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
Investigation of Total Polyphenol Content, Antioxidant Activity, and Carbohydrate-hydrolyzing Enzyme Inhibition of Yacon Leaves among Four Domestic Cultivars and a Peru Line for over Four Years
Yuto UEDA, Yasushi MATSUDA, Tatsuro MURATA, Yoshikazu HOSHI, Kiyotaka KABATA, Masateru ONO, Hideki KINOSHITA, Keiji IGOSHI, Shin YASUDA, JARQ:Japan Agricultural Research Quarterly. 55(4) , 347-358 (2021-10-01)
jarq55-4_347-358.pdf766.91 KB
Comparison of Carotenoid Accumulation and Abscisic Acid Content in Fruit-color Altered Mutant and Original Types in Citrus
Naoko NAKAJIMA, Yoshinori IKOMA, Hikaru MATSUMOTO, Masaya KATO, Takeshi KUNIGA, JARQ:Japan Agricultural Research Quarterly. 55(4) , 359-366 (2021-10-01)
jarq55-4_359-366.pdf1.43 MB
Effects of Biochar on the Growth of Vachellia etbaica and Faidherbia albida Planted in Tigray, Northern Ethiopia
Masazumi KAYAMA, Buruh ABEBE, Emiru BIRHANE, JARQ:Japan Agricultural Research Quarterly. 55(4) , 367-378 (2021-10-01)
jarq55-4_367-378.pdf1.02 MB
Effects of Topography, Soil Organic Matter, and Chemical Properties on the Growth of Teak (Tectona Grandis) Plantations in Northeast Thailand
Iwao NODA, Woraphun HIMMAPAN, Tosporn VACHARANGKURA, Somsak SUKCHAN, Wilawan WICHIENNOPPARAT, Naoyuki FURUYA, JARQ:Japan Agricultural Research Quarterly. 55(4) , 379-390 (2021-10-01)
jarq55-4_379-390.pdf1.06 MB
Optimization Process of Plant Growth Environment for Improving Content Compounds Using Physiological and Genetic Information in a Closed-type Plant Factory
Yuki YONEDA, JARQ:Japan Agricultural Research Quarterly. 55(3) , 201-208 (2021-07-01)
jarq55-3_201-208.pdf1.12 MB
Factors Explaining Differences in Yield Response to High Nitrogen Fertilization among Rice Varieties under Tropical Highland Conditions in Central Kenya
Hiroaki SAMEJIMA, Keisuke KATSURA, Mayumi KIKUTA, Symon Mugo NJINJU, John Munji KIMANI, Akira YAMAUCHI, Daigo MAKIHARA, JARQ:Japan Agricultural Research Quarterly. 55(3) , 209-216 (2021-07-01)
jarq55-3_209-216.pdf800.44 KB
Climatic Factors Related to Low Rice (Oryza sativa L.) Yield in the Wet Season under Double Cropping in the Mekong Delta, Vietnam
Motohiko KONDO, Yoshiko IIZUMI, Takeshi WATANABE, Luu Hong MAN, Nguyen Kim THU, Vu Ngọc Minh TAM, Ho Nguyen Hoang PHUC, Nguyen Thi Ngọc HAN, Duong Hoang SON, Nguyen Huu CHIEM, JARQ:Japan Agricultural Research Quarterly. 55(3) , 217-224 (2021-07-01)
jarq55-3_217-224.pdf639.43 KB
Chemical and Microbiological Evaluation of Vermicompost Made from School Food Waste in Japan
Shumpei HASHIMOTO, Mai FURUYA, Xiaodong YOU, Genki WANIBUCHI, Hayato TOKUMOTO, Motoaki TOJO, Kumpei SHIRAGAKI, JARQ:Japan Agricultural Research Quarterly. 55(3) , 225-232 (2021-07-01)
jarq55-3_225-232.pdf1011.53 KB
Nitrogen Mineralization from Flowering- and Maturity-stage Green Manures under Flooded Conditions after Different Upland Periods
Kyi Mon Mon KO, Yasumaru HIRAI, Takeo YAMAKAWA, Eiji INOUE, Takashi OKAYASU, Muneshi MITSUOKA, JARQ:Japan Agricultural Research Quarterly. 55(3) , 233-244 (2021-07-01)
jarq55-3_233-244.pdf1.27 MB
Designing a Polyurethane-based Husker Roll for Long-grain Rice Using a Finite Element Model
Tadashi YOSHIHASHI, Yuki ABE, Nariaki IWASAKI, Hiroyuki SAKANAKA, Masatoshi FUJINAKA, Ryuichi KIDO, JARQ:Japan Agricultural Research Quarterly. 55(3) , 245-251 (2021-07-01)
jarq55-3_245-251.pdf877.57 KB
Basic Quality Management for Improving the Business Stability of Small Food Enterprises in Southeast Asia: The Case of a Fermented Rice Noodle Company in Thailand Preventing Noodle Liquefaction
Eiichi KUSANO, Junichiro MARUI, Tadashi YOSHIHASHI, JARQ:Japan Agricultural Research Quarterly. 55(3) , 253-264 (2021-07-01)
jarq55-3_253-264.pdf782.49 KB
Effect of Saccharomyces cerevisiae Fermentation Product on Ruminal Fermentation, Blood Metabolites, and Milk Production in Dairy Cows
Naoto AOKI, Zhang YANLI, Syuhei KANDA, Yuzo KUROKAWA, Halima SULTANA, Hisao ITABASHI, JARQ:Japan Agricultural Research Quarterly. 55(3) , 265-271 (2021-07-01)
jarq55-3_265-271.pdf569 KB
Effect of Leaves on the Regulation of Internode Elongation in a Tropical Evergreen Tree, Shorea leprosula
Masaki J. KOBAYASHI, Kevin Kit Siong NG, Soon Leong LEE, Norwati MUHAMMAD, Naoki TANI, JARQ:Japan Agricultural Research Quarterly. 55(3) , 273-283 (2021-07-01)
jarq55-3_273-283.pdf1.56 MB
Dry Direct-seeding Rice Cultivation Method Incorporating a Water-leakage Prevention Process Using a Vibratory Roller
Keiko NAKANO, Koichiro FUKAMI, Hideki OHDAN, JARQ:Japan Agricultural Research Quarterly. 55(2) , 107-116 (2021-04-01)
jarq55-2_107-116.pdf3.09 MB
Development of Cooling Techniques for Small-scale Protected Horticulture in Mountainous Areas in Japan
Ryosuke YAMANAKA, Hiroki KAWASHIMA, JARQ:Japan Agricultural Research Quarterly. 55(2) , 117-125 (2021-04-01)
jarq55-2_117-125.pdf6.95 MB
Relationship between Resistance to Rice necrosis mosaic virus and the Expression Levels of Rice RNA-dependent RNA polymerase 6 (OsRDR6) in Various Rice Cultivars
Sopan G. WAGH, Abhijit A. DASPUTE, Shamim Md. AKHTER, Sachin A. BHOR, Kappei KOBAYASHI, Takashi YAENO, Masamichi NISHIGUCHI, JARQ:Japan Agricultural Research Quarterly. 55(2) , 127-135 (2021-04-01)
jarq55-2_127-135.pdf1.05 MB
Analysis of Salinity Behavior in Hakata Bay after Heavy Rainfall Using a Three-dimensional σ-Coordinate Model
Akihiro FUKUDA, Toshinori TABATA, Kazuaki HIRAMATSU, Masayoshi HARADA, JARQ:Japan Agricultural Research Quarterly. 55(2) , 137-146 (2021-04-01)
jarq55-2_137-146.pdf1.37 MB
Flood Hazard Assessment of Residential Areas Outside the Protected Area of the Red River Dike System in Hanoi, Vietnam
Sai Hong ANH, Toshinori TABATA, Kazuaki HIRAMATSU, Masayoshi HARADA, JARQ:Japan Agricultural Research Quarterly. 55(2) , 147-160 (2021-04-01)
jarq55-2_147-160.pdf4.69 MB
Impact of Public Agricultural Investments on Global Indica and Japonica Rice Markets under Climate Change
Tatsuji KOIZUMI, Gen FURUHASHI, JARQ:Japan Agricultural Research Quarterly. 55(2) , 161-175 (2021-04-01)
jarq55-2_161-175.pdf276.42 KB
Long-term Hydrological Observations in a Lowland Dry Evergreen Forest Catchment Area of the Lower Mekong River, Cambodia
Naoki KABEYA, Akira SHIMIZU, Takanori SHIMIZU, Shin’ichi IIDA, Koji TAMAI, Asako MIYAMOTO, Sophal CHANN, Makoto ARAKI, Yasuhiro OHNUKI, JARQ:Japan Agricultural Research Quarterly. 55(2) , 177-190 (2021-04-01)
jarq55-2_177-190.pdf2.47 MB
Growth Performance and Condition Factor of Juvenile Milkfish (Chanos chanos) Cultured in a Marine Pen in Relation to Body Size and Temperature
Masashi KODAMA, Rose Ann DIAMANTE, Nerissa D. SALAYO, Raisa Joy G. CASTEL, Joemel G. SUMBING, JARQ:Japan Agricultural Research Quarterly. 55(2) , 191-200 (2021-04-01)
jarq55-2_191-200.pdf853.29 KB
The Farm-type TMR Center as a Regional Farming System in Hokkaido
Makoto HIMI, JARQ:Japan Agricultural Research Quarterly. 55(1) , 1-4 (2021-01-01)
jarq55-1_1-4.pdf546.79 KB
Radioactive Cesium Concentration in Silage Corn (Zea Mays L.) and Italian Ryegrass (Lolium Multiflorum Lam.) Cultivated with Three Different Tillage Methods after the Fukushima Daiichi Nuclear Power Plant Accident
Tsutomu KANNO, Hisatomi HARADA, Koichi AMAHA, Yoshiyuki ABE, Noritoshi SUMIDA, Hidehiko INOUE, Yoichiro KOJIMA, Soichiro MORITA, Toshihiko IBUKI, Setsuro SATO, JARQ:Japan Agricultural Research Quarterly. 55(1) , 5-16 (2021-01-01)
jarq55-1_5-16.pdf776.23 KB
Nitrous Oxide Emissions from a Sugarcane Field with Green Manure and Chemical Fertilizer Applications in Okinawa, Japan
Tabito MAEDA, Soh SUGIHARA, Tomohiro NISHIGAKI, Naoko MIYAMARU, Koichi YOSHIDA, Akinori YAMAMOTO, Koki TOYOTA, Haruo TANAKA, JARQ:Japan Agricultural Research Quarterly. 55(1) , 17-27 (2021-01-01)
jarq55-1_17-27.pdf845.13 KB
Development of Rapid Immunofilter Paper Assay for Chrysanthemum Stem Necrosis Orthotospovirus using Polyclonal Antibody Generated in Rabbits
Yasuhiro TOMITAKA, JARQ:Japan Agricultural Research Quarterly. 55(1) , 29-33 (2021-01-01)
jarq55-1_29-33.pdf799.42 KB
Applicability of Water Level Monitoring System and Water Level Estimation System to Tank Cascade in Sri Lanka
Akira IZUMI, Toshikazu HORI, JARQ:Japan Agricultural Research Quarterly. 55(1) , 35-43 (2021-01-01)
jarq55-1_35-43.pdf3.69 MB
Recurrent Neural Network Predictions for Water Levels at Drainage Pumping Stations in an Agricultural Lowland
Nobuaki KIMURA, Ikuo YOSHINAGA, Kenji SEKIJIMA, Issaku AZECHI, Hirohide KIRI, Daichi BABA, JARQ:Japan Agricultural Research Quarterly. 55(1) , 45-58 (2021-01-01)
jarq55-1_45-58.pdf5.52 MB
Soybean Rust and Resistant Cultivar Effects on Global Soybean Supply and Demand
Yuki ISHIKAWA-ISHIWATA, Jun FURUYA, JARQ:Japan Agricultural Research Quarterly. 55(1) , 59-67 (2021-01-01)
jarq55-1_59-67.pdf1.13 MB
Comparative Analysis of Rumen Bacteria between Water Buffalo and Cattle Fed the Same Diet during their Fattening Period in the Philippines
Ken ASAI, Khin Ohnmar LWIN, Abraham G. TANDANG, Rosalina M. LAPITAN, Jesus Rommel V. HERRERA, Arnel N. DEL-BARRIO, Makoto KONDO, Tomomi BAN-TOKUDA, Arfan ABRAR, Tsutomu FUJIHARA, Hiroki MATSUI, JARQ:Japan Agricultural Research Quarterly. 55(1) , 69-75 (2021-01-01)
jarq55-1_69-75.pdf670.02 KB
The Effects of Chronic Social Defeat Stress on Solid Gastric Emptying and Defecation in C57BL/6J Mice
Naoko MORIYA, Naoko YAMAGISHI, Tatsuhiko GOTO, Hikari OTABI, Hiromi NIRA-KIMOTO, Atsushi TOYODA, Chise SUZUKI, JARQ:Japan Agricultural Research Quarterly. 55(1) , 77-83 (2021-01-01)
jarq55-1_77-83.pdf656.74 KB