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All Journal Jurnal Penelitian Saintek Agrikultura Zuriat Jurnal Natur Indonesia Berkala Ilmiah Pertanian Jurnal Tanaman Industri dan Penyegar Dharmakarya : Jurnal Aplikasi Ipteks Untuk Masyarakat Journal of Degraded and Mining Lands Management Jurnal Agroekoteknologi Jurnal Agro Kultivasi AGRISAINTIFIKA Jurnal Ilmu-ilmu Pertanian Jurnal Ilmiah Universitas Batanghari Jambi SAINS TANAH - Journal of Soil Science and Agroclimatology Agrotekma: Jurnal Agroteknologi dan Ilmu Pertanian AGROSAINSTEK: Jurnal Ilmu dan Teknologi Pertanian Martabe : Jurnal Pengabdian Kepada Masyarakat Paspalum: Jurnal Ilmiah Pertanian Jurnal Teknologi Pertanian Andalas Agroekoteknologi Tropika Lembab Soil REns Jurnal Kridatama Sains dan Teknologi Jurnal Agro Wiralodra Agro Sintesa : Jurnal Ilmu Budidaya Pertanian Agro Tatanen Agrifarm Jurnal Produksi Ternak Terapan (JPTT) Journal of Education Technology Information Social Sciences and Health Jurnal Agro Nusantara Jurnal Pertanian Khairun (JPK) Agroland: Jurnal Ilmu-ilmu Pertanian Jurnal Ilmiah Teknologi Pertanian Agrotechno AGROLOGIA: Jurnal Budidaya Tanaman
Rija Sudirja
Departemen Ilmu Tanah Dan Sumber Daya Lahan, Fakultas Pertanian, Universitas Padjadjaran
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Neuroscience Nursing Public Health Social Sciences Veterinary

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Properties of Azotobacter as biofertilizer and biocontrol of Fusarium Reginawanti Hindersah; Vera Oktavia Subardja; Pujawati Suryatmana; Rija Sudirja
AGROLOGIA: Jurnal Ilmu Budidaya Tanaman Vol 13 No 1 (2024): Agrologia : Jurnal Ilmu Budidaya Tanaman
Publisher : Fakultas Pertanian, Universitas Pattimura Ambon, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/agrologia.v13i1.12761

Abstract

The Nitrogen-fixer bacteria, Azotobacters, are the potential Plant Growth Promotion Rhizobacteria for increasing plant growth and productivity due to their prominent role as biofertilizer dan bioprotectant. The objective of the experiment was to identify the plant-growth related characteristic of various Azotobacter isolates and to test their antagonism to soil-borne pathogen Fusarium. The five Azotobacter isolates were grown in Nitrogen-free slant for determining their ability to fix the Nitrogen, producing phytohormones and exopolysaccharides, and to inhibit the growth of Fusarium oxysforum f.sp. batatas. The results verified that all isolates synthesize various concentration of Indole acetic acid, Gibberellin, Zeatin and Kinetin as well exopolysaccharide in the N-free media. However, this study found that Azotobacter AzV1 did not detected to fix the N. This study suggests that Azotobacter has a dual function as biofertilizer and bioprotectant.
Path analysis of phosphorus dynamics and chili response to low rank coal-derived humic acid in P-deficient Inceptisols Hermawan, Mega Kartika; Sofyan, Emma Trinurani; Sudirja, Rija; Nurbaity, Anne; Fitriatin, Betty Natalie; Mulyani, Oviyanti; Setiawati, Mieke Rochimi; Djuansah, Muhamad Rahman
Journal of Degraded and Mining Lands Management Vol. 13 No. 2 (2026)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2026.132.9893

Abstract

Jatinangor Inceptisols are formed from volcanic material with a high concentration of iron oxide and a low concentration of phosphorus (P), which leads to high rates of P fixation and low P fertilization efficiency. The situation is exacerbated by intensive agricultural practices. This research was conducted to assess the effect of humic acid derived from low rank coal (AHL) as a soil conditioner in enhancing P availability and chili response in P-deficient Inceptisols. The experiment was conducted in the greenhouse of the Soil Chemistry and Plant Nutrition Laboratory at Universitas Padjadjaran. AHL treatments were combined with various doses of SP-36 fertilizer to evaluate their direct and indirect effects on soil chemical properties, phosphate-solubilizing bacteria (PSB) populations, P uptake, and plant responses. The results showed that AHL application did not cause metal toxicity symptoms and significantly increased potential P, available P, cation exchange capacity (CEC), and total PSB populations. The best results were obtained with a combination of AHL at 30 kg ha?¹ and SP-36 at 125 kg ha?¹, which optimally enhanced P dynamics and chili yields. AHL was proven to reduce the need for inorganic P fertilizer by up to 50% without compromising chili yield or quality. These findings indicate that AHL has great potential to be developed as a locally sourced soil conditioner to support sustainable agriculture and the use of more environmentally friendly low-rank coal.
PENGENALAN TEKNIK PEMELIHARAAN DAN MANFAAT JAMBU KRISTAL DI DESA MEKAR JAYA, KECAMATAN BANJARAN, KABUPATEN BANDUNG Santi Rosniawaty; Mira Ariyanti; Erni Suminar; Rija Sudirja
Martabe : Jurnal Pengabdian Kepada Masyarakat Vol 6, No 9 (2023): Martabe : Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jpm.v6i9.3205-3211

Abstract

Konsumsi buah-buahan sangat dianjurkan untuk peningkatan gizi masyarakat dan ketahanan tubuh. Namun demikian kemampuan untuk membeli buah-buahan masih terbatas karena pada umumnya masyarakat lebih mementingkan untuk membeli kebutuhan pokok. Ditengah masa endemi ini, diperlukan daya tahan tubuh yang tinggi agar tidak sakit, salah satunya melalui asupan buah dengan kandungan vitamin C yang tinggi. Melalui penanaman jambu kristal dan dipelihara dengan baik di pekarangan rumah masyarakat, diharapkan dapat memenuhi kebutuhan gizi (khususnya vitamin C) secara mandiri tanpa membeli. Dipilihnya Kampung Empel, Desa Mekar Jaya, Kecamatan Banjaran, Kabupaten Bandung karena merupakan daerah yang cocok untuk ditanami jambu kristal dan masyarakatnya mempunyai pekarangan yang luas. Metode yang digunakan dalam kegiatan pengabdian kepada masyarakat (PKM) ini adalah penjajagan, penyuluhan, pendampingan dan evaluasi. Materi yang diberikan saat penyuluhan adalah pemeliharaan tanaman jambu kristal dan manfaatnya untuk kesehatan. Kegiatan yang dilakukan adalah persiapan bibit jambu kristal, penanaman jambu kristal di halaman dan pemeliharaan jambu kristal. Hasil dari kegiatan ini adalah masyarakat lebih mengenal pemeliharaan jambu kristal dan manfaat buah jambu kristal  serta peningkatan minat masyarakat untuk meningkatkan gizi dan daya tahan tubuh melalui konsumsi jambu kristal, mengingat masa pandemi covid saat itu. Kegiatan penyuluhan ini berdampak positif terhadap prospek dan minat untuk menanam jambu kristal di pekarangan rumah.
Co-Authors Abdul Halim luthfi Abraham Suriadikusumah Ade Ismail Ade Setiawan Ade Setiawan Ade Setiawan Agung Karuniawan Agus Susanto Agus Wahyudin Ainun Fadilah Al- Adawiah, Alin Robial Alin Robial Al- Adawiah Andre R. Daud Anne Nurbaity Anni Yuniarti Apong Sandrawati Asep Anang Asmi Maulina Bahjatien, Isnaini Dzatie Benny Joy Benny Joy Benny Joy Benny Joy Benny Joy Benny Joy Betty Natalie Fitriatin Budi Nugroho Budy Frasetya Taufik Qurrohman Chamid Itmam Citra Bakti, Citra Cucu Suherman Daud Siliwangi Saribun Dedi Ruswandi Desvia Diyanti Nursyabani Dimas Nur Annisa Dimas Nur Annisa Istiqomah Dirga Sapta Sara Diyan Herdiyantoro Djuansah, Muhamad Rahman Djuwansah, Muhamad Rachman Elisabeth Mora Emma Trinurani Emma Trinurani Sofyan Encep Hidayat Salim Erika Wahyuni Saragih Erna Dewi Erna Dewi . Erni Suminar Eso Solihin Eso Solihin Fadhilah, Rifat Ferdy Firmansyah Furqan Mubarak Djula Ganjar Herdiansyah Ganjar Herdiansyah, Ganjar H. Afrianto H. Afrianto, H. Haris Maulana Hendi Hidayat Hendi Hidayat, Hendi Hermawan, Mega Kartika Husein, Anne Yuliana Iin Susilawati Indra Permana Intan Ratna Dewi Anjarsari Islamy Hasan Hermawan Johar Arifin Leony Agustine Leony Agustine Liana Sari, Stefina Lindung Tri Puspasari Lubis, Ary Satria M. Arief Sholeh Mahfud Arifin Masruri, Muhammad Kholil Maulana, Haris Maya Damayani Maya Damayani Maya Damayani Meddy Rachmadi Mieke Rochimi Setiawati Mira Ariyanti Mochamad Arief Sholeh Mochamad Arief Soleh Mubarok, Zakka Tafwidh Muhammad Farghan Fauzan Nadia N. Kamaluddin Nadia Nuraniya Kamaluddin Oviyanti Mulyani Pudjawati Suryatmana Pujawati Suryatmana Purwono Purwono, Purwono Rachmad Akbar Rachmat Harryanto Rachmat Harryanto Rachmat Haryanto Rachmat Haryanto, Rachmat Rani Ros Reginawanti Hindersah Rhazista Noviardi Rhendika Indra Yunianto Rina Devnita Rizky Febria RR Darlita RR Darlita Rudianto, Safira Damayanti Salsabila Dwi Ananda Sandrawati, Apong Santi Rosniawaty Santoso, Dwi Andreas Sari, Stefina Liana Sri Muji Rahayu Stefina Liana Sari Suryatma, Pujawati Suryo Firnato Syaiful Anwar Syariful Mubarok Syfani Fitria Syfani Fitria Tualar Simarmata Vera Oktavia Subardja Vera Oktavia Subarja Wawan Sutari Wicaksono, Ficky Yulianto Wulan Sri Damayanti Yulianti Machfud Yuliati Machfud Yusup Hidayat Zahra, Siti Revita