JARQ:Japan Agricultural Research Quarterly
About JARQ
The Japan Agricultural Research Quarterly (JARQ) is a publication of the Japan International Research Center for Agricultural Sciences (JIRCAS), which provides readers overseas with the latest information on key achievements and developments in agricultural research in Japan, with the expectation that this information would contribute to the agricultural development of countries in tropical and subtropical regions.
The JARQ has updated its editorial policy to meet the demands of the times. The current editorial policy, revised on March 12, 2025, aims to "disseminate findings and trends in research related to Japan's agriculture, forestry, and fisheries, as well as international collaborative research involving Japanese researchers, to a broad audience both domestically and internationally through original articles and reviews." To this end, JARQ publishes original articles and research reviews, which are expected to contribute to agricultural development in developing regions.
The JARQ editorial policy revised on July 23, 1999 featured a different classification of papers. At that time, all submissions were classified as "research articles" and not limited to original articles, allowing authors to present "the aims, methods, results, and broader impact of a series of research, including previously published work."
Following the 1999 policy, the JARQ editorial office accepted research articles that included previously published content. However, the current editorial policy (revised on March 12, 2025) defines original articles as "papers that summarize the results of research conducted by the author, with no precedent in content or other aspects." Therefore, under the 2025 policy, previously published papers are no longer accepted.
All Issue
Egg Production Performance, Nitrogen Excretion, and Environmental Gas Emissions from Manure Composting of Laying Hens Fed Low-Protein Diets Supplemented with Essential Amino Acids
Wataru IIO, Risa SHIMADA, Akifumi OGINO, Itoko NONAKA, JARQ:Japan Agricultural Research Quarterly. 59(4) , 235-244 (2025-10-01)
jarq59-4_235-244.pdf1.02 MB
Recent Range Expansion of Apple Snails in East Asia and Novel Countermeasures
Keiichiro MATSUKURA, JARQ:Japan Agricultural Research Quarterly. 59(4) , 245-252 (2025-10-01)
jarq59-4_245-252.pdf1.85 MB
Hanaemaki and Sansanmaru: Low Amylose Content Rice Cultivars Suitable for Direct Seeding Cultivation in Hokkaido
Shuichi MATSUBA, Ikuo ANDO, Hiroyuki SHIMIZU, Ryota KAJI, Hitoshi ARAKI, Makoto KUROKI, Kiyoyuki MIURA, Kuniaki NAGANO, Minoru NISHIMURA, Hiroshi YASUDA, Tomohito IKEGAYA, Narifumi YOKOGAMI, Takayuki UMEMOTO, Kanae ASHIDA, Kazuo KONNO, Kunio ŌUCHI, Norio IRIKI, JARQ:Japan Agricultural Research Quarterly. 59(4) , 253-260 (2025-10-01)
jarq59-4_253-260.pdf1.36 MB
Changes in the Population Density of Bacterial Wilt Pathogen in Soil after Anaerobic Soil Disinfestation with Molasses and Subsequent Tomato Cultivation
Yasuhiro INOUE, Akira KUMAZAKI, Kazuhiro NAKAHO, JARQ:Japan Agricultural Research Quarterly. 59(4) , 261-270 (2025-10-01)
jarq59-4_261-270.pdf892.15 KB
Occurrence of Orb-Weaving Spiders and Web Construction on the Braces in Agrivoltaics Structures
Wataru MUKAIMINE, Koichi YOSHI, Ryota TSUCHIYA, Yuta OHASHI, Masahisa ISHII, Takamasa TAKEUCHI, Takuya FUJITANI, Takeshi MAGAMI, JARQ:Japan Agricultural Research Quarterly. 59(4) , 271-277 (2025-10-01)
jarq59-4_271-277.pdf1.46 MB
Fusarium spp. Causing Ear Rot and Stalk Rot of Forage Corn and Their Characteristics in Japan
Takao TSUKIBOSHI, JARQ:Japan Agricultural Research Quarterly. 59(4) , 279-286 (2025-10-01)
jarq59-4_279-286.pdf11.81 MB
The Role of Agricultural Market Information System on Farmers’ Agricultural Outcomes: Evidence from Smallholder Coffee Producers in Ethiopia
Guenwoo LEE, Aya SUZUKI, Yu Ri KIM, JARQ:Japan Agricultural Research Quarterly. 59(4) , 287-301 (2025-10-01)
jarq59-4_287-301.pdf1.36 MB
Exploring Optimal Paddy-Upland Rotation Systems Using a Multi-Objective Genetic Algorithm: Economic, Environmental, and Food Security Performance
Kiyotaka MASUDA, JARQ:Japan Agricultural Research Quarterly. 59(4) , 303-313 (2025-10-01)
jarq59-4_303-313.pdf1.42 MB
Applying the Simulation of Inter-Regional Movement of Japanese Dairy and Beef Cows: Estimation of the Surveillance Regions Following the Detection of Chronic Infectious Disease in a Disease-Free Country
Yoshinori MURATO, Yoko HAYAMA, Sonoko KONDO, Emi YAMAGUCHI, Takehisa YAMAMOTO, JARQ:Japan Agricultural Research Quarterly. 59(4) , 315-320 (2025-10-01)
jarq59-4_315-320.pdf2.52 MB
Association between Hygienic Milk Quality and Culling Rate or Mortality in Dairy Herds: A Cross-Sectional Study in Eastern Hokkaido, Japan
Akira GOTO, Mitsuo YOKOI, Naoki YAMAMOTO, Kenji KUTARA, Yoichi INOUE, Keiichi HISAEDA, Yasunori SHINOZUKA, Ken NAKADA, JARQ:Japan Agricultural Research Quarterly. 59(4) , 321-326 (2025-10-01)
jarq59-4_321-326.pdf681.88 KB
The Molecular Basis for the Functional Properties of the C-Terminal Half of Lactoferrin
Yoshiharu TAKAYAMA, Reiji AOKI, JARQ:Japan Agricultural Research Quarterly. 59(3) , 197-202 (2025-07-01)
jarq59-3_197-202.pdf1.61 MB
Characteristics of Suspended Particulate Matter, Benthic Environmental Factors, and Their Relationship to Bivalves
Albert Valdish MANUEL, Kazumasa HASHIMOTO, Takeo KURIHARA, JARQ:Japan Agricultural Research Quarterly. 59(3) , 203-217 (2025-07-01)
jarq59-3_203-217.pdf995.01 KB
Detailed Analysis of Scent Emissions in Potted Carnations Using Dianthus caryophyllus ‘HINAARARE’
Kyutaro KISHIMOTO, Kenichi SHIBUYA, Masafumi YAGI, Hiroyasu YAMAGUCHI, JARQ:Japan Agricultural Research Quarterly. 59(3) , 219-226 (2025-07-01)
jarq59-3_219-226.pdf1.67 MB
Development of Chromosome Observation Methods in Acerola (Malpighia glabra L.)
Masashi YAMAMOTO, JARQ:Japan Agricultural Research Quarterly. 59(3) , 227-231 (2025-07-01)
jarq59-3_227-231.pdf2.85 MB
Corrigendum: “Dietary Fat-Dependent Changes of Gene Expression in Rat Adipose Tissue” by Takahashi and Ide, JARQ 35:31-38
, JARQ:Japan Agricultural Research Quarterly. 59(3) , 233-233 (2025-07-01)
jarq59-3_233-233.pdf505.77 KB
High-Yielding Rice Production through Ratooning in Southwestern Japan
Hiroshi NAKANO, JARQ:Japan Agricultural Research Quarterly. 59(2) , 89-99 (2025-04-01)
jarq59-2_89-99.pdf832.95 KB
Evaluation Methods for the Assist Suit and Agricultural Applications
Masahiro TANAKA, Xiaohan XIANG, JARQ:Japan Agricultural Research Quarterly. 59(2) , 101-118 (2025-04-01)
jarq59-2_101-118.pdf1.58 MB
Bismuth Affects ROS Concentration and Cell Cycle in Arabidopsis thaliana
Takeshi NAGATA, JARQ:Japan Agricultural Research Quarterly. 59(2) , 119-128 (2025-04-01)
jarq59-2_119-128.pdf1.64 MB
Performance Evaluation of YOLOv5 for Object Detection in Agricultural Implement Changeover
Van Nang NGUYEN, Wonjae CHO, Kei TANAKA, JARQ:Japan Agricultural Research Quarterly. 59(2) , 129-138 (2025-04-01)
jarq59-2_129-138.pdf5.52 MB
Consumer Evaluation of Green Foods in China: An Approach from Text Mining and Random Forest on Online Consumer Reviews
Yili YANG, Shinsaku NAKAJIMA, JARQ:Japan Agricultural Research Quarterly. 59(2) , 139-153 (2025-04-01)
jarq59-2_139-153.pdf2.95 MB
Effects of Limosilactobacillus reuteri Strain 164 on Intestinal Gene Expression and Colon Inflammation: Potential as a Probiotic Strain
Reiji AOKI, Naoko MORIYA, Tadashi TAKINO, Hiromi KIMOTO-NIRA, JARQ:Japan Agricultural Research Quarterly. 59(2) , 155-162 (2025-04-01)
jarq59-2_155-162.pdf908.72 KB
Effects of Two-Stage Thinning of Coppices on Growth and Stem Conditions in a Clear-Cut Teak (Tectona grandis L.) Plantation in Thailand
Iwao NODA, Woraphun HIMMAPAN, Naoyuki FURUYA, JARQ:Japan Agricultural Research Quarterly. 59(2) , 163-174 (2025-04-01)
jarq59-2_163-174.pdf3.4 MB
Socioeconomic Factors Influencing Forest Area Changes in China: Regional Panel Autoregressive Distributed Lag Modeling Approach
Jiaze TAN, Satoshi TACHIBANA, JARQ:Japan Agricultural Research Quarterly. 59(2) , 175-186 (2025-04-01)
jarq59-2_175-186.pdf1.48 MB
Characteristics of Coco Peat as a Bulking Agent for Dairy Cow Manure Composting
Yoichiro KOJIMA, Koichi AMAHA, Ryoh NAKAKUBO, Mitsuyoshi ISHIDA, Yasuhiko NISHIJIMA, JARQ:Japan Agricultural Research Quarterly. 59(2) , 187-196 (2025-04-01)
jarq59-2_187-196.pdf1.12 MB
Stabilization of Yield and Quality of Winter Wheat for Bread in Sand Dune Fields in Niigata Prefecture in Japan
Yumi SHIMAZAKI, Hiroshi SHIBUKAWA, JARQ:Japan Agricultural Research Quarterly. 59(1) , 1-7 (2025-01-01)
jarq59-1_1-7.pdf1.15 MB
Advanced Operation and Social Acceptability of Robotic Agricultural Machinery for Ultra-Labor-Saving Smart Production
Mitsuru HACHIYA, JARQ:Japan Agricultural Research Quarterly. 59(1) , 9-15 (2025-01-01)
jarq59-1_9-15.pdf6.81 MB
Culture Models to Investigate Lactation and Mastitis in Bovine Mammary Epithelial Cells
Yusaku TSUGAMI, Yuya NAGASAWA, Ken KOBAYASHI, JARQ:Japan Agricultural Research Quarterly. 59(1) , 17-25 (2025-01-01)
jarq59-1_17-25.pdf2.17 MB
A Multiplex RT-PCR Assay for the Detection of Nine Virus Species Infecting Cucumber in Japan
Shuhei ADACHI-FUKUNAGA, Yasuhiro TOMITAKA, JARQ:Japan Agricultural Research Quarterly. 59(1) , 27-38 (2025-01-01)
jarq59-1_27-38.pdf1.88 MB
Impacts of Inflow Loadings from Heavy Rainfall on Cyanobacteria Overgrowth in Nitrogen-Limited Reservoirs through Field Observation and Numerical Simulation
Tran Thi Lan HUONG, Toshinori TABATA, Masayoshi HARADA, Akinori OZAKI, Bui Quoc LAP, JARQ:Japan Agricultural Research Quarterly. 59(1) , 39-54 (2025-01-01)
jarq59-1_39-54.pdf6.28 MB
Quantitative Analysis of Bovine and Caprine Alpha-S1-Caseins in Milk by Liquid Chromatography/Tandem Mass Spectrometry
Katsunari IPPOUSHI, JARQ:Japan Agricultural Research Quarterly. 59(1) , 55-60 (2025-01-01)
jarq59-1_55-60.pdf949.52 KB