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All Journal Agrifor : Jurnal Ilmu Pertanian dan Kehutanan AL-HAYAT: Journal of Biology and Applied Biology Gorontalo Journal of Forestry Research Jurnal Sylva Scienteae MAKILA: Jurnal Penelitian Kehutanan Journal Of Human And Education (JAHE) JURNAL HUTAN TROPIS CELEBES Agricultural Jurnal Rimba Lestari ABDIKU : Jurnal Pengabdian Masyarakat Universitas Mulawarman Outline Journal of Community Development
Widia Sri Utami
Universitas Mulawarman
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Education Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Social Sciences Other

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POTENCY OF CARBON STORAGE AND CO2 ABSORPTION AT PT TIRTA INVESTAMA, SUBANG DISTRICT Utami, Widia Sri; Juliani, Rany; Abidin, Zaenal; Santoso, Sidik; Rahayu, Apriliyanti Dwi; Ankhoviyya, Nida
Gorontalo Journal of Forestry Research VOLUME 7 NOMOR 1 TAHUN 2024 GORONTALO JOURNAL OF FORESTRY RESEARCH
Publisher : Universitas Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32662/gjfr.v7i1.3352

Abstract

The Biodiversity Park covering an area of ±5,800 Ha provides conservation functions in the work area of PT Tirta Investama Plant Subang and for the surrounding community which has a sloping to very steep topography. A landslide disaster occurred in the company's work area in Block II at the beginning of 2024 due to increased rainfall of 17.6 mm/hour caused by global warming. Biodiversity Park also provides the function of reducing greenhouse gas emissions by storing and absorbing CO2 by plants in the area to reduce global warming through photosynthetic activity assisted by energy from sunlight. The research method is to carry out a census inventory of mahogany plants in Block II. This research aims to determine carbon storage and CO2 uptake in mahogany plants. The research show that 412 mahogany plants can store 26,364 tonnes/ha of carbon in their stems or equivalent to an equivalent CO2 uptake of 96,755 tonnes/ha.
Training on Silage Making for Farm Feed (Dairy Cows) with Forestry Plants Indigofera zollingeriana Widia Sri Utami; Muhammad Rafii Nur Fauzan; Letus Sepsamli; Hengky Sipayung
Outline Journal of Community Development Vol. 2 No. 3: March 2025
Publisher : Outline Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61730/vcpnnq13

Abstract

Farmers often have difficulty obtaining fresh forage feed to improve animal health and productivity. The problem of animal feed is one of the successes of farmers. Erratic seasonal changes cause difficulties in providing forage availability. One way to feed dairy cows is to utilize forestry plants, namely Indigofera zollingeriana, which is resistant to environmental conditions for growth and increase the growth of dairy cows with the practice of making probiotics and silage. Indigofera zollingeriana has better content for dairy cows than grass. The aim is to increase community knowledge and skills in managing animal feed in an independent and sustainable way. The method was to provide socialization and practice then evaluated with a questionnaire with 10 questions. There were 20 participants from one farmer group. The results of this activity are that the community understands very well the material and practice, which is an average of 84.38%. Participants were dominated by men as many as 15 people while the age range that dominated was age> 50 years as many as 11 people. The gender and age of participants affect the success of increasing the growth of dairy cows.
ESTIMASI SERAPAN KARBON PADA KLASIFIKASI PENGGUNAAN LAHAN DENGAN CITRA PLANETSCOPE DAN DATA LITERATURE DESA SUNGAI PAYANG Utami, Widia Sri; Tarigan, Lilis BR; Ariyanto, Ariyanto; Saud, Oshlifin Rucmana; Nurhikmah, Ulfiah
Jurnal Hutan Tropis Vol 13, No 4 (2025): Jurnal Hutan Tropis Volume 13 Nomer 4 Edisi Desember 2025
Publisher : Lambung Mangkurat University-Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jht.v13i4.23923

Abstract

Desa Sungai Payang berada di Kecamatan Loa Kulu, Kabupaten Kutai Kartanegara, yang merupakan salah satu dari dua wilayah yang secara langsung terlibat dalam pembentukan kawasan Ibu Kota Nusantara (IKN) sehingga terdapat perubahan yang menyebabkan penurunan serapan karbon dan peningkatan perubahan iklim. Tujuan penelitian ini untuk mengestimasi serapan karbon pada klasifikasi penggunaan lahan. Pengambilan sampel menggunakan titik ground check berdasarkan citra planetscope dan peta tutupan lahan. Titik ground check dilakukan uji akurasi berupa akurasi keseluruhan, akurasi pengguna, produser akurasi, dan kappa akurasi. Estimasi karbon menggunakan acuan SNI 7724 Tahun 2019 serta estimasi serapan karbon berdasarkan data sekunder. Hasil penelitian bahwa Estimasi cadangan karbon terbesar pada klasifikasi penggunaan lahan yaitu Hutan eucalyptus sebesar 63.2214 ton dan estimasi cadangan karbon terkecil yaitu pada klasifikasi penggunaan lahan penambangan terbuka bukan sirtu, Sungai, dan tubuh air lain. Total estimasi karbon dari seluruh penggunaan lahan sebesar 1.611.156,800 ton dengan toal luas 43.719 hektar.
Inventarisasi Hama dan Penyakit pada Bibit Lima Jenis Tanaman Buah Tropis di Persemaian Mentawir Saud, Oshlifin Rucmana; Syarifudin, Achmad; Nugroho, Andi; Saud, Oshferlia Rucmana; Utami, Widia Sri
MAKILA Vol 19 No 2 (2025): Makila : Jurnal Penelitian Kehutanan
Publisher : Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/makila.v19i2.22687

Abstract

The nursery phase represents a critical early space in plant cultivation, which is highly susceptible to pest and disease incidence. Mentawir Nursery, as one of the largest seedling centers in East Kalimantan, plays a strategic role in supporting reforestation programs, including for Indonesia’s new capital city (IKN). This study aims to identify and document the types of pests and diseases affecting five tropical fruit crops, as well as to analyze the incidence and severity. The five plant species observed in this study are Citrus sinensis, A. integer, Psidium guajava, Mangifera indica, and Dimocarpus longan. The research method employed is Simple Random Sampling, with observations conducted on 20 individuals from each plant species. The collected data include attack levels, symptoms, and signs of pest and disease infestations.The results indicate that four plant species experienced a 100% attack frequency, while one species had an 80% attack rate. The severity of the attacks ranged from moderate to severe. The observed disease symptoms included leaf spots, leaf blight, loss of leaf tissue, internal leaf tissue loss, leaf tumors, and leaf curling. Identified infestation signs included the presence of whiteflies (Hemiptera), larvae (Diptera), small beetles (Coleoptera), as well as larvae and pupae (Lepidoptera).These findings serve as a basis for pest and disease management at Mentawir Nursery to enhance seedling success and plant productivity.
Co-Authors AA Sudharmawan, AA Achmad Syarifudin, Achmad Andi Nugroho, Andi Ankhoviyya, Nida Ariyanto Ariyanto Fitria Dewi Kusuma Hari Siswanto Harmonis Hengky Sipayung Herlambang, Heru Juliani, Rany Kalalinggi, Septaria Yolan Novi Eka Wati Nugroho, Andi Nugroho Nurhikmah, Ulfiah Rafii Nur Fauzan, Muhammad Rafii Rahayu, Apriliyanti Dwi Raihandhany, Reza Ris Hadi Purwanto Rizky, Oda Oktafianus Rizky Rucmana Saud, Oshlifin Sari, Diah Rakhmah Saud, Oshferlia Rucmana Saud, Oshferlia Rucmana Saud Saud, Oshlifin Rucmana Sepsamli, Letus Siahaan, Krisna Bernadeth Sidik Santoso, Sidik Sigit Sunarta Sofyan, Fenny Putri Mariani Sofyan Suhardiman, Ali Syamswisna , Syarifudin, Achmad Syarifudin Tarigan, Lilis BR Widiastuti, Lusia Komala Yosep Ruslim Zaenal Abidin