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All Journal HAYATI Journal of Biosciences Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Jurnal Ilmu Pertanian Indonesia Jurnal Fitopatologi Indonesia MEDIA KONSERVASI Jurnal Ilmu Tanah dan Lingkungan (Journal of Soil Science and Environment) Jurnal Ilmiah Aplikasi Isotop Radiasi Microbiology Indonesia Journal of Tropical Soils Jurnal Penelitian Hutan Tanaman Plumula : Berkala Ilmiah Agroteknologi Pelita Perkebunan Journal of Degraded and Mining Lands Management Jurnal Sumberdaya Hayati ZOO INDONESIA Jurnal Penelitian Karet AGRISAINTIFIKA Jurnal Ilmu-ilmu Pertanian Jurnal Bioteknologi & Biosains Indonesia (JBBI) Caraka Tani: Journal of Sustainable Agriculture Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Journal of Tropical Crop Science Jurnal Entomologi Indonesia Agroekoteknologi Tropika Lembab Agro Bali: Agricultural Journal Jurnal Kesehatan Jurnal Tanah dan Iklim Zoo Indonesia Prosiding Seminar Nasional Biologi
RAHAYU WIDYASTUTI
Departemen Ilmu Tanah Dan Sumberdaya Lahan, Fakultas Pertanian IPB, Jl. Meranti Kampus IPB Dramaga, Bogor 16680
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Immunology & microbiology Materials Science & Nanotechnology Medicine & Pharmacology Nursing Public Health Other

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Efek Iradiasi Gamma Co-60 dan Ultraviolet terhadap Karakteristik dan Kemampuan Pelarutan Fosfat dan Kalium Aspergillus costaricaensis dan Staphylococcus pasteuri Maulinda, Restiana; Anas, Iswandi; Widyastuti, Rahayu; Citraresmini, Ania
Plumula : Berkala Ilmiah Agroteknologi Vol. 14 No. 1: Januari 2026
Publisher : Program Studi Agroteknologi, Fakultas Pertanian, UPN "Veteran" Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/plumula.v14i1.248

Abstract

Radiasi gamma Co-60 dan ultraviolet berpotensi untuk meningkatkan kemampuan mikroba dalam melarutkan fosfat dan kalium. Penelitian ini bertujuan untuk mengetahui pengaruh radiasi gamma Co-60 dan ultraviolet terhadap karakteristik serta indeks kelarutan fosfat dan kalium Aspergillus costaricaensis dan Staphylococcus pasteuri. Tahap penelitian terdiri dari iradiasi gamma Co-60 (dosis 0; 5; dan 10 kGy) dan ultraviolet (lama penyinaran 0; 1; dan 5 jam). Hasil menunjukkan bahwa iradiasi gamma Co-60 dan ultraviolet menyebabkan perubahan karakteristik pada mutan A. costaricaensis dan mutan S. pasteuri, meliputi kecepatan pertumbuhan, jumlah koloni, ukuran, warna, dan bentuk koloni. Menariknya, perlakuan ultraviolet tidak mengakibatkan perubahan karakteristik koloni bila dibandingkan dengan induknya. Indeks pelarutan fosfat dan kalium mutan A. costaricaensis masing-masing berkisar 2,06–2,12 dan 2,15–2,23. Sementara itu, mutan S. pasteuri menunjukkan indeks pelarutan fosfat 2,22–2,50 dan kalium 2,06–2,33.
Optimization of Empty Fruit Bunch Application to Improve Soil Organic Carbon, Total Soil Nitrogen, Earthworm Populations, and Oil Palm Performance on Spodosols Ardiyanto, Adhy; Tarigan, Suria Darma; Widyastuti, Rahayu; Nugroho, Budi; Rivai, Fathan Aldi
Caraka Tani: Journal of Sustainable Agriculture Vol 41, No 2 (2026): April
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/carakatani.v41i2.110106

Abstract

Using oil palm empty fruit bunches (EFB) as an organic amendment is a crucial strategy to improve soil quality in oil palm plantations, particularly on nutrient-poor Spodosol soils. This study aimed to evaluate the effects of 2 EFB application methods (incorporation into the soil and surface mulching) on soil organic carbon (SOC), nitrogen content, earthworm populations as soil biological indicators of fertility, and oil palm performance. A 12-month field experiment was conducted with observations every 4 months, using a completely randomized design (CRD) with 3 treatments and 9 replications each (n = 27 experimental units). The treatments included no EFB application (T0), EFB incorporated into the soil (T1), and EFB applied as surface mulch (T2). The results showed that both EFB application methods significantly increased SOC compared to the control, with the highest SOC observed in T2 (2.30±0.34%) after 12 months. Earthworm populations also increased progressively, reaching 19.33 individuals m-2 in T2. Pearson correlation analysis revealed a strong positive relationship between SOC content and earthworm abundance (r = 0.60; p < 0.001). These results confirm that EFB application, especially through surface mulching, is an effective and sustainable approach to enhancing soil quality, biological activity, and ecosystem functioning on Spodosols in oil palm plantations.
Co-Authors . Anandyawati . Giyanto . Giyanto A M Zuhud, Ervizal Abda Abda Abied Khafidhan Adiyaksa, Ivan Khofian AHMAD JUNAEDI Ana Khalisha Anandyawati, . Anas Iswandi Andreas Panjaitan Andreas Panjaitan Ania Cintaresmini Ania Citraresmini Ania Citraresmini Ania Citraresmini Antonius Suwanto Aprilianti, Nabila Apsari Putri Wulandari Ardiyanto, Adhy Aris Tri Wahyudi Atang Sutandi Atit Kanti Aviantara, Dwindrata B. Azra Zahrah Nadhirah Ikhwani Bria, Deseriana Budi Nugroho Budi Nugroho Dadang . DADANG DADANG Daniel Happy Putra Darmawan Darwis Delima Napitupulu Delima Napitupulu Devanda Ayu Lidya Permata Putri Dewi Sekar Pengerteni Dewi, Tirta Kumala Dhanti Hanifa Muslimah Dimas Syahiddin DWI ANDREAS SANTOSA Dwi Andreas Santosa Dwi Wulandari Edy Hartulistiyoso Eka Lupitasari Endang Sulistyorini Endang Sulistyorini Enny Widyati Enok Sumarsih ERNIN HIDAYATI Erwinda Erwinda Evi Ambarsari Fahrizal Hazra Fajri, Ihsanul Fany Juliarti Panjaitan Fitriyani, Indri Hapsari Giyanto Gunawan Djajakirana Hariyadi Heru Bagus Pulunggono I Made Sudiana I Nyoman Sujana Ida Widiyawati Idris Idris Idris, Komaruddin Irawati, Arfi Irdika Mansur Iswandi Anas Iswandi Anas Iswandi Anas Iswandi Anas Iswandi Anas Chaniago Jekvy Hendra Jekvy Hendra Joko Warino Kartika, Sari Yulia Khairiyah, Yaumil Laksmita Prima Santi MAIPA DIA PATI Masaru Kobayashi Maulinda, Restiana Misbakhul Bait Nabila Dianisa Niken Puspita sari Nofrifaldi Ohiwal, Morgan Priyo Cahyono Putri Wulandari, Dwi Ramadhani Sri Astuti, Andi Febrianti Ratnawati Lantifasari Remila Selvany Risa Rosita Rivai, Fathan Aldi Rohani Cinta Badia Ginting Rumella Simarmata Rury Kurniawan Safira Eka Aprianti Sanjaya, Wilhelmus Terang Arga Sari Yulia Kartika Sarjiya Antonius SATRIYAS ILYAS Satya Nugroho Soetanto Abdoellah Sri Sulisawati Suciati, Fuzi Sugeng Santoso Sugiarto, Petrus Sugiyanta , Sukmadewi, Desak Ketut Tristiana Sumarsih, Enok Suria Darma Tarigan Suryo Wiyono Syaiful Anwar Taufiq Hidayat Tita Puspitasari Titik Tri Wahyuni Umadi, Sarah Sakinah Umi Hidayati Umi Hidayati Utami, Aditya Dyah Widrializa, . Wilhelmus Terang Arga Sanjaya Wilhelmus Terang Arga Sanjaya Wilhelmus Terang Arga Sanjaya Winda Ika Susanti Wiwik Eko Widayati Yayuk R. Suhardjono Yayuk Rahayuningsih Suhardjono Yayuk Rahayuningsih Suhardjono Yuni Lisafitri, Yuni Yusuf, Sri Malahayati Zuhud, Evrizal A M