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All Journal Agrikultura AGROEKOTEKNOLOGI JURNAL ILMU PERTANIAN Jurnal Penelitian Pertanian Terapan Jurnal AGROSAINS dan TEKNOLOGI SAINS TANAH - Journal of Soil Science and Agroclimatology Agrotekma: Jurnal Agroteknologi dan Ilmu Pertanian Jurnal Penelitian Kelapa Sawit Jurnal Agronomi Tanaman Tropika (JUATIKA) Jurnal Agro Estate Journal La Lifesci PERTANIAN TROPIK Jurnal Indonesia Sosial Teknologi Agrotech Journal Agroista: Jurnal Agroteknologi Agroland: Jurnal Ilmu-ilmu Pertanian Biodiversitas Journal of Biological Diversity
Mariani sembiring
Faculty Of Agriculture, Universitas Sumatera Utara. Jl. Prof. A. Sofyan No. 3, Kampus USU Padang Bulan, Medan 20155, North Sumatra, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Environmental Science Immunology & microbiology Law, Crime, Criminology & Criminal Justice Social Sciences

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Peran Bacillus subtilis dan Bahan Organik terhadap Toleransi Tanaman Kedelai (Glycine max L.) pada Tingkat Penyiraman yang Berbeda Muhammad Titan Hafizal; Mariani br Sembiring; Nini Rahmawati
Jurnal Agrosains dan Teknologi Vol 11 No 1 (2026)
Publisher : Fakultas Pertanian - UMJ

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jat.v11i1.32141

Abstract

Budidaya kedelai di lahan marjinal seringkali terhambat oleh kelangkaan air. Salah satu solusi potensial adalah aplikasi Bacillus subtilis, mikroba penghasil ACC deaminase, bersama dengan bahan organik seperti pupuk kandang, dikombinasikan dengan penjadwalan irigasi yang tepat. Penelitian ini bertujuan untuk mengevaluasi pengaruh B. subtilis, bahan organik (pupuk kandang dan biochar), dan interval irigasi terhadap pertumbuhan varietas kedelai Anjasmoro. Percobaan dilakukan di rumah kaca yang terletak di Komplek Citra Wisata, Jl. Karya Wisata, Medan Johor, menggunakan Rancangan Acak Kelompok Lengkap (RCBD) dengan tiga faktor dan tiga ulangan. Faktor pertama adalah aplikasi mikroba (B. subtilis dan tanpa mikroba), faktor kedua adalah bahan organik (tanpa penambahan, pupuk kandang, dan biochar), dan faktor ketiga adalah interval irigasi (setiap 1, 3, dan 5 hari). Hasil penelitian menunjukkan bahwa B. subtilis meningkatkan pertumbuhan vegetatif, aktivitas enzim SOD dan POD, serta kandungan klorofil, tetapi menurunkan hasil biji dan polong. Pupuk kandang meningkatkan pertumbuhan dan hasil panen, sedangkan biochar meningkatkan aktivitas enzim dan panjang akar. Irigasi harian menghasilkan pertumbuhan dan hasil panen terbaik, sedangkan penyiraman setiap lima hari meningkatkan klorofil a dan aktivitas enzim antioksidan
Growth and Yield of Shallot Plants with the Application of Sp-36 Fertilizer and Poc from Red Devil Fish Yedija Manullang; Revandy Damanik; Mariani Sembiring
Journal La Lifesci Vol. 6 No. 5 (2025): Journal La Lifesci
Publisher : Newinera Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Shallots (Allium ascalonicum L.) are one of the horticultural commodities with high economic value and are needed by the community as food. Shallots also contribute to national inflation. Shallots become potential commodity to be developed in the region of North Sumatra, especially in the Toba region. One of the efforts to increase the growth and production of shallot plants can be done by applying SP-36 Fertilizer and Red Devil Fish Liquid Organic Fertilizer. This research aims to determine the best SP-36 and Red Devil Fish Liquid Organic Fertilizer, growth and production of shallots. The research was conducted from September to December 2023 in Lumban Silintong Village, Balige District, Toba Regency, North Sumatra with an altitude of ± 945 m above sea level. The design used was a factorial Randomized Group Design with three replications. The treatments studied were the first factor of SP-36 dose with four levels of treatment (0 (control), 112.5 Kg/Ha, 225 Kg/Ha, 337.5 Kg/Ha and the second factor was the dose of liquid organic fertilizer of red devil fish (0 (control), 3 g/plot, 5 g/plot). The results showed that the provision of SP-36 had a significant effect on the observed variable, namely the fresh weight of plants per plot. Giving Red Devil Fish Liquid Organic Fertilizer can significantly increase plant height, plant fresh weight per plot, plant fresh weight per sample, number of tubers per plot and tuber diameter.
The Role of Mycorrhizal and Humic Acid Biofertilizers in Supporting the Growth of Oil Palm Seedlings (Elaeis guineensis Jacq.) in the Main Nursery Stage on Ultisol Soil Andri Ikhsan; Mariani Sembiring; Lisa Mawarni
JURNAL AGRONOMI TANAMAN TROPIKA (JUATIKA) Vol. 8 No. 2 (2026): Jurnal Agronomi Tanaman Tropika (JUATIKA) Vol. 8 No. 2 Mei 2026
Publisher : LPPM UNIVERSITAS ISLAM KUANTAN SINGINGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36378/juatika.v8i2.5418

Abstract

To overcome the limitations of ultisol soils and the increasing demand for high-quality oil palm seedlings, this study evaluates a combination of humic acid and mycorrhizal biofertilizer applications with reduced NPK fertilization at the main nursery stage to increase nutrient availability and support more efficient and sustainable nursery management on marginal soils. The experiment was conducted in the Agricultural Field of the Faculty of Agriculture, University of North Sumatra using a Non-Factorial Randomized Design, consisting of mycorrhiza + humic acid), F (3/4 standard NPK + mycorrhiza + humic acid), and G (standard NPK + mycorrhiza + humic acid). The results showed that the combined application of mycorrhizal biofertilizer and humic acid significantly improved the growth of oil palm seedlings at the main nursery stage. The best growth performance was observed in treatment E (1/2 standard NPK + mycorrhiza + humic acid), as indicated by increased plant height, number of leaves, stem diameter, and both fresh and dry weights. In addition, treatments E (1/2 standard NPK + mycorrhiza + humic acid) and F (3/4 standard NPK + mycorrhiza + humic acid) improved phosphorus uptake and its efficiency, with values comparable to the standard NPK treatment (B), while also increasing root colonization, with the highest levels observed in these treatments.
Co-Authors Abdul Rauf Abdul Rauf ABDUL RAUF Abdul Rauf Ade Ine Imansari Agustini, Fenny Alfredo Sitorus Alida Lubis Amos Simanungkalit Andi Andi Andri Ikhsan Armando Septian Simbolon Armando Septian Simbolon Aslan Pasaribu Asmarlaili S. Hanafiah asmarlaili sahar hanafiah Beatrix I. L. J. Sinaga BENNY HIDAYAT BENNY HIDAYAT Benny Hidayat Benny Hidayat Bintang Bintang Sitorus Bintang Sitorus Budi Ananda Pratama Budi Ananda Pratama Cynthia Simanjuntak Damanik, Revandy Damanik, Revandy I.M Danu Syahputra Lubis Dea Walucky Saragih Deni Elfiati Deni Elfiati deyu zahraini putri Dwi Ningsih Susilowati Edi Sigit Sutarta Edi Sigit Sutarta Eko Andreas Sihite Erny Yuniarti Fauzi Fauzi Githa Noviana Guntoro Guntoro . Hardy Guchi Hendrik Dharmansyah HIDAYATULAH MUNAWAROH Imam Ramadhan Intan Safitri Jamila Jamilah Jamilah Jamilah Jul Bahori Panggabean Juli M. Hutahuruk Julpan Lynneus Sitohang Lady Sarah Lisa Mawarni Luthfi Aziz Mahmud Siregar M.M.B. Damanik Manullang, Yedija Mardiana Wahyuni Mardiana Wahyuni@gmail.com Marta Ritonga Meilissa Damayanti Lumban Gaol Muhammad Maulana Ghifari Muhammad Nazarul Yanis Muhammad Titan Hafizal Muhammad Yusuf Dibisono Mukhlis Mukhlis Mukhlis MUKHLIS MUKHLIS Mukhlis Mukhlis MUKHLIS MUKHLIS Muklis Muklis Nanda Rizky Utami Ni Komang Sri Lumbung Artha Wardani Nini Rahmawati Nofriyanto Pakolo Nofriyanto Pakolo Noviantika Nasution Novita Sari Nur Ulina Warnisyah S Sebayang, Nur Ulina Warnisyah S Okto Prandi Sihombing Posma Marbun Purba Marpaung Putra, P. A. S. Putu Oka Samirana rahmayanti rahmayanti Raja Forman Barasa Razali RAZALI RAZALI Revandy Damanik Rhiki Budianto Ricky Elmando Saragih Ridwandi Ridwandi Rino P. C. Purba Rizky Dharmawan Margolang, Rizky Dharmawan Margolang, Ropikoh Hasibuan Sakiah Sakiah Sakiah Sakiah Sarifuddin Sarifuddin Sarifuddin Sitohang, Julpan Lynneus Sitorus Sitorus Supriadi Supriadi Supriadi Susianti Susianti Marbun T Sabrina T Sabrina T. SABRINA T. SABRINA T. SABRINA T. Sabrina TENGKU SABRINA TENGKU SABRINA Tengku Sabrina Tengku Sabrina Tengku Sabrina Tioner Purba Tosuko Utomo Triani, Agus vijay sitanggang Viky Fatmala Wahyuni, Mardiana Wilda Lumban Tobing Yaya Hasanah Yedija Manullang Yopie Priest Aulia Sinaga yudi sudarno sihombing Zoel Hani Hasibuan Zulkifli Nasution Zulkifli Nasution