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All Journal Naturalis : Jurnal Penelitian Pengelolaan Sumberdaya Alam dan Lingkungan Jurnal Ilmu-Ilmu Pertanian Indonesia Jurnal Agrotek Lestari Jurnal Ilmu Pertanian Tirtayasa Jurnal Penelitian Agrosamudra Jurnal Masyarakat Madani Indonesia Eumpang Breuh: Jurnal Pengabdian Masyarakat
Boy Riza Juanda
Dosen Program Studi Agroteknologi, Fakultas Pertanian, Universitas Samudra, Langsa
Religion Agriculture, Biological Sciences & Forestry Humanities Computer Science & IT Earth & Planetary Sciences Education Public Health Social Sciences Other

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Eksplorasi Bakteri Endofit Terhadap Cendawan Pestalotiopsis microspora Penyebab Penyakit Gugur Daun Pada Tanaman Karet (Hevea brasiliensis Muell. Arg.) Vazza Navtra Tylova; Syamsul Bahri; Boy Riza Juanda; Alchemi Putri Juliantika Kusdiana
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 25 No 1 (2023)
Publisher : BPFP Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.25.1.51-58

Abstract

[The Potential of Endophytic Bacteria as a Biological Controller of Leaf Fall Disease Caused by Pestalotiopsis sp. IN Rubber Plants (Hevea brasiliensis Muell. Arg.]. This study aims to explore endophytic bacteria and determine their effectiveness against the fungus Pestalotiopsis sp. which causes leaf fall on rubber plants. Pestalotiopsis sp. can attack all rubber clones resulting in decreased latex production. The presence of pathogen attacks can result in enormous economic losses. Therefore, it is very important to find an effective and efficient controlling method, one of which is through biological control of plant diseases, namely by using antagonistic microorganisms. The presence of endophytic bacteria as biological controllers has become an alternative method to reduce the practices of chemical control. This study used a Non-Factorial Completely Randomized Design (CRD) with 6 treatments and 4 replications, so that 24 experimental units were obtained, using Potato Dextrose Agar (PDA) media for the in vitro antagonist test using the dual culture method. Namely P₀ = Control, P₁ = Pestalotiopsis sp. 1 vs Bacteria P, P₂ = Pestalotiopsis sp. 2 vs Bacteria B, P₃ = Pestalotiopsis sp. 3 vs Bacteria C, P₄ = Pestalotiopsis sp. 4 vs Bacteria E, P₅ = Pestalotiopsis sp. 5 vs Bacteria F. The results indicated that antagonistic treatment of endophytic bacteria in vitro affected the percentage of inhibitory power of the mycelium of the fungus Pestalotiopsis sp. by endophytic bacteria at 1 - 6 Days After Incubation (DAI). The 3% KOH method and gram staining showed that samples P₁, P₂, P₅ did not produce mucus and were purple in colour (positive), but samples P₃, P₄, showed mucus and were pink in colour (negative). Hypersensitivity reactions to tobacco plants samples P₁, P₂, P₃, P₄, P₅ did not show negative characteristics or did not cause changes in coloration and symptoms on leaves of tobacco plant.  
Respon Pertumbuhan Dan Produksi Tanaman Melon (cucumis melo L,) Dengan Pemberian Dosis Pupuk Guano Dan Bioarang Sekam Padi Selly Amelia; Syamsul Bahri; Boy Riza Juanda
Jurnal Agrotek Lestari Vol 12, No 1 (2026): April
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jal.v12i1.14610

Abstract

Tanaman melon merupakan salah satu tanaman buah yang paling populer di Indonesia. Penelitian ini dilakukan untuk mengetahui pengaruh pupuk guano dan biochar sekam padi, serta pengaruh interaksi antara kombinasi perlakuan tersebut terhadap pertumbuhan dan produksi tanaman melon. Penelitian ini dilaksanakan dari bulan Mei hingga Agustus 2025 di Kebun Percobaan Fakultas Pertanian, Universitas Samudra, Kota Langsa, Provinsi Aceh. Penelitian ini menggunakan Rancangan Acak Kelompok Faktorial (RAK) dengan 2 faktor, yaitu pemberian Pupuk Guano (P) yang terdiri dari 4 tingkatan, yaitu P0 = Kontrol / tanpa pupuk guano, P1 = 1,05 kg/petak (10 ton/ha), P2 = 2,01 kg/petak (20 ton/ha), P3 = 3,15 kg/petak (30 ton/ha). Selain itu, diberikan juga Biocharcoal Sekam Padi (B) yang terdiri dari 4 tingkatan, yaitu B0 = Kontrol/tanpa biocharcoal sekam padi, B1 = 0,52 kg/petak (5 ton/ha), B2 = 0,78 kg/petak (7,5 ton/ha), B3 = 1,05 kg/petak (10 ton/ha). Hasil penelitian menunjukkan bahwa dosis pupuk guano mempunyai pengaruh yang sangat signifikan terhadap beberapa parameter pengamatan, dengan hasil terbaik yang diperoleh pada dosis 3,15 kg/petak (30 ton/ha) pupuk guano. Pemberian biocharcoal sekam padi mempunyai pengaruh yang signifikan terhadap beberapa parameter pengamatan dengan hasil terbaik yang diperoleh pada dosis 0,78 kg/petak (7,5 ton/ha).
Pengaruh Aplikasi Palm Oil Mill Effluent (POME) Terhadap Indeks Kualitas Tanah dan Produktivitas Kelapa Sawit (Elaeis guineensis Jacq.) Syahdina Atiyyah Dinata; Iwan Saputra; Boy Riza Juanda
Jurnal Agrotek Lestari Vol 12, No 1 (2026): April
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jal.v12i1.14773

Abstract

Oil palm (Elaeis guineensis Jacq.) is one of Indonesia’s most important plantation commodities, and the application of Palm Oil Mill Effluent (POME) has been increasingly adopted to support sustainable production. This study aimed to evaluate the effect of land application of POME on the Soil Quality Index (SQI), analyze the relationship between soil quality and oil palm productivity, and compare oil palm yields between POME-applied and non-applied areas at PTPN IV Regional II, Langkat Oil Palm Estate, North Sumatra. The research was conducted from March to April 2025 using a survey method with descriptive analysis. Soil samples were collected purposively from two POME pumping blocks (O and W) at depths of 0–30 cm and 60–90 cm, and analyzed for physical and chemical soil properties. The results showed that land application of POME significantly improved the Soil Quality Index, indicated by increased soil pH, organic carbon, total nitrogen, and available phosphorus, as well as decreased bulk density, particularly on undulating land. A positive relationship was observed between soil quality and oil palm productivity, and POME-applied areas consistently produced higher yields than non-applied areas. These findings demonstrate that land application of POME effectively enhances soil quality and increases oil palm productivity.Keywords : Oil palm, Palm Oil Mill Effluent (POME), Land application, Soil quality index, Productivity
Co-Authors Alchemi Putri Juliantika Kusdiana Andi Syahputra Perdana Cut Mulyani Fajar Pratama Farasmayuda Hanisah Husna Maulida Iswahyudi, Iswahyudi Kiagus M Zain Basriwijaya Liza Agnesta Krista M Syahril Muhammad Rian Nugraha Muhammad Zaini Reza Tanjung Risky Ridha Romaito Simatupang Rozalina Rozalina Saputra, Iwan Selly Amelia Siregar, Dolly Sojuangan Siswahyudianto sofiyana sofiyana Supriyadi Syahdina Atiyyah Dinata Syamsul Bahri Syukri Vazza Navtra Tylova