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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Buletin Agrohorti Jurnal Ilmu Pertanian Indonesia SOCA: Jurnal Sosial Ekonomi Pertanian JOURNAL ON SOCIAL ECONOMIC OF AGRICULTURE AND AGRIBUSINESS Agrovigor: Jurnal Agroekoteknologi Jurnal Ilmu-Ilmu Peternakan (Indonesian Journal of Animal Science) AGRIVITA, Journal of Agricultural Science Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) agriTECH Jurnal Agro Jurnal Penelitian Pertanian Terapan Journal of Applied Geospatial Information Journal of Regional and Rural Development Planning Journal of Tropical Crop Science AGROSAINSTEK: Jurnal Ilmu dan Teknologi Pertanian HUKUMAH: Jurnal Hukum Islam Jurnal Agrium Jurnal Pusat Inovasi Masyarakat Journal of Agrosociology and Sustainability
Iskandar Lubis
Departemen Agronomi Dan Hortikultura, Fakultas Pertanian, Institut Pertanian Bogor (Bogor Agricultural University), Jl. Meranti, Kampus IPB Darmaga, Bogor 16680, Indonesia
Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Medicine & Pharmacology Physics Social Sciences Other

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Effect of nitrogen doses on growth and yield of several varieties of tungro-infected rice plant Achmad Gunawan; Purwono; Lubis, Iskandar; Widiarta, I Nyoman
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 51 No. 2 (2023): Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy)
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24831/ija.v51i2.46091

Abstract

Tungro is still a problem in efforts to increase rice production, it can disrupt the stability of rice production if conditions worsen. Plant fertilizer application is an integral part of plant cultivation, especially nitrogen fertilizer. Improper utilization of fertilizers can harm agriculture by increasing plant vulnerability to pests and diseases. Thus, the purpose of the study was to examine the effects of various doses of nitrogen on the agronomic performance of rice plants, as well as their susceptibility to tungro. The research was conducted at the Greenhouse, Sukamandi, and the Muara Experimental Field, Center for Rice Research, Bogor. The experiments, both in the greenhouse and field, used a split-plot randomized complete block design with three replications. The main plots were variety, while the subplots were nitrogen dosage. The results showed that Inpari 36 Lanrang was better than Ciherang and IR64 in terms of plant height, number of tillers, empty grain per clump, leaf greenness, and yield/pot in the greenhouse. While from the field experiment, varieties have different flowering times, plant heights, number of filled grains, number of empty grains, 1,000-grain weight, net assimilation rate, yield/plot, and tungro incidence. The use of nitrogen fertilizer affected flowering time in the greenhouse and affected productive tillers, yield per plot in the field, and the greenness of the leaves of healthy plants. The optimum dose is 167.5 kg ha-1 nitrogen. As a result, it is recommended that controlling tungro disease should involve the integration of fertilizer application that is balanced with the use of resistant varieties.Keywords: agronomic performance, nitrogen rates, plant diseases, resistant varieties, tungro infection
Morphophysiological and production responses of peanut (Arachis hypogaea L.) ‘Takar 2’ to organic, biological, and NPK fertilizers Darmasandi, Arjuna Puji; Lubis, Iskandar; Purnamawati, Heni
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 53 No. 1 (2025): Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy)
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24831/jai.v53i1.62880

Abstract

Peanuts (Arachis hypogaea L.) is the second most important type of legume after soybeans in Indonesia. Fertilizers were given in either organic or inorganic forms. However, the continuous use of chemical fertilizers was found to have negative impacts on the environment and the microorganisms in the soil. Therefore, organic and biological fertilizers were recommended because they had positive effects on both the environment and the soil’s microorganisms. Some of the bacteria that were beneficial for plant growth were Pseudomonas sp. and Azotobacter sp. This study aimed to analyze the use of organic fertilizers, biological fertilizers, and NPK combinations on the growth and yield of peanut plants of the Takar 2 variety. The study was conducted from March to June 2024, located at the Leuwikopo Experimental Station of IPB, Bogor, Indonesia. The experiment used a randomized complete block design (RCBD) with two factors and three replications. The factors are NPK fertilizer doses (100% and 50% recommended dose) and types of organic + biological fertilizer (control, Azotobacter sp., Pseudomonas sp., humate, and a combination of humate and biological fertilizer). Observations were made on 5 sample plants per treatment. The characteristics observed were plant morphology, physiological characteristics, and plant production. The results of the study showed that the application of 100% NPK fertilizer at the recommended dose, in combination with Pseudomonas sp., Azotobacter sp., and humate, had a significant effect on various morphological, physiological, and production-related plant variables. This study shows the potential for a combination of NPK and organic biological fertilizers to increase the growth and production of peanuts. Keywords: Azotobacter sp; humate; morphology; physiology; Pseudomonas sp
Pertumbuhan dan Produksi Empat Genotipe Kedelai (Glycine max (L.) Merril) dengan Cara Pemberian N yang Berbeda Mujahid, Sitta; Lubis, Iskandar; Zamzami, Ahmad
Buletin Agrohorti Vol. 11 No. 3 (2023): Buletin Agrohorti
Publisher : Departemen Agronomi dan Hortikultura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/agrob.v11i3.48438

Abstract

Kedelai merupakan komoditas pangan terpenting ketiga setelah jagung dan padi. Sayangnya, produksi kedelai dalam negeri belum mampu mencukupi kebutuhan nasional. Beberapa cara yang dapat dilakukan untuk meningkatkan produksi kedelai yaitu pemupukan nitrogen dan penggunaan varietas unggul. Penelitian ini bertujuan mempelajari pertumbuhan dan produksi empat genotipe kedelai terhadap perbedaan cara pemupukan nitrogen. Penelitian dilaksanakan di Kebun Percobaan Sawah Baru dan Laboratorium Pascapanen pada bulan Maret hingga Agustus 2019. Penelitian ini menggunakan rancangan kelompok lengkap teracak (RLKT) dengan dua faktor percobaan, yakni genotipe (Tanggamus, Anjasmoro, Manshuu Masshokutou, dan SJ4) dan dosis pemupukan nitrogen (0 kg ha-1, 25 kg ha-1 melalui alur, dan pada umur 3,4,5,6 MST (minggu setelah tanam) dengan volume semprot 400 L ha-1). Genotipe kedelai menunjukkan respon yang nyata terhadap pertumbuhan tanaman pada tinggi tanaman, indeks luas daun, umur tanaman, nilai kehijauan daun, dan jumlah buku produktif. Genotipe juga memiliki respon yang nyata terhadap komponen hasil meliputi jumlah polong per tanaman, jumlah biji per tanaman, bobot 100 butir biji, serta persentase kondisi biji normal dan keriput. Perbedaan pemupukan nitrogen hanya berpengaruh terhadap umur berbunga tanaman. Tanggamus memiliki respon pertumbuhan dan hasil paling baik jika dibandingkan dengan genotipe lainnya berdasarkan tinggi tanaman, indeks luas daun, jumlah cabang dan buku produktif, persentase biji normal, jumlah polong, serta jumlah dan bobot biji per tanaman. Kata kunci: inokulan, komponen hasil, persentase biji normal
Pengaruh Pemberian Amelioran dan Aktinobakteri terhadap Pertumbuhan dan Produksi Kedelai (Glycine max (L. (Merr)) dengan Budidaya Jenuh Air pada Lahan Pasang Surut Hidayah , Riska Firotul; Ghulamahdi, Munif; Lubis, Iskandar
Buletin Agrohorti Vol. 12 No. 2 (2024): Buletin Agrohorti
Publisher : Departemen Agronomi dan Hortikultura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/agrob.v12i2.54531

Abstract

Kedelai adalah komoditas utama untuk pangan nasional, dengan lebih dari 70% kebutuhan dipenuhi melalui impor. Hal ini disebabkan rendahnya produksi nasional akibat sentralisasi produksi di lahan sawah, sementara permintaan terus meningkat tiap tahun. Pemanfaatan lahan rawa pasang surut merupakan salah satu langkah untuk meningkatkan produksi kedelai, akan tetapi lahan rawa pasang surut memiliki pH rendah serta kandungan Fe dan Al yang cukup tinggi. Aplikasi amelioran dan aktinobakteri mampu memperbaiki sifat kimia tanah, sehingga mampu meningkatkan produktivitas kedelai. Tujuan penelitian ini adalah untuk mengetahui pengaruh teknik budidaya jenuh air, dan pemberian amelioran berupa kapur, pupuk kandang, abu sekam, serta aplikasi aktinobakteri terhadap pertumbuhan dan produktivitas kedelai varietas Tanggamus pada lahan pasang surut. Penelitian ini dilaksanakan pada tipe lahan pasang surut B di Desa Karya Bakti, Kecamatan Rantau Rasau, Kabupaten Tanjung Jabung Timur, Jambi pada bulan April sampai Agustus 2022. Penelitian ini menggunakan rancangan petak terpisah (split-plot) dengan faktor utama adalah amelioran (kontrol, 0.5 ton ha-1 kapur, kombinasi antara 0.5 ton ha-1 kapur + 0.5 ton ha-1 pupuk kandang, dan kombinasi lengkap 0.5 ton ha-1 kapur + 0.5 ton ha-1 pupuk kandang + 0.25 ton ha-1 abu sekam), dan aktinobakteri sebagai anak petak (tanpa aktinobakteri, dan dengan penambahan aktinobakteri). Hasil penelitian menunjukkan pemberian amelioran dengan kombinasi kapur + pupuk kandang + abu sekam memberikan produktivitas lebih tinggi dibandingkan perlakuan lainnya yaitu mencapai 2.43 ton ha-1. Pemberian aktinobakteri belum mampu meningkatkan produktivitas kedelai. Kata kunci: aktinobakteri, amelioran, budidaya jenuh air, pasang surut, produktivitas
Co-Authors , Yudiwanti - Suwarno - Suwarno - Triwidiyati . Suwarno Achmad Gunawan Achmad Gunawan Adi, Defiyanto Djami Adinda Soraya Nasution Afifah, Septi Nur Ahmad Ghozi Manshuri Ahmad Ghozi Mansyuri AHMAD JUNAEDI Ahmad Junaidi Ahmad Junaidi Ahmad Rifqi Fauzi Ahmad Zamzami Aidi Noor Ananda Diah Oktaviani Andrea Emma Pravitasari, Andrea Emma Arinta, Kistia Asep Hambali Atmaja, ian Surya Fitra Bagus Arrasyid Bambang Sapta Purwoko Boedi Tjahjono Butar Butar, Dewi Valentina Chiharu Hongo, Chiharu Danner Sagala Darmasandi, Arjuna Puji Dede Kismantoro Deni Suhendar Desta Wirnas Dewi Valentina Butar Butar Didi Darmadi, Didi Didy Sopandie Eko Sulistyono Endah Retno Palupi Erika Santi Faadhilah, Fajar Fahmi, Muhammad Rasyid Noor Faisal Faisal Faqih Udin Fathnoer, Veronica Firdaus Puja Santana Fitratunnisah Fitriyah Nurul Ghulamhdi, Munif Gunawan, Achmad Gustiningsih, Dini HAJRIAL ASWIDINNOOR Hambali, Asep Harahap, Ade Tika Sari Hidayah , Riska Firotul Higuchi, Hirokazu Hiroshi Ehara Hiroshi Ehara Hiroshi Ehara Homma, and Koki Homma, Koki I Nyoman Widiarta I Nyoman Widiarta Ilham iwan Tona Iswari Saraswati Dewi Jayawarsa, A.A. Ketut Khairil Anwar Khursatul Munibah Kistia Arinta Koki Homma Kondo, Tomohiro Kurniawan, Dede Yudo Luh Made Indah Sri Handari Adiputra Luh Putu Ratna Sundari M A Chozin M A Chozin Maisura Maisura Manullang, Frisca Anggriani Marlinda, Barirah Maudy Susanti Maulana, Arlingga Ichwan Megayani Sri Rahayu Miftakhul Bakhrir Rozaq Khamid Muhamad Ahmad Chozin Muhamad Syukur Muhammad Firdaus Lubis Muhammad Firdaus Lubis Muhammad Hasjim Bintoro Djoefrie Hasjim Bintoro Djoefrie Mujahid, Sitta Mujio Munandar, Arief Munawaroh, Laili Munif Ghulamahdi Novita Niken Putri Ulayyah Nur Fa'izah Zainal Ospa Pea Yuanita Meishanti Purwono Purwono Purwono Rakhman Adhiatma Renica Nurhermawati Roedhy Poerwanto Saidah, Faza Yasmin SANTUN R.P SITORUS Septi Nur Afifah Shiraiwa, Tatsuhiko Siti Nurhidayah Siti Ria Chaerunisa Sopandie, Didie Sri Astuti Rais Sri Purwanti Sugiyanta Supijatno Suwarno - Suwarto Suwarto Suwitono, Bayu Tatsuhiko Shiraiwa Titi Candra Sunarti Titiek S. Yuliani TRI KOESOEMANINGTYAS Trikoesoemaningtyas Widiatmaka Willy Bayuardi Suwarno Willy Monika Yohansyah Willy Monika Yohansyah Wira Hadianto, Wira Yamamoto, dan Yoshinori Yartiwi, Yartiwi Yati Astuti Yudi Sastro Yuti Giamerti, Yuti