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.

JARQ Submission and Editorial Policy / All Issues

All Issue

Characteristics of Potato Starch: Phosphorus Content, Physicochemical Properties, and Digestibility

Takahiro NODA, JARQ:Japan Agricultural Research Quarterly. 60(3) , 205-213 (2026-07-01)

jarq60-3_205-213.pdf1.17 MB

A Hypovirulent Strain of Calonectria ilicicola for Biological Control of Soybean Red Crown Rot

Mitsunori TAKANASHI, Michie KOBAYASHI, Chang-Jie JIANG, JARQ:Japan Agricultural Research Quarterly. 60(3) , 215-222 (2026-07-01)

jarq60-3_215-222.pdf1.7 MB

Measurement of Soil Matric Potential using a Simple Soil Moisture Meter

Mari TAKEUCHI, Yoshitaka KUROSE, JARQ:Japan Agricultural Research Quarterly. 60(3) , 223-229 (2026-07-01)

jarq60-3_223-229.pdf1.48 MB

Evaluation of Unmanned Aerial Vehicle-Based Structure- from-Motion (UAV-SfM)-Derived Plant Height for Yield Estimation and Individual Selection in Cool-Season Grass Breeding

Miyu MAKISHIMA, Motohiro YOSHIMURA, Ryo FUJIWARA, Yasuharu SANADA, Yoshinori TAKAHARA, Yukio AKIYAMA, JARQ:Japan Agricultural Research Quarterly. 60(3) , 231-239 (2026-07-01)

jarq60-3_231-239.pdf2.26 MB

Estimation of Chlorophyll and Carotenoid Content in Tea Leaves Using UAV Hyperspectral Data with the PROSPECT- D+SAIL Model

Yuta TSUCHIYA, Yuhei HIRONO, Haruyuki SEKI, Rei SONOBE, JARQ:Japan Agricultural Research Quarterly. 60(3) , 241-249 (2026-07-01)

jarq60-3_241-249.pdf1.94 MB

Exploring Food Values and Consumer Preferences for Mung Beans in Urban China: A Best-Worst Scaling Approach

Xin Yuan ZHANG, Tomoo HIGUCHI, JARQ:Japan Agricultural Research Quarterly. 60(3) , 251-259 (2026-07-01)

jarq60-3_251-259.pdf1.57 MB

Impact of Indian Rice Export Restrictions on Global Indica and Japonica Rice Markets and Food Security

Tatsuji KOIZUMI, Gen FURUHASHI, Takuji KUSANO, JARQ:Japan Agricultural Research Quarterly. 60(3) , 261-271 (2026-07-01)

jarq60-3_261-271.pdf959.75 KB

Comparative Evaluation of Phytophthora Blight Resistance in Helleborus Cultivars

Lifeng LONG, Thiara Celine SUAREZ, Takashi NAKATSUKA, Kunio YAMADA, Masaki OCHIAI, JARQ:Japan Agricultural Research Quarterly. 60(3) , 273-281 (2026-07-01)

jarq60-3_273-281.pdf7.54 MB

Giant Cell-rich Extraskeletal Osteosarcoma in the Maxillary Region of a Saanen Goat: A Case Report

Ai NITTA, Tomomi TANAKA, Miki KIMURA, Seiya SHIMIZU, Masafumi OCHII, Juho MUKAI, Susumu IWAIDE, Tomoyuki SHIBAHARA, JARQ:Japan Agricultural Research Quarterly. 60(3) , 283-288 (2026-07-01)

jarq60-3_283-288.pdf5.42 MB

Moderate Crude Protein Supply and Rumen-Protected Amino Acid Supplementation Enable High-Quality Beef Production and Reduce Nitrogen Excretion in Japanese Black Steers

Mitsuru KAMIYA, Miwa NAKANO, Karin AKADA, Mikito HIGUCHI, JARQ:Japan Agricultural Research Quarterly. 60(3) , 289-298 (2026-07-01)

jarq60-3_289-298.pdf909.11 KB

Improved Mechanization Efficiency in Grain Maize Cultivation Employing a Crop Rotation System in Upland Fields Converted from Paddy Fields

Yoshiya SHINOTO, Genta KANAI, Hirotake MIYAJI, Kazuya KODA, JARQ:Japan Agricultural Research Quarterly. 60(2) , 111-119 (2026-04-01)

jarq60-2_111-119.pdf2.8 MB

Research on Ground Rolling with Delayed Apical Development to Prevent Frost Injury in Autumn-Sown Spring Wheat

Akina MIZUMOTO, Tetsushi AZUMA, JARQ:Japan Agricultural Research Quarterly. 60(2) , 121-125 (2026-04-01)

jarq60-2_121-125.pdf747.71 KB

Current Status and Prospects for Perennial Crop Breeding

Mizusa KATSUTA, Kenjiro KATSU, Tatsuro SUZUKI, JARQ:Japan Agricultural Research Quarterly. 60(2) , 127-136 (2026-04-01)

jarq60-2_127-136.pdf996.16 KB

Development of Remote-Controlled High-Efficiency Mower for Steep Slopes

Jun AOKI, Kazunobu HAYASHI, Takuo KOKURYU, Etsuo KIJIMA, Syuichi SANO, Yoshihito WATANABE, Koji EGAWA, JARQ:Japan Agricultural Research Quarterly. 60(2) , 137-145 (2026-04-01)

jarq60-2_137-145.pdf5.43 MB

Inter-Field Wheat Yield Variation Evaluated Using Time Series Satellite Imagery and Functional Data Analysis

Shuhei YAMAMOTO, Katashi KUBO, Shigeto FUJIMURA, Hirotake MIYAJI, JARQ:Japan Agricultural Research Quarterly. 60(2) , 147-156 (2026-04-01)

jarq60-2_147-156.pdf3.01 MB

Effects of Applying Bagasse-Based Spent Mushroom Substrate on Early Growth of Sugarcane and Reduction of Environmental Impact

Takashi KANDA, Yoshifumi TERAJIMA, Kenji TAMURA, Hiroko NAKATSUKA, Satoshi NAKAMURA, JARQ:Japan Agricultural Research Quarterly. 60(2) , 157-166 (2026-04-01)

jarq60-2_157-166.pdf983.36 KB

Characterization of Candidate Lactic Acid Bacteria with Dual Application for Biopreservation and Probiotics

Hirotoshi SUSHIDA, Hiromi KIMOTO-NIRA, JARQ:Japan Agricultural Research Quarterly. 60(2) , 167-174 (2026-04-01)

jarq60-2_167-174.pdf819.44 KB

Has Economic Growth Mitigated Natural Disaster Damage in Vietnam? A Hybrid Approach to Panel Data Analysis

Tetsuya MICHINAKA, Makoto EHARA, Tan Phuong VU, Thuy My Linh NGUYEN, Takashi OKAMOTO, Katsuto SHIMIZU, Takeshi TOMA, Van Tiep HA, Van Tuan VU, JARQ:Japan Agricultural Research Quarterly. 60(2) , 175-186 (2026-04-01)

jarq60-2_175-186.pdf1.5 MB

Histopathological Analysis of Surviving Mallards Infected with H5 Subtype Clade 2.3.4.4b High Pathogenicity Avian Influenza Viruses

Hayate NISHIURA, Saki SAKUMA, Junki MINE, Asuka KUMAGAI, Kohtaro MIYAZAWA, JARQ:Japan Agricultural Research Quarterly. 60(2) , 187-193 (2026-04-01)

jarq60-2_187-193.pdf4.95 MB

Analysis of Genetic Variation, Agronomic Traits, and Nitrate- Nitrogen in Landraces and Commercial Sudangrass (Sorghum sudanense (Piper) Stapf) under Varying Levels of Cattle Compost Application

Atsushi KIYOSAWA, Tahei KAWACHI, Jun-ichi YONEMARU, Hiroyuki KAWAHIGASHI, JARQ:Japan Agricultural Research Quarterly. 60(2) , 195-203 (2026-04-01)

jarq60-2_195-203.pdf987.89 KB

Development of Quattro-TK5, a New, Snow-Endurant, Early-Heading Italian Ryegrass Cultivar

Akito KUBOTA, JARQ:Japan Agricultural Research Quarterly. 60(1) , 1-5 (2026-01-09)

jarq60-1_1-5.pdf913.26 KB

Growth Rate, Weed Competitiveness, and Deepwater Avoidance of a New Type of Rice Line, Monster Rice 2

Marina IWASA, Shunsuke ADACHI, Tetsuya NAKAMURA, Keisuke KATSURA, Takashi MOTOBAYASHI, Taiichiro OOKAWA, JARQ:Japan Agricultural Research Quarterly. 60(1) , 7-18 (2026-01-09)

jarq60-1_7-18.pdf2.81 MB

Mineralogical and Chemical Properties of Low-Grade African Phosphate Rocks for Agricultural Applications

Toshio IMAI, Takashi KANDA, Jacques SAWADOGO, Fujio NAGUMO, Satoshi NAKAMURA, JARQ:Japan Agricultural Research Quarterly. 60(1) , 19-32 (2026-01-09)

jarq60-1_19-32.pdf1.28 MB

Rearing the Rice Stink Bug, Niphe elongata (Hemiptera: Pentatomidae), on Mixed Grains of Brown Rice, Wheat, and Foxtail Millet

Takahiro SETOGUCHI, Takuya SHIBA, JARQ:Japan Agricultural Research Quarterly. 60(1) , 33-38 (2026-01-09)

jarq60-1_33-38.pdf906.62 KB

Development of Species-Specific Primers for Detecting Raccoon (Procyon lotor) eDNA from Field Water

Hiroyoshi KOYAMA, Chinatsu KOZAKAI, Hiroki MATSUMURA, Hiroyuki SHIBAIKE, JARQ:Japan Agricultural Research Quarterly. 60(1) , 39-48 (2026-01-09)

jarq60-1_39-48.pdf3.27 MB

Comparing Symptoms and Virus Accumulation of Three Tobamoviruses in Cucurbitaceae Hosts

Kenji KUBOTA, Yosuke MATSUSHITA, JARQ:Japan Agricultural Research Quarterly. 60(1) , 49-59 (2026-01-09)

jarq60-1_49-59.pdf1.53 MB

Calculating Fuel Efficiency for Head-Feeding Combine Harvesters

Hirofumi YAMASAKI, Mitsuhiro HORIO, JARQ:Japan Agricultural Research Quarterly. 60(1) , 61-72 (2026-01-09)

jarq60-1_61-72.pdf2.15 MB

Evaluation of Fat Characteristics of Water Buffalo Fattened on Napier Grass and Concentrate Feed in Comparison with Cattle in the Philippines

Tomomi BAN-TOKUDA, Momoka YAMAGUCHI, Madoka FUJII, Rosalina M. LAPITAN, Jesus Rommel V. HERRERA, Arnel N. del BARRIO, Thelma S. SALUDES, Makoto KONDO, Toshihiro NADE, Hiroki MATSUI, Tsutomu FUJIHARA, JARQ:Japan Agricultural Research Quarterly. 60(1) , 73-83 (2026-01-09)

jarq60-1_73-83.pdf1.39 MB