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All Journal HAYATI Journal of Biosciences Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Buletin Agrohorti Jurnal Hortikultura Indonesia (JHI) Jurnal Silvikultur Tropika (JST) MEDIA KONSERVASI Jurnal Penelitian Hutan dan Konservasi Alam Jurnal Penelitian Hasil Hutan Indonesian Journal of Agricultural Science Buletin Plasma Nutfah AGRIVITA, Journal of Agricultural Science Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) agriTECH Jurnal Agro Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat Jurnal Penelitian Pembelajaran Fisika Jurnal Penelitian Pertanian Terapan Jurnal Penelitian Pertanian Tanaman Pangan Jurnal Geografi, Edukasi dan Lingkungan JURNAL PERTANIAN PRESISI (JOURNAL OF PRECISION AGRICULTURE) Journal of Tropical Crop Science MENDIDIK: Jurnal Kajian Pendidikan dan Pengajaran AGROSAINSTEK: Jurnal Ilmu dan Teknologi Pertanian Alignment: Journal of Administration and Educational Management JURNAL PANGAN Jurnal Ilmiah Tata Sejuta STIA Mataram Jurnal Agrium Rawa Sains: Jurnal Sains STIPER Amuntai Jurnal Abdi Insani Jurnal Ilmiah Manajemen Kesatuan Jurnal Pendidikan Islam Rabbani Agro Sintesa : Jurnal Ilmu Budidaya Pertanian Dinamika Pendidikan Rengganis Jurnal Pengabdian Masyarakat Mavis : Jurnal Desain Komunikasi Visual Media Pertanian Jurnal Teknik Mesin Mechanical Xplore Jurnal Sains Terapan : Wahana Informasi dan Alih Teknologi Pertanian Jurnal Pusat Inovasi Masyarakat Tedc Jurnal Sosial dan Humanis Sains Nusantara of Engineering (NOE) Jurnal Archipelago Indonesian Mining Journal
AHMAD JUNAEDI
Departemen Agronomi Dan Hortikultura, Fakultas Pertanian, Institut Pertanian Bogor (IPB University), Jl. Meranti, Kampus IPB Darmaga, Bogor 16680, Indonesia
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Journal : Journal of Tropical Crop Science

 1 
Evaluation of Growth and Physiological Responses of Three Rice (Oryza sativa L.) Varieties to Elevated Temperatures Kurniawan, Dede Yudo; Junaedi, Ahmad; Lubis, Iskandar; Sunarti, Titi Candra
Journal of Tropical Crop Science Vol 6 No 01 (2019): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (358.944 KB) | DOI: 10.29244/jtcs.6.01.17-23

Abstract

Temperature is a primary factor that affects the rate of plant development and has great impacts on plant growth, metabolism, and yield. A study was conducted to analyze the effects of elevated temperature on rice morphological and the physiological growth. The research was arranged in a nested randomized block design consisting of two factors, temperatures and rice varieties. Elevated temperatures were provided through the uses of different materials of plastic roof and walls to have an average and maximum temperature of 27.6 °C and 41.6 °C (T1); 28.1°C and 43.8 °C (T2), and 29.5°C and 47.1 C (T3), respectively. The study used three varieties of rice, “Ciasem”, “Ciherang”, and “IR64”. All rice varieties showed signifi cant increases in tiller number per hill and shoot dry weight, but had a decrease in the stomatal conductance, transpiration rate, and SPAD values at grain fi lling stage with the increasing temperatures. The number of tiller per hill increased when temperature was elevated from 27.6 to 28.1 and 29.5°C by about 29.9 and 21.3%, respectively.
Growth and Yield of Kalimantan Landrace Rice and “IPB 8G” as Affected by Dose and Time of Application of Nitrogen Fertilizer Faisal, Faisal; Lubis, Iskandar; Junaedi, Ahmad; Sugiyanta, Sugiyanta
Journal of Tropical Crop Science Vol 6 No 02 (2019): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (517.501 KB) | DOI: 10.29244/jtcs.6.02.129-137

Abstract

The study aimed to determine the effect of nitrogen fertilizer dose and the frequency of application on the growth and production of landrace rice Kalimantan and a new rice cultivar "IPB 8G". The study was conducted in December 2017 until June 2018 at the Sawah Baru Experimental Field, Bogor Agricultural University, West Java, Indonesia. The experimental design was a split-split plot consisting of three treatment factors, i.e. rice cultivars (main plots), fertilization time (sub-plots) and fertilizing doses (sub-plots). The three rice cultivars used in this trial were local cultivars "Mayas" and "Samarinda", and a newly developed rice cultivar "IPB 8G". The application rates of Nitrogen were 0, 75, and 150 kg N.ha-1 applied at different phases of rice growth: 50% N dose was applied at planting, 25% N dose at the vegetative phase, and 25% at the primordial phase. The different rates of N fertilizer were applied four times, 40% at planting, 20% during the vegetative phase, 20% at the primordial phase, and 20% at heading. Each treatment consisted of three replications totalling 54 experimental units. The N fertilizer application gave a significant effect on all growth parameters except for the harvest index. Time of fertilization significantly affected rice panicle number per hill and harvest index. There were significant differences in the growth of the three rice cultivars, except for the number of tillers. Rice crops fertilized three times with a dose of 75 kg N.ha-1 had the highest number of tillers at 5 week after planting, but it was not significantly different from N at 150 kg.ha-1. The highest grain yield of 2.9 t.ha-1 was obtained from "IPB 8G" cultivar fertilized with 75 kg.ha-1 of nitrogen.
Growth Promotion of Oil Palm Seedlings (Elaeis guineensis Jacq.) with Slow-Release Fertilizer Application Harahap, Adiansyah; Hariyadi; Junaedi, Ahmad; Prasetyo, Lilik Budi
Journal of Tropical Crop Science Vol. 12 No. 01 (2025): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jtcs.12.01.254-260

Abstract

Oil palm (Elaeis guineensis Jacq.) is a major source of vegetable oil and an important plantation commodity in the Indonesian economy. This study aims to determine the effect of slow-release fertilizer on the growth of oil palm seedlings in the primary nursery and to determine the nutrient status through laboratory analysis and spectroradiometer. The study was conducted at the IPB experimental station in Cikabayan, Dramaga, Bogor. Analysis of soil and leaf samples at the AGH Test Laboratory of the IPB University Department from December 2023 to July 2024. This study used a complete randomized block design with one factor, a nine-level fertilizer dose, and was repeated four times. Each experimental unit has 10 plants, so the total plant population is 360. Slow-release fertilizer can supply nutrients for a period of weeks. This study tested if it would benefit the growth of oil palm seedlings in the primary nursery. A slow-release fertilizer dose of 75% provides the best increase in oil palm seedling growth, whereas, at 50 and 150% doses, it did not increase compared to the control. The agronomic effectiveness value is above 95%.
Agronomic Performance and Light Interception in a Multi Canopy Rice Cultivation System Husna; Junaedi, Ahmad; Purnamawati, Heni
Journal of Tropical Crop Science Vol. 12 No. 01 (2025): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jtcs.12.01.77-88

Abstract

Vertical space optimization through a multi-canopy system can potentially increase rice production. This research aims to evaluate the agronomic performance, light interception, and production of rice plants cultivated with a multi-canopy system. This research was conducted at the Sawah Baru Experimental Farm, IPB University. Rice varieties used two common height plants (“Inpari 30” and “Inpari 32”) and the taller plants (“IPB 9G”). This research consisting of nine treatment combinations of cultivation system: mono-variety (“Inpari 30”, “Inpari 32”, and “IPB 9G”), combination of two varieties in one hill multi-canopy (“Inpari 30”-“IPB 9G” and “Inpari 32”-“IPB 9G”), inter-variety one-insertion multi-canopy (“Inpari 30”-“IPB 9G” and “Inpari 32”-“IPB 9G”), and inter-variety two-insertion multi-canopy (“Inpari 30”-“IPB 9G” and “Inpari 32”-“IPB 9G”). The results showed morphological and physiological performance as good in a multi-canopy system (inter-variety one insertion) on the variables of the plant height, number of panicles per clump, panicle length, number of grains per hill, weight of grains per hill, photosynthetic rate and land equivalent ratio (LER). The percentage of light interception in the multi-canopy system decreased by 19.13-61.54%. The inter-variety one-insertion multi-canopy with the “Inpari 30”-“IPB 9G” combination increases yield potential by 10.18%, and the “Inpari 32”-“IPB 9G” combination increases by 13.81% compared to the mono-variety. The combination of the “Inpari 30”- “IPB 9G” and “Inpari 32”-“IPB 9G” variety in an inter-variety one-insertion multi-canopy system produces an LER value of 1.75 and 1.64; this shows that the inter-variety one insertion multi-canopy system is promising to increase rice production.
Co-Authors . Fackrurrozi A.A. Ketut Agung Cahyawan W Abdullah, Buang Achirul Rahman Ade Wachjar Ade Wachjar Adrian, Fahrul Ahmad Rifqi Fauzi Ahmad Rojidin, Ahmad Amrullah Amrullah Andes Prayuda Yunanda Andes Prayuda Yunanda Andhika Silva Yunianto Angelita P. Lestari Angelita Puji Lestari Angelita Puji Lestari Angelita Puji Lestari Antonio C Situmorang Arif K Wijayanto Arif Kurnia Wijayanto Arinal H.I. Nurrahma Arinal Haq Izzawati Nurrahma Arinal Haq Izzawati Nurrahma Asep Hidayat Atika Romalasari Avry Pribadi Azizah, Renata Lintang Bambang Sapta Purwoko Baran Wirawan Buang Abdullah Buang Abdullah Buang Abdullah Buang Abdullah Buang Abdullah Cahyana, Destika Cahyani, Gesa Nur Chiharu Hongo, Chiharu Choirul Huda Choirul Huda Christian Herdinata Christina Whidya Utami dan Yoshinori Yamamoto Deden Derajat Matra Desta Wirnas Didi Darmadi Didi Darmadi, Didi Didy Sopandie Dodi Frianto, Dodi Dwi Guntoro Dwi Rachmina Edi Santosa Eka Maulidiya, Sherly Eko Sutrisno, Eko Elsass Riela Tambunan Erwin Hermawan Fadillah, Arvin Muhammad Faisal Faisal Faqih Udin Fernando Sormin Fitrianingrum Kurniawati, Fitrianingrum Fitriansyah, Muhammad Ramdhani Ghulamhdi, Munif GUSMAINI GUSMAINI, GUSMAINI HAJRIAL ASWIDINNOOR Harahap, Adiansyah Harahap, Yuanda Pangi Hariyadi Herdhata Agusta Herman Wafom Tubur Heru Setiawan Heru Setiawan Hery Kurniawan Hifzil Kirmi Hiroshi Ehara Hiroshi Ehara Homma, Koki Husna Ida Widiyawati Idiatsyah, Rully Amelia Ika Ari Safitri Irdika Mansur Irdika Mansur Iskandar Lubis Istiqomah Samal Iswari Saraswati Dewi Jayawarsa, A.A. Ketut Jun-Ichi Sakagami Khairani Khairani Khoirudin Khoirudin, Khoirudin Kurniawan, Dede Yudo KWANG HO KIM Lestari, Angelita Puji Lestari, Nur Annisa Indah Lilik Budi Prasetyo LILIK BUDIPRASETYO Luh Putu Ratna Sundari M A Chozin M, Musdar M. Dewi Manikta Puspitasari Mahendra Wibawa Maisura Maisura Maman Mulya Karnama Maria Paulina Maulidiya, Sherly Eka Maya Melati Michael Daru Enggar Wiratmoko Miftahul B.R. Khamid Miftakhul Bakhrir Rozaq Khamid Miftakhul Maulidina Miska, Moch. Ega Elman Mohamad Rahmad Suhartanto Muhamad Ahmad Chozin Muhammad Ahmad Chozin Muhammad Prama Yufdy, Muhammad Prama Muhammad Syukur Mulyawan, Zidane Munif Ghulamahdi Musdar Nufvitarini, Winda Nurjannah Rambe Nurul Khumaida Ospa Pea Yuanita Meishanti Oteng Haridjaja Purwono Purwono Purwono, Purwono Putri, Lystiana Dewi RAHAYU WIDYASTUTI Rahman, Mumammad Arif Ramadhani, Ahmad Renica Nurhermawati Ricky Andryan Rosdianwinata, Eka Safitri, Ika Ari Sahid Agustian Hudjimartsu Sarah Najma Salimah Shaleha Istiqamah Samal Shandra Amarillis Siti Wahyuningsih Situmorang, Antonio C Slamet Susanto Sofyan Zaman Sopandie, Didie Sormin, Fernando Sudradjat Sudradjat Sugianta Sugianta Sugianta, Sugianta Sugiyanta Sukarman Sukarman Sukmawati, Riska Sunardi Supijatno Suroso Suroso Suryo Wiyono Suswanta Suwarno, Punjung Medaraji Syakir, Andi Muhammad Thiyana, Thyana Titi Candra Sunarti Titin Budi Wahyuti Trikoesoemaningtyas Ummu Kalsum Wibowo, Wisnu Hari Winda Nufvitarini Wisnu Hari Wibowo Yati Astuti Yuanda Pangi Harahap Yudi Setiawan Yuti Giamerti, Yuti Zahra, Sabrina Aulia