizer + organic fertilizer; NPK fertilizer + organic fertilizer + 2.5 g mycorrhizal granules; NPK fertilizer + organic fertilizer + 5 g mycorrhizal granules; NPK fertilizer + organic fertilizer + 2.5 g mycorrhizal powder; NPK fertilizer + organic fertilizer + 5 g mycorrhizal powder; and NPK fertilizer + organic fertilizer + mycorrhizal powder (coating). The second factor was two different soils used as growing media, namely Regosol and Latosol from Dramaga. This study was carried out in five replications. The parameters observed were plant height, stem diameter, plant biomass, root colonization, soil available P, and total P in plants. The results showed that the application of mycorrhizal powder with coating techniques increased the growth of maize plants, the level of root colonization, the availability of soil phosphorus nutrients, and plant phosphorus uptake by the plants.

Detoksifikasi Aluminium dan Ketersediaan Fosforus dalam Tanah Masam Melalui Aplikasi Bahan Organik Lilik Tri Indriyati; Budi Nugroho; Fahrizal Hazra
Jurnal Ilmu Pertanian Indonesia Vol. 28 No. 1 (2023): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18343/jipi.28.1.10

Organic matter that is usually quite widely available around farmers' land can be one of the solutions in overcoming the problem of soil acidification and nutrient deficiencies in tropical highly weathered soils. However, one of the main problems in utilizing such organic matter on acidic soils is the diversity of its chemical composition, which affects the decomposition of the organic matter. In this study, a mixture of soil with five types of organic matter was incubated, namely cow manure, chicken manure, rice straw, legume plant residue, and their combination, with doses equivalent to 0, 7.5 and 15 tons/ha. Mixtures of soil with organic matter were incubated for 120 days under conditions of field capacity moisture. The aim was to evaluate the amelioration effect of the organic matter on soil acidification (exchangeable-Al and soil pH), available P, and phosphatase activity. The application of organic matter type and dose has a marked effect on decreasing the content of exchangeable Al and increasing soil pH, P-available, and phosphatase activity. Chicken manure application showed the best effect in lowering soil exchangeable-Al and increasing pH, available-P, and phosphatase activity. Keywords: amelioration, manure, phosphatase

Co-Authors Aisamrotul Hasanah Ania Citraresmini Ans Iswandi Apriana, Edwin Arrahman, Naufal Auliana Azzahra, Bella Budi Nugroho Deden Saprudin Dedi Nursyamsi Dedi Nursyamsi Dedi Nursyamsi Nursyamsi Devi Wijayanti Dewi Rosita Dian Emilia Maulidiyah Dimas Syahiddin DWI ANDREAS SANTOSA Enny Widyati Eric Verchius Eris, Deden Dewantara Ester LN Lumbantobing Etty Pratiwi, Etty Fadhilla Br Siregar, Rizky Tri Fadhilla, Ardina Nurul Fatimah Nur Istiqomah Fatimah Nur Istiqomah Firdaus, Ibrahim Dhiaulhaq Fitriyani, Indri Hapsari Grahan Sugeng Aprilian Gusmaini Gusmaini Heni Hariyani Hetty Novita Agus Indri Hapsari Fitriyani Indriyati, Lilik Tri Intan Delia Rustandi Irfan Septiawan Istiqomah, Fatimah Nur Iswandi Anas Kevin Setiawan Latief Mahir Rachman Latief Mahir Rachman Lisa Rosdiana Lisdar Idwan Sudirman Lusiana Adriani Mentari May Syachanna Mohammad Khotib Muhammad Abdul Aziz Muhammad Abdul Aziz Muhammad Farid Muhammad Samsul Maarif Nabila Dianisa Novita Sari Nur Istiqomah, Fatimah Nursyamsi, Dedi Nursyamsi Nurul Fadilla, Ardina Rafid Nanda Saputra RAHAYU WIDYASTUTI Rahma Anisa Rahmadani, Ghina Radhiyya Richard Gunawan Rifqi Puja Novtiar Rio Kevin Marcello Alwi Risa Rosita Rizqi Novanto, Praditya Rosinta Sitepu ROSITA, Risa RR. Ella Evrita Hestiandari Selly Salma Selly Salma Selly Salma Sindy Marieta Putri Sukmadewi, Desak Ketut Tristiana Suri Mulyani Sari Susanti Pratiwi Purnama Syifa, Sayyidatul Alfi Umar, Ali Velicia Desyana Rakhmadina Wilhelmus Terang Arga Sanjaya Windi Windi Yunilda Rosa Yuwan Pratama Baki

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