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Guntoro
Institut Teknologi Sawit Indonesia
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Analisis Kelayakan Usaha Pemanfaatan Bungkil Jagung dalam Pengomposan Pelepah Kelapa Sawit Saragih, Dina Arfianti; Yosephine, Ingrid Ovie; Guntoro, Guntoro; Pradana, Fery
JURNAL AGROPLASMA Vol 9, No 1 (2022): AGROPLASMA VOL 9 NO 1
Publisher : UNIVERSITAS LABUHANBATU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/agroplasma.v9i1.2771

Abstract

Palm oil midrib can also be used as a base for composting. Palm fronds which have been underutilized by the community and are more wasteful are usually only stacked around the tree. One way to use oil palm leaf fronds as a source of plant nutrients is in the form of compost. Palm oil fronds contain high lignin, so the process of composting oil palm fronds takes a long time. The process of decomposition of oil palm fronds naturally takes a long time which is around 3-4 months. This study will analyze the feasibility of utilizing corn meal as a compost material for oil palm fronds, corn meal is used as an energy source for microorganisms to accelerate the decomposition of oil palm fronds.This research was conducted in the greenhouse of the Agricultural Agribusiness College of Agriculture (STIPAP) Medan. When the research was conducted for 3 months, from March to May 2019. Palm oil fronds composting is 50 kilograms with a production cost of Rp 1,121,308 and a total income of Rp 1,200,000. The net profit of making oil palm frond compost is Rp. 78,692. BEB the price of making palm oil compost is Rp. 22,426 while the selling price of compost is Rp. 24,000. The BEP of producing oil palm fronds compost obtained is 47 kilograms while the amount of production of oil palm frond compost making is 50 kilograms so it can be interpreted that BEP production of oil palm frond composting is profitable because the amount of production of BEP production is greater. R / C ratio, which is the ratio of total receipts with total production costs has an R / C value of 1.07, then the R / C value can be greater than 1, it can be interpreted that the R / C value of making compost makes a profit. B / C ratio, which is the ratio of profits to total production costs has a B / C value of 0.07, thus the B / C value is smaller than 1. Then it can be interpreted that the B / C value of making compost does not benefit or is not feasible to run in the production of 50 kilograms. Keywords: palm fronds, compost, corn meal, break event point
PEMBUATAN PAPAN PARTIKEL DENGAN MENGGUNAKAN BAHAN BAKU TANDAN KOSONG KELAPA SAWIT DAN PEREKAT RESIN Lubis, Ahmad Fahmi Alhafiz; Effendi, Zulham; Guntoro, Guntoro
Jurnal Agro Fabrica Vol. 4 No. 1 (2022): Juni 2022
Publisher : Institut Teknologi Sawit Indonesia (ITSI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47199/jaf.v4i1.176

Abstract

Oil palm is a plantation crop that has an important role in Indonesia today. This plant is a plant that produces vegetable oil and its derivative products. The processing of oil palm empty bunches into particle board as a strategy for utilizing solid waste from oil palm processing has been carried out. The test was carried out to determine the hardness, weight and moisture content to produce particle board. The board making was carried out in April - August 2020. The location was at the Laboratory of Soil and Fertilizer at the College of Agricultural Agribusiness and Plantation (STIPAP) and the Laboratory of Industrial Chemistry Polytechnic Medan (PTKI). The results showed that the largest water content of oil palm empty fruit bunches was obtained by 44%, then for the weight of the content obtained 1.131 gr / cm3 with a ratio of 50% oil palm empty bunches fiber and 50% resin adhesive and a hardness test value of 76 kg. . The moisture content can affect the resistance and weight of the particle board so that drying is necessary. Meanwhile, the weight of the contents has an effect on particle density, thereby increasing the hardness of the material.
PENGARUH PEMBERIAN AMPAS TEH TERHADAP PERTUMBUHAN TANAMAN KELAPA SAWIT (Elaeis guineensis Jacq) DI MAIN NURSERY Gunawan, Hari; Isra, Marzuti; Guntoro, Guntoro; Maisarah, Maisarah; Aulia, Mhd. Iqbal
BEST Journal (Biology Education, Sains and Technology) Vol 7, No 2 (2024): September 2024
Publisher : Program Studi Pendidikan Biologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/best.v7i2.9488

Abstract

Indonesia merupakan produsen minyak kelapa sawit terbesar didunia serta industrinya telah menjadi andalan. Ampas teh memiliki kandungan senyawa-senyawa bermanfaat seperti polifenol, tehofilin, flavonoid, tanin, vitamin C dan vitamin E serta sejumlah mineral Zn, Se, Mo, Ge, dan Mg. Kandungan ampas teh yang berupa mineral tersebut merupakan unsur-unsur esensial yang sangat dibutuhkan oleh tanaman. Limbah ampas teh mengandung serat kasar, selulosa dan lignin, berbagai macam mineral seperti karbon organik, Tembaga (Cu) 20%, Magnesium (Mg) 10%, dan Kalsium (Ca) 13%. Kandungan tersebut dapat membantu pertumbuhan tanaman. Penelitian ini dilakukan untuk mengetahui pengaruh pemberian ampas teh terhdap pertumbuhan tanaman kelapa sawit (Elaesgiuneensis jacq) di main nursery. Penelitian ini dilaksanakan di kebun percobaan ITSI Medan. Penelitian ini menggunakan metode Rancangan Acak Kelompok Non Faktorial (RAK Non Faktorial) terdiri dari 4 perlakuan dengan 6 ulangan sehingga total sampel keseluruhan 24 bibit. Parameter yang diamati adalah tinggi bibit, diamter batang, jumlah daun, berat basah akar, berat kering akar, analisa tanah awal dan analisa tanah akhir. Data yang diperoleh dianalisis secara statistik dengan uji DMRT (Duncan’s Multiple Range Test) dan analysis of variance (ANOVA) dengan uji beda nyata 5% dan 1%. Hasil penelitian ini menunjukkan bahwa pemberian aplikasi ampas teh berpengaruh nyata pada pertumbuhan tanaman tinggi tanaman dengan nilai rataan tertinggi di minggu 24 MST, sedangkan pada diameter batang, jumlah daun, berat basah akar dan berat kering akar menunjukkan hasil tidak nyata terhadap bibit kelapa sawit.
Respon Pupuk Organik Cair Lamtoro (Leucaena leucocephala) Daun Kulit Jeruk (Citrus x sinensis) Terhadap Pertumbuhan Bibit Kelapa Sawit (Elaeis guineensis Jacq.) Di Main Nursery Maharany, Rina; Wagino, Wagino; Guntoro, Guntoro; Roosmawati, Febriana; Maulina, Viny
BEST Journal (Biology Education, Sains and Technology) Vol 7, No 1 (2024): Juni 2024
Publisher : Program Studi Pendidikan Biologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/best.v7i1.8968

Abstract

Penelitian dilaksanakan di kebun ITSI Medan. Waktu penelitian dilaksanakan bulan Februari - Agustus 2020. Penelitian ini menggunakan metode Rancangan Acak Kelompok (RAK) Faktorial dengan  perlakuan POC daun lamtoro dan POC kulit jeruk. Jumlah polibag per perlakuan adalah 4. Pengujian parameter disusun pada daftar sidik ragam dan dilakukan uji Duncan Multiple Range Test (DMRT) dengan taraf 5%. Hasil penelitian menunjukkan bahwa pemberian  POC daun lamtoro menunjukkan pengaruh yang nyata pada parameter tinggi tanaman 10 MST - 14 MST  dengan hasil terbaik terdapat pada perlakuan L3 (750 ml) dengan peningkatan tinggi tanaman masing-masing 10 MST (52,08 cm), 12 MST (56,35 cm), 14 MST (63,84 cm). Pemberian POC kulit jeruk menunjukkan pengaruh yang tidak nyata terhadap pertumbuhan vegetatif bibit kelapa sawit pada semua parameter pengamatan. Interaksi antara perlakuan POC daun lamtoro dan POC kulit jeruk menunjukkan pengaruh yang tidak nyata terhadap pertumbuhan vegetatif bibit kelapa sawit pada semua parameter pengamatan
Analysis of The Relationship of Wind Speed and Rainfall on the Development of Coffee Leaf Rust (Hemileia Vastatrix B. & Br.) on Sipirok Arabica Coffee Plants in South Tapanuli District, Indonesia Guntoro, Guntoro; Lisnawita, Lisnawita; Tantawi, A. Rafiqi; Safni, Irda
GMPI Conference Series Vol 3 (2024): The 10th Asian Academic Society International Conference (AASIC)
Publisher : Gemilang Maju Publikasi Ilmiah (GMPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53889/gmpics.v3.424

Abstract

Coffee is one of the agricultural commodities that is a priority for development by the Indonesian government because it has high economic value. Sipirok coffee is a mainstay Arabica coffee from the Highlands, South Tapanuli dictrict, Sumatera Utara - Indonesia. During its cultivation in the field, many problems were discovered, including coffee leaf rust disease caused by the fungus Hemileia vastatrix. This research aims to analysis the relationship between wind speed and rainfall on the development of coffee leaf rust disease (H.vastatrix) on Arabica coffee plants in South Tapanuli Regency, North Sumatere Province. The research was carried out at the community coffee planting center in the Sipirok Highlands, in Sampean Village, Sipirok District, South Tapanuli Regency with coordinates 1.64'N99.26'E with an altitude of 900 meters above sea level. The research was carried out by observing weather elements with a portable weather measuring device, capturing H. vastatrix fungal spores with a modified Kyosawa type spore capture device, and observing the severity of H. vastatrix coffee leaf rust disease. The collected data was analysed using correlation and regression analysis with SPSS Version 25. The results showed that wind speed and rainfall had a very positive effect on conidium capture and disease severity. Accordingly, there is a relationship between the elements of wind speed and rainfall on the development of coffee leaf rust disease (Hemileia broadatrix B. Br.).
Analisis Kadar Bahan Organik Pada Tanah Ultisol di Perkebunan Kelapa Sawit Fase TBM (Tanaman Belum Menghasilkan) dan TM (Tanaman Menghasilkan) Yosephine, Ingrid Ovie; Maisarah, Maisarah; Guntoro, Guntoro; Lubis, Abdul Rahman
JURNAL AGROPLASMA Vol 12, No 2 (2025): Vol 12, No 2 (2025): (JURNAL AGROPLASMA VOLUME 12 NO 2 TAHUN 2025)
Publisher : UNIVERSITAS LABUHANBATU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/agroplasma.v12i2.8156

Abstract

Ultisol soil is soil with soil acidity problems, little organic material and low macro nutrients, so it has a big impact on the productivity of oil palm plants. Organic matter is one of the limiting factors and plays a very important role in nutrient delivery and as a nutrient buffer. This research was carried out at PT. Langkat Nusantara Kepong Kebun Tanjung Beringin Langkat Regency in Division 2 Immature Crops (TBM) and Mature Crops ™. From December 2023 to February 5 2024. This research aims to be able to determine the soil organic matter content in the Immature Plants (TBM) and Mature Plants ™ phases in ultisol soil in the oil palm plantations of PT. Langkat Nusantara Kepong Kebun Tanjung Beringin. This research used quantitative descriptive methods and a completely randomized design. Research Results: The organic C content of Tanjung Beringin gardens is relatively low. The C-organic content in the TBM area has a significant difference compared to the TM area. The N content of Tanjung Beringin garden soil is classified as very low and there is no significant difference between the TBM and TM areas. Keywords: ultisol soil, organic matter, palm oil, TBM, TM 
Co-Authors Adi Prima Saragih Adinda Thalia Adri Moses Manullang Ahmad Dhairobi Ahmad Fahmi Alhafiz Lubis Ahmad Saleh Aulia, Mhd. Iqbal Cici Dalimunthe Dina Arfianti Saragih Eka Bobby Febrianto, Eka Bobby Ferdy Ikhwan Gema Tarigan Habib Handoko Hari Gunawan Hasrudy Tanjung, Hasrudy Hastina Febriaty Ika Ucha Pradifta Rangkuti Ingrid Ovie Ingrid Ovie Yosephine Iqbal Bukhori Irda Safni Irma Christiana Isna Ardila Kurnainy Tohir Lisnawita Lisnawita Lubis, Abdul Rahman Lubis, Ahmad Fahmi Alhafiz Maisarah Makhrani Sari Ginting Mardiana Wahyuni Marshal Arifin Sinaga Marzuti Isra Maulina, Viny Muhammad Firza Alpi, Muhammad Firza Muhammad iqbal Muhammad Yusuf Dibisono Nuraida Nuraida Nurliana Poppy Fitria Pradana, Fery Priyo Adinugroho Radite Tistama Raju Setiawan Damanik Resty Fadhillah Rina Maharany Rini Astuti Rio Ardiansyah Fenni Rio Ardiansyah Fenni Ritna Wahyuni Roosmawati, Febriana Sakiah Sakiah Simon Simanjuntak Sinaga, Anisyah Sri Murti Tarigan Sulthon Parinduri Tantawi, A. Rafiqi Tiffany Zia Aznur Wagino Wandi Marwadi Afandi Widia Lista Nasution Windra Surono Yazid, Abu Yusuf Dibisono, Mhd Zizi Graci Violita Zulham Efendi Zulham Effendi