International Symposium on Long-Term Monitoring and Investigation of Rice Paddy and Forest Ecosystems for Plant and Soil Responses to Climate Change (August 25-29, 2025)

(Poster) (2025 symposium guidance by past photos)
International Symposium on Organic Rice Farming in East and Southeast Asian Countries: Techniques and Effects (March 2-4, 2023)
(Poster and Program.pdf) (SSPN-ORF special section)

International Online Symposium on Soil C and N Dynamics by Land Use, Management and Climate Change (September 28-30, 2020)
(Program.pdf) ( Soil C, N, and CLUMCspecial section)

International Symposium on C and N Dynamics by Land Use and Management Changes in East and Southeast Asian Countries (September 10-12, 2018)
(Program.pdf) (Soil C and N by LUMC special section)

スタートアップセミナー　
植物機能開発概論（１４）
生物資源の利用と私たちのくらし　（１）、（２）、（３）
基礎土壌学　（１）、（２）、（３）
土壌生物資源学へのリンク
コース実験（土壌学）sheet　（１）、（２）、（３）、（４)、 Minitest
連大授業（UGAS-IU lecture）

Dr. Weiguo Cheng
Professor of Soil Science

        日本語のホームページ                                                                                                                

Contact information:

Faculty of Agriculture,Yamagata University

1-23, Wakaba-cho, Tsuruoka, Yamagata,
997-8555 Japan

Tel: (81) 235-28-2824; Fax: (81) 235-28-2820.

E-mail address: cheng@tds1.tr.yamagata-u.ac.jp

Homepage: https://www.tr.yamagata-u.ac.jp/~cheng/

Education:

B.S., Agricultural Microbiology, Huazhong Agricultural University, China, 1986

Ph.D. Soil and Environmental Science, Chiba University, Japan. 2000

　

Research Positions:

1986.7-1996.9: Anhui Academy of Agri-Sciences, Hefei, Anhui, China

2000.4- 2010.3: National Institute for Agro-Environmental Sciences, Tsukuba, Japan.

(2005, 9 - 2006, 6: Florida International University, Miami, USA)
2010.3-: Faculty of Agriculture,Yamagata University, Tsuruoka, Yamagata,Japan.

　

Research interests:

Carbon and nitrogen dynamics in different terrestrial ecosystems; Greenhouse gas emissions; Effect of elevated CO2 and global warming on rice ecosystems (plants, water and soil); Stable isotopes probing on biogeochemical processes;  Compost.

　

Publications after 2010: (the others)

1.        Cheng, W. (2025) Preface to the special section “Research frontiers on organic rice farming from the Soil Science and Plant Nutrition perspectives (SSPN-ORF) Preface to the special section”. Soil Science and Plant Nutrition, 71: xxx–xxx. https://doi.org/10.1080/00380768.2025.2491191 (online Apr. 11, 2025)

2.        Sato, T., Sato, T., Saito, M., Suzuki, T., Fukunaga, A., Cheng, W., Tawaraya, K. (2025). Nursery inoculation with arbuscular mycorrhizal fungi improves yield of Allium fistulosum during a 3-year field trial. Soil Science and Plant Nutrition, 71, xxx–xxx. https://doi.org/10.1080/00380768.2025.2491693 (online Apr. 17, 2025)

3.        程 為国（2025）川瀬金次郎先生がなぜ近代日中土壌学交流の先駆者になったか、肥料科学46: 99–131. https://doi.org/10.57411/fertilizerscience.46.0_99

4.        Maimunah, M. A., Kautsar, V., Kimani, S.M., Sekishita, M., Hosogoe, Y., Takami, S., Tang, S., Tawaraya, K., Murayama, H., *Cheng, W. (2025) Mechanical weeding frequency enhanced rice growth by competing with weeds for N absorption in an organic field in northeastern Japan. Soil Science and Plant Nutrition, 71, xxx–xxx. https://doi.org/10.1080/00380768.2025.2482941 (online Mar. 30, 2025)

5.        Kimani, S.M., Sekishita, M., Hosogoe, Y., Kautsar, V., Tawaraya, K., Tokida, T., *Cheng, W. (2025) Successive incorporation of Azolla (A. filiculoides Lam.) as green manure increases rice yield in lowland paddy soil. Soil Science and Plant Nutrition, 71, xxx–xxx. https://doi.org/10.1080/00380768.2025.2477127 (online Mar. 10, 2025)

6.        Nkurunziza, C., Dukuzumuremyi, J.Y., Tang, S., Maimunah, M.A., Sudo, S., Tawaraya, K., Horiguchi, K., Wu, Y., *Cheng, W. (2025) Changes in carbon and nitrogen contents and greenhouse gas emissions during the vermicomposting of rice straw amended with Azolla. Soil Science and Plant Nutrition, 71, xxx–xxx. https://doi.org/10.1080/00380768.2025. 2490651 (online Apr. 14, 2025)

7.        Dukuzumuremyi, J.Y., *Cheng, W., Nakamura, H., Yabe, M., Musabiyisoni, A., Nkurunziza, C., Maimunah, M.A., Dyati, A.A., Tang, S., Sasaki, Y., Murayama, H. (2025) Two-year comparison of nitrogen uptake and yield in ‘Takanari’ and ‘Koshihikari’ rice grown under organic field conditions in Shonai region, Northeast Japan. Journal of Agricultural Meteorology, 81, xx‑xx. (Accepted Feb. 17, 2025)

8.        Kong, Y., Gong, S., Zhu, L., Wu, H., Duan, K., Cheng, W., Khoroshaev, D., *Lai, Y., *Xu, X. (2025) Dynamics of soil N2O and CO2 emissions in response to freeze-thaw intensity and moisture variations: A laboratory experiment. Forests, 16, 380. https://doi.org/10.3390/f16030380

9.        Tang, S., Xu, X., Wu, Y., Meng, L., Tawaraya, K., *Cheng, W. (2025) Long-term afforestation of black pine over two centuries asymptotically enhanced SOC and TN stocks in a typical coastal sand dune of Japan. Catena, 249, 108697.   https://doi.org/10.1016/j.catena.2024.108697

10.    Nozoe, T., Miura, S., Tazawa, J., Uchino, A., *Cheng, W. (2025) Weed control by application of fresh organic materials to paddy soil in organic rice production. Soil Science and Plant Nutrition, 71, xxx–xxx. https://doi.org/10.1080/00380768.2024.2443162 (online Dec. 19, 2024)

11.    Tang, S., Wu, Y., Meng, L., Hidemitsu Sakai, H., Hasegawa, T., Xingkai Xu, X., *Cheng, W. (2024) Three-year elevated CO2 does not enhance SOC content but accelerates C turnover in a single rice paddy soil evidenced by natural 13C tracing method. Science of the Total Environment, 957, 177605. https://doi.org/10.1016/j.scitotenv.2024.177605

12.    程 為国 (2024) 温度上昇とCO2増加が水田の植物・土壌・メタン放出に及ぼす影響の解明、生物と気象、24 , 52-55. https://agrmet.jp/wp-content/uploads/2024-F-3.pdf

13.    程 為国・内田義崇・野副卓人・石黒宗秀・鳥山和伸・上野秀人・当真 要（2024）有機稲作栽培の拡大に向けて 土壌肥料学からニューアプローチ、日本土壌肥料学雑誌 95(6): 410-416. https://doi.org/10.20710/dojo.95.6_410　

14.    Hao, R., Wu., Y., Di, H., Chen, Y., Cheng, W., Hu, R., Tan, W. (2024) Elucidating the role of earthworms on the fate of fertilizer N with synthetic and organic fertilizer application. Geoderma, 452, 117106. https://doi.org/10.1016/j.geoderma.2024.117106

15.    Wu, C., Huang, W., Liu, Y., Li, H., Ding, S., Zhu, Z., Wang, F., Dijkstra, F.A., Zhang, G., Kuzyakov, Y., Cheng, W., Xiao, M., Ge, T. (2024) Physicochemically protected organic carbon release is the rate-limiting step of rhizosphere priming in paddy soils. Science of the Total Environment, 955, 176859. https://doi.org/10.1016/j.scitotenv.2024.176859

16.    Dukuzumuremyi, J.Y., Kimani, S.M., *Cheng, W., Nkurunziza, C., Maimunah, M.A., Tang, S., Sasaki, Y., Murayama, H. (2024) Indica rice “Takanari” exhibited superiority to Japanese rice “Koshihikari” on N-uptake and biomass production under no-weeding practice. Soil Science and Plant Nutrition, 70, 336–344. https://doi.org/10.1080/00380768.2024.2399712

17.    Jin, L., Hua, K.K, Zhan, L.C., He, C., Wang, D.Z., Nagano, H., Cheng, W.G., Inubushi, K., Guo, Z.B. (2024) Effect of soil acidification on temperature sensitivity of soil respiration. Agronomy, 14, 1056. https://doi.org/10.3390/agronomy14051056

18.    Pia, H.I., Baek, N., Park, S.W., Shin, E.S., Lee, S.I., Kim, H.Y., Tang, S., Cheng, W., Kwak, J.H., Park, H.J., Choi, W.J. (2024) Luxury application of biochar does not enhance rice yield and methane mitigation: a review and data analysis. Journal of Soils and Sediments, 24, 2652–2668. https://doi.org/10.1007/s11368-024-03830-w

19.    Tang, S., *Cheng, W., Kimani, S.M., Tawaraya, K., Tokida, T., Yoshimoto, M., Sakai, H., Usui, Y., Nakamura, H., Matsushima, Y, M., Xu, X., Hasegawa, T. (2024) The effects of elevated CO2 and temperature on soil organic carbon and total nitrogen contents and mineralization in the 0 to 50 cm paddy soil layer were masked by different land use history. Soil Security, 16, 100147. https://doi.org/10.1016/j.soisec.2024.100147

20.    Dukuzumuremyi, J.Y., *Cheng, W., Kimani, S.M., Nkurunziza, C., Maimunah, M.A., Tang, S., Sasaki, Y., Murayama, H. (2024) Indica rice "Takanari" outcompetes japonica rice "Koshihikari" under low fertility conditions in soil developed on a sand dune. Soil Security, 16, 100144. https://doi.org/10.1016/j.soisec.2024.100144

21.    Tang, S., Liu, T., Hu, R., Xu, X., Wu, Y., Meng, L., Hattori, S., Tawaraya, K., *Cheng, W. (2024) Twelve-year conversion of rice paddy to wetland does not alter SOC content but decreases C decomposition and N mineralization in Japan. Journal of Environmental Management, 354, 120319. https://doi.org/10.1016/j.jenvman.2024.120319

22.    Dukuzumuremyi, J.Y., Kimani, S.M., *Cheng, W., Nkurunziza, C., Margi Asih Maimunah, M.A., Cantona, E., Tang, S., Sudo, S., Sasaki, Y., Murayama, H. (2024) No-weeding suppressed methane emissions by Takanari and Koshihikari rice varieties under organic farming. Journal of Agricultural Meteorology, 80, 12‑21. https://doi.org/10.2480/agrmet.D-23-00031

23.    Hosogoe, Y., Nguyen-Sy, T., *Tang, S., Bimantara, P.O., Sekikawa, Y., Kautsar, V., Kimani, S.M., Xu, X., Tawaraya, K., Cheng, W. (2024) Five-year vegetation conversion from pasture to C3 and C4 plants affects dynamics of SOC and TN and their natural stable C and N isotopes via mediating C input and N leaching. Science of the Total Environment, 912, 169481. https://doi.org/10.1016/j.scitotenv.2023.169481   

24.    Dewi, I.L., *Tang, S., Maimunah, M.A., Cantona, E., Dukuzumuremyia, J.Y., Nkurunziza, C., Utami, S.N.H., Hanudin, E., Hattori, S., Tawaraya, K., Cheng, W. (2024) Long-term conversion of upland to paddy increased SOC content and N availability in a sand dune of Japan. Catena, 234, 107603. https://doi.org/10.1016/j.catena.2023.107603

25.    Tantriani, Cheng, W., Oikawa, A., Tawaraya, K. (2023) Phosphorus deficiency alters root length, acid phosphatase activity, organic acids, and metabolites in root exudates of soybean cultivars. Physiologia Plantarum, 175, e14107. https://doi.org/10.1111/ppl.14107

26.    Tantriani, Cheng, W., Oikawa, A., Tawaraya, K. (2023) Low phosphorus tolerance mechanisms in soybean cultivars grown in soil. Journal of Soil Science and Plant Nutrition. 23, 6331-6344. https://doi.org/10.1007/s42729-023-01487-x

27.    De la Cruz, V.Y., Tantriani, Cheng, W., Tawaraya, K. (2023) Yield gap between organic and conventional farming systems across climate types and sub-types: A meta-analysis. Agricultural Systems, 211, 103732. https://doi.org/10.1016/j.agsy.2023.103732.

28.    Wu, Y., He, J., Liu, W., Cheng, W., Shaaban, M., Jiang Y. (2023) The effects of continuous straw returning strategies on SOC balance upon fresh straw incorporation. Environmental Research, 232, 116225. https://doi.org/10.1016/j.envres.2023.116225

29.    Xu, X.K., Wu, H.H., Yue, J., Tang, S.R., Cheng, W.G. (2023) Effects of snow cover on carbon dioxide emissions and their δ13C values of temperate forest soils with and without litter. Forests, 14, Article No. 1384. https://doi.org/10.3390/f14071384

30.    Azizah, F.N., Purwanto, B.H., Oikawa, A., Shinano, T., Cheng, W.G., Tawaraya, K. (2023) Detection of metabolites in rhizosphere of soybean under different status of soil potassium. Soil Science and Plant Nutrition, 69, 69-77. https://doi.org/10.1080/00380768.2023.2166775

31.    Honda, S., Yamazaki, Y., Mukada, T., Cheng, W.G., Chuba, M., Okazaki, Y., Saito, K., Oikawa, A., Maruyama, H., Wasaki, J., Wagatsuma, T., Tawaraya, K. (2023) Lipidome Profiling of Phosphorus Deficiency-Tolerant Rice Cultivars Reveals Remodeling of Membrane Lipids as a Mechanism of Low P Tolerance. Plants-Basel, 12, Article No. 1365. https://doi.org/10.3390/plants12061365

32.    Tantriani, Cheng, W., Tawaraya, K. (2023) Screening for low phosphorus-tolerant soybean cultivars from the Japanese core collection. Euphytica, 219, 13. https://doi.org/10.1007/s10681-022-03145-2

33.    Wei, L., Zhu, Z., Razavi, S.B., Xiao, M., Dorodnikov, M., Fan, L., Yuan, H., Yurtaev, A., Luo, Y., Cheng, W., Kuzyakov, Y., Wu, J., Ge, T. (2022) Visualization and quantification of carbon “rusty sink” by rice root iron plaque: mechanisms, functions, and global implications. Global Change Biology, 28: 6711–6727.  https://doi.org/10.1111/gcb.16372

34.    Kimani, S.M., Bimantara, P.O., Kautsar, V., Torita, R., Hattori, S., Tawaraya, K., Sudo. S., *Cheng, W. (2022) Influence of Azolla incorporation and/or dual cropping on CH4 and N2O emissions from a continuously flooded paddy field. Soil Science and Plant Nutrition, 68(2): 246–255. https://doi.org/10.1080/00380768.2022.2047580

35.    Maimunah, M. A., Kautsar, V., Bimantara, P.O., Kimani, S.M., Utami, A.I., Sabri, R.K., Tawaraya, K., Utami, S.N.H., Purwanto, B.H., Cheng, W., (2022) Weeding frequencies improve soil available nitrogen in organic paddy field. Planta Tropika Journal of Agro Science, 10(1): 45–54. https://doi.org/10.18196/pt.v10i1.12707 

36.    Cheng, W. (2022) Preface to the special section ‘Soil C and N response to climate, land-use and management changes (Soil C, N and CLUMC)’. Soil Science and Plant Nutrition, 68(1): 1–4. https://doi.org/10.1080/00380768.2022.2039985

37.    Bimantara, P.O., Kimani, S.M., Kautsar, V., Egashira, H., Kikuchi., S., Tawaraya, K., *Cheng, W. (2022) Seasonal changes in soil properties caused by slash and burn agriculture practice in Shonai area, northeast Japan. Soil Science and Plant Nutrition, 68(1): 81–87. https://doi.org/10.1080/00380768.2021.2015237

38.    Arthur, A., Acquaye, S., *Cheng, W., Dogbatse, J.A., Konlan, S., Domfeh, O., Quaye A.K. (2022) Soil carbon stocks and main nutrients dynamics under cocoa plantations of different ages. Soil Science and Plant Nutrition, 68(1): 99–103. https://doi.org/10.1080/00380768.2022.2029219.

39.    Kusumawardani, P.N.†, Bimantara, P.O.†, *Guigue, J., Haga, C., Sasaki, Y., Kautsar, V., Kimani, S.M., Nguyen-Sy, T., Tang, S., Purwanto, B.H., Utami, S.N.H., Tawaraya, K., Sugawara, K., *Cheng, W., (2022) Carbon and nitrogen dynamics as affected by land use and management change from original rice paddies to orchard, wetland, parking area and upland a mountain village located in Shonai region, Northeast Japan. Soil Science and Plant Nutrition, 68(1): 114–123. https://doi.org/10.1080/00380768.2021.2017235

40.    Tang, S., *Nguyen-Sy, T., *Cheng, W., Sato, C., Tawaraya, K., Shiono, H., Kumagai, K. (2022) Changes in the soil chemical properties in a rice paddy after long-term applications of fused magnesium phosphate and calcium silicate. Soil Science and Plant Nutrition, 68(1): 149–157. https://doi.org/10.1080/00380768.2021.2010025

41.    Kautsar, V.†, Tang, S.†, Kimani, S.M., Tawaraya, K., Wu, J., Toriyama K., Kobayashi, K., *Cheng, W. (2022) Carbon decomposition and nitrogen mineralization of foxtail and milk vetch incorporated into paddy soils for different durations of organic farming. Soil Science and Plant Nutrition, 68(1): 158–166. https://doi.org/10.1080/00380768.2021.2017235

42.    Sakai, H., Cheng, W., Chen, C.P., Hasegawa, T. (2022) Short-term high nighttime temperatures pose an emerging risk to rice grain failure. Agricultural and Forest Meteorology. 314: 108779. https://doi.org/10.1016/j.agrformet.2021.108779

43.    Tang, S., Yuan, P., Tawaraya, K., Tokida, T., Fukuoka, M., Yoshimoto, M., Sakai, H., Hasegawa, T., Xu, X., *Cheng, W. (2022) Winter nocturnal warming affects the freeze-thaw frequency, soil aggregate distribution, the contents and decomposability of C and N in paddy fields. Science of the Total Environment. 802: 149870. https://doi.org/10.1016/j.scitotenv.2021.149870

44.    陽 捷行・程 為国（2021）語源の散策と思索 －つち・土・土壌・土性・土質・土地－、日本土壌肥料学雑誌 92: 491-496. https://doi.org/10.20710/dojo.92.6_491

45.    Maimunah, M. A., *Kautsar, V., Bimantara, P.O., Kimani, S.M., Torita, R., Tawaraya, K., Murayama, H., Utami, S.N.H., Purwanto, B.H., *Cheng, W., (2021) Weeding frequencies decreased rice-weed competition and increase rice N uptake in organic paddy field. Agronomy. 11: 1904. https://doi.org/10.3390/agronomy11101904

46.    Lee, S.I., Park, H.J., Jeong, Y.J., Seo, B.S., Kwak, J.H., Yang, H.I., Xu, X., Tang, S., Cheng, W., Lim, S.S., Choi, W.J. (2021) Biochar-induced reduction of N2O emission from 1 East Asian soils under aerobic conditions: review and data analysis. Environmental Pollution. 291: 118154. https://doi.org/10.1016/j.envpol.2021.118154

47.    Nguyen, T.T., Sasaki, Y., Kakuda, K., Fujii, H., Cheng, W. (2021) On-farm assessment of the phosphorus balance of paddy soil fertilized with cow dung compost in mixed crop–livestock systems and with rice straw in conventional practice in Yamagata, Japan. Soil Science and Plant Nutrition. 67: 566–575. https://doi.org/10.1080/00380768.2021.1963638

48.    Kimani, S.M., Bimantara, P.O., Kautsar, V., Tawaraya, K., *Cheng, W. (2021) Poultry-litter biochar application in combination with chemical fertilizer and Azolla green manure improves rice grain yield, and nitrogen use efficiency in paddy soil. Biochar. 3: 591–602. https://doi.org/10.1007/s42773-021-00116-z

49.    Kurniawan, A.H., *Sato, S., *Cheng, W., Dewi, P.K., Kobayashi, K. (2021) Animal abundance and soil properties affected by long-term organic farming in rice paddies in a typical Japanese yatsuda landscape. Environmental Monitoring and Assessment, 193(Suppl 1): 273. https://doi.org/10.1007/s10661-020-08813-1

50.    Tang, S., *Cheng, W., Hu, R., Guigue, J., Hattori, S., Tawaraya, K., Tokida, T., Fukuoka, M., Yoshimoto, M., Sakai, H., Usui, Y., Xu, X., Hasegawa, T. (2021) Five-year soil warming changes soil C and N dynamics in a single rice paddy field in Japan. Science of the Total Environment, 756: 143845. https://doi.org/10.1016/j.scitotenv.2020.143845

51.    Wu, H., Xu, X., Fu, P., Cheng, W., Fu, C. (2021) Responses of soil WEOM quantity and quality to freeze-thaw and litter manipulation with contrasting soil water content: a laboratory experiment. Catena, 198: 105058. https://doi.org/10.1016/j.catena.2020.105058

52.    Sato, T., Niwa, R., Ezawa, T., Sato, S., Hirakawa, H., Yoshida, S., Cheng, W., Tawaraya, K. (2021) Tracking an introduced arbuscular mycorrhizal fungus in Allium fistulosum in a field condition with or without controlling indigenous fungi by soil fumigation as well as evaluation on plant phosphorus and growth. Journal of Soil Science and Plant Nutrition. 21: 2781–2790. https://doi.org/10.1007/s42729-021-00565-2

53.    Matsushima, C., Shenton, M., Kitahara, A., Wasaki, J., Oikawa, A., Cheng, W., Ikeo, K., Tawaraya, K. (2021) Multiple analysis of root exudates and microbiome in rice (Oryza sativa) under low P conditions. Archives of Microbiology. 203: 5599–5611. https://doi.org/10.1007/s00203-021-02539-5

54.    Maulana, A.F, Turjaman, M., Hashimoto, Y., Cheng, W., Tawaraya, K. (2021) Nitrogen and phosphorus concentrations in growth media affect the relationship between root endophytic fungi and host plant. Archives of Microbiology. 203: 2411–2418. https://doi.org/10.1007/s00203-021-02238-1

55.    Luthfiana, N., Inamura, N., Tantriani., Sato, T., Saito, K., Oikawa, A., Cheng, W., Tawaraya, K. (2021) Metabolite profiling of the hyphal exudates of Rhizophagus clarus and Rhizophagus irregularis under phosphorus deficiency. Mycorrhiza, 31: 403–412. https://doi.org/10.1007/s00572-020-01016-z

56.    Kimani, S.M., Bimantara, P.O., Hattori, S., Tawaraya, K., Sudo. S., Xu, X., *Cheng, W. (2020) Co-application of poultry-litter biochar with Azolla has synergistic effects on CH4 and N2O emissions from rice paddy soils. Heliyon, 6: e05042　https://doi.org/10.1016/j.heliyon.2020.e05042 (open access)

57.    Tantriani, Shinano, T., Cheng, W., Saito, K., Oikawa, A., Purwanto, B.H., Tawaraya, K. (2020) Metabolomic analysis of night-released soybean root exudates under high- and low-K conditions. Plant and Soil, 456: 259–276 https://doi.org/10.1007/s11104-020-04715-w　

58.    Kautsar, V., *Cheng, W., Tawaraya, K., Hattori, S., Susumu, Y., Kobayashi, K., Toriyama K. (2020) Air-drying and drying-rewetting effects in Japanese Andosols subjected to long-term organic rice farming. Soil Science and Plant Nutrition, 66: 714–723. https://doi.org/10.1080/00380768.2020.1816123　

59.    Wu, X., Nguyen-Sy, T., Sun, Z., Watanabe, T., Tawaraya, K., Hu, R., Cheng, W. (2020) Soil organic matter dynamics as affected by land use change from rice paddy to wetland. Wetlands, 40: 2199–2207. https://doi.org/10.1007/s13157-020-01321-5　

60.    Kimani, S.M., Kanno, T., Tawaraya, K., *Cheng, W. (2020) Floating Azolla cover influences evapotranspiration from flooded water surfaces. Wetlands, 40: 1425-1432. https://doi.org/10.1007/s13157-020-01282-9　

61.    Utami, A.I. †, Bimantara, P.O. †, Umemoto, R., Sabri, R.K., Kautsar, V., Tawaraya, K., Hanudin, E., *Cheng, W. (2020) Incorporation of winter grasses suppresses summer weed germination and affects inorganic nitrogen in flooded paddy soil. Soil Science and Plant Nutrition, 66:389-397. https://doi.org/10.1080/00380768.2020.1725914　

62.    Wu, H., Xu, X., Cheng, W., Lin, H. (2020) Dissolved organic matter and inorganic N jointly regulate greenhouse gases fluxes from forest soils with different moistures during a freeze-thaw period. Soil Science and Plant Nutrition, 66: 163-176. https://doi.org/10.1080/00380768.2019.1667212

63.    Kimani, S.M., Bimantara, P.O., Hattori, S., Tawaraya, K., Sudo. S. *Cheng, W., (2020) Azolla incorporation and dual cropping influences CH4 and N2O emissions from flooded paddy ecosystems. Soil Science and Plant Nutrition, 66: 152-162. https://doi.org/10.1080/00380768.2019.1705739

64.    Kautsar, V., *Cheng, W., Tawaraya, K., Susumu, Y., Toriyama K., Kobayashi, K. (2020) Carbon and nitrogen stocks and their mineralization potentials are higher under organic than conventional farming practices in Japanese Andosols. Soil Science and Plant Nutrition, 66: 144-151. https://doi.org/10.1080/00380768.2019.1705739

65.    Nguyen-Sy, T., *Cheng, W., Kimani, S.M., Shiono, H., Sugawara, R., Tawaraya, K., Watanabe, T., Kumagai, K. (2020) Stable carbon isotope ratios of water-extractable organic carbon affected by application of rice straw and rice straw compost during a long-term rice experiment in Yamagata, Japan. Soil Science and Plant Nutrition, 66: 125-132. https://doi.org/10.1080/00380768.2019.1708209

66.    Cheng, W. (2020) Soil carbon and nitrogen dynamics by land use and management changes in East and Southeast Asian countries (soil C and N by LUMC). Soil Science and Plant Nutrition, 66: 34-36. https://doi.org/10.1080/00380768.2020.1718923

67.    Nguyen-Sy, T., *Cheng, W., Tawaraya, K., Sugawara, K., Kobayashi, K. (2019) Impacts of climatic and varietal changes on phenology and yield components in rice production in Shonai region of Yamagata. Prefecture, Northeast Japan for 36 years. Plant Production Science, 22: 382-394. https://doi.org/10.1080/1343943X.2019.1571421

68.    Nguyen-Sy, T., *Cheng, W., Guigue, J., Kimani, S.M., Wibowo, W.A., Tawaraya, K., Watanabe, T., Wu, Ji., Xu, X. (2018) Water extractable organic carbon and nitrogen and their natural stable isotopes from long-term experiment in a Japanese rice paddy. Journal of Wetlands Environmental Management, 6: 60-73. http://dx.doi.org/10.20527/jwem.v6i2.176　　

69.    Matsushima, M.Y., Cheng, W., Tokida, T., Nakamura, H., Inubushi, K., Okada, M., Hasegawa, T. (2018) Effects of free-air CO2 enrichment on plant-derived carbon input in Andosol and Ultisol paddy soil as evaluated by carbon isotope changes. HortResearch, 72: 19－28. https://opac.ll.chiba-u.jp/da/curator/105023/, doi:10.20776/s18808824-72-p19

70.    Tawaraya, K., Honda, S., Cheng, W., Chuba, M., Okazaki, Y., Saito, K., Oikawa, A., Maruyama, H., Wasaki, J., Wagatsuma, T. (2018) Ancient rice cultivar extensively replaces phospholipids with non-phosphorus glycolipid under phosphorus deficiency. Physiologia Plantarum, 163: 297–305.

71.    Sato, T., Cheng, W., Tawaraya, K. (2018) Effects of indigenous and introduced arbuscular mycorrhizal fungi on the growth of Allium fistulosum under field conditions. Soil Science and Plant Nutrition, 64: 705-709.

72.    Maulana, A.F, Turjaman, M., Sato, T., Hashimoto, Y., Cheng, W., Tawaraya, K. (2018) Isolation of endophytic fungi from tropical forest in Indonesia. Symbiosis, 76, 151–162. https://doi.org/10.1007/s13199-018-0542-7.

73.    Kimani, S.M., *Cheng, W., Kanno, T., Nguyen-Sy, T., Abe, R., Oo, A.Z., Tawaraya, K., Sudo. S. (2018) Azolla cover significantly decreased CH4 but not N2O emissions from flooding rice paddy to atmosphere. Soil Science and Plant Nutrition, 64: 68-76. DOI: 10.1080/00380768.2017.1399775.

74.    Cheng, W., Kimani, S.M., Kanno, T., Tang, S., Oo, A.Z., Tawaraya, K., Sudo. S., Sasaki, Y., Yoshida, N. (2018) Forage rice varieties Fukuhibiki and Tachisuzuka emit larger CH4 than edible rice Haenuki. Soil Science and Plant Nutrition, 64: 77-83. DOI:10.1080/00380768.2017.1378569.

75.    小野剛志・玉井鉄宗・奈良吉主・土屋一成・程 為国・陽 捷行（2018）賢者が語る土壌の心髄、日本土壌肥料学雑誌 89: 73-79.

76.    Maulana, A.F, Turjaman, M., Hashimoto, Y., Cheng, W., Tawaraya, K. (2017) Nutrient concentration in growth medium affects relationship between root endophytic fungi and host plant. Journal of Experimental Agriculture International, 18(5): 1-11. DOI: 10.9734/JEAI/2017/37487.

77.    Maulana, A.F, Turjaman, M., Sato, T., Hashimoto, Y., Cheng, W., Tawaraya, K. (2017) Growth response of four leguminous trees to native arbuscular mycorrhizal fungi from tropical forest in Indonesia. International Journal of Plant & Soil Science 20(3): 1-13. DOI: 10.9734/IJPSS/2017/37433

78.    Kusumawardani, P.N., *Cheng, W., Purwanto, B.H., and Utami, S.N.H. (2017) Changes in the soil pH, EC, available-P, DOC and inorganic-N after land use change from rice paddy in northeast Japan. Journal of Wetlands Environmental Management, 5: 53–61.

79.    Wu, H., Xu, X., Cheng, W., Fu, P., Li, F. (2017) Antecedent soil moisture prior to freezing can affect quantity, composition and stability of soil dissolved organic matter during thaw. Scientific Reports, 7: 6380. doi: 10.1038/s41598-017-06563-8.

80.    Wu, H., Xu, X., Duan, C., Li, T., Cheng, W. (2017) Effect of carbon and nitrogen addition on nitrous oxide and carbon dioxide fluxes from thawing forest soils. International Agrophysics, 31: 339-349.

81.    Nakajima, M., Cheng, W., Hanayama, S. and Okada, M. (2017) Shallow autumn tillage does not reduce CH4 emission from an Andisol paddy field in Morioka, a cold region in Japan. Journal of Agricultural Meteorology, 73: 91-98.

82.    Tang, S., *Cheng, W., Hu, R., Nakajima, M., Guigue, J., Kimani, S.M., Sato, S., Tawaraya, K., Xu, X. (2017) Decomposition of soil organic carbon influenced by soil temperature and moisture in Andisol and Inceptisol paddy soils in a cold temperate region of Japan. Journal of Soils and Sediments, 17: 1843–1851. DOI: 10.1007/s11368-016-1607-y.

83.    Cheng, W., Padre, A.T., Shiono, H., Sato, C., Nguyen-Sy, T., Tawaraya, K., Kumagai, K. (2017) Changes in the pH, EC, available P, SOC and TN stocks in a single rice paddy after long-term application of inorganic fertilizers and organic matters in a cold temperate region of Japan. Journal of Soils and Sediments, 17: 1834–1842. DOI: 10.1007/s11368-016-1544-9.

84.    Tang, S., *Cheng, W., Hu, R., Guigue, J., Kimani, S.M., Tawaraya, K., Xu, X. (2016) Simulating the effects of soil temperature and moisture in the off-rice season on rice straw decomposition and subsequent CH4 production during the growth season in a paddy soil. Biology and Fertility of Soils, 52: 739–748. DOI:10.1007/s00374-016-1114-8

85.    Wu, H., Xu, X., Duan, C., Li, T., Cheng, W. (2016) Synergistic effects of dissolved organic carbon and inorganic nitrogen on methane uptake in forest soils without and with freezing treatment. Scientific Reports, 6: 32555. DOI: 10.1038/srep32555.

86.    Wulandari, D., Saridi, S., Cheng, W., Tawaraya, K. (2016) Arbuscular mycorrhizal fungal inoculation improves Albizia saman and Paraserianthes falcataria growth in post-opencast coal mine field in East Kalimantan, Indonesia. Forest Ecology and Management, 376: 67–73.

87.    Cheng, W., Padre, A.T., Sato, C., Shiono, H., Hattori, S., Kajihara, A., Aoyama, M., Tawaraya, K., Kumagai, K. (2016) Changes in the soil C and N contents, C decomposition and N mineralization potentials in a rice paddy after long-term application of inorganic fertilizers and organic matters. Soil Science and Plant Nutrition, 62: 212-219. DOI:10.1080/00380768.2016.1155169.

88.    Nakajima, M., *Cheng, W., Tang, S., Hori, Y., Yaginuma, E., Hattori, S., Hanayama, S., Tawaraya, K., Xu, X (2016) Modeling aerobic decomposition of rice straw during off-rice season in an Andisol paddy soil in a cold temperate region, Japan: Effects of soil temperature and moisture. Soil Science and Plant Nutrition, 62: 90–98. https://doi.org/10.1080/00380768.2015.1121116

89.    Xu, X., Duan, C., Wu, H., Li T., Cheng, W. (2016) Effect of intensity and duration of freezing on soil microbial biomass, extractable C and N pools, and N2O and CO2 emissions from forest soils in cold temperate region. Science China Earth Sciences, 59: 156–169. doi: 10.1007/s11430-015-5115-5.

90.    程　為国（2016）温暖化が水田からの温室効果ガスメタン放出量に及ぼす影響、農業および園芸、91: 194-198.

91.    谷山一郎・浅川 晋・奈良吉則・程 為国・斎藤雅典・陽 捷行（2016）土壌と東西の神々、日本土壌肥料学雑誌、87: 147-152.

92.    Laza, R.C., Sakai, H., Cheng, W., Tokida, T., Peng, S., Hasegawa, T. (2015) Differential response of rice plants to high night temperatures imposed at varying developmental phases. Agricultural and Forest Meteorology, 209: 69–77. doi:10.1016/j.agrformet.2015.04.029.

93.    Cheng, W., Takei, M., Sato, C., Kautsar. K., Sasaki, Y., Sato, S., Tawaraya, K., Yasuda, H. (2015) Combined use of Azolla and loach suppressed paddy weeds and increased organic rice yield: second season results. Journal of Wetlands Environmental Management, 3: 1–13.

94.    Wu, H., Xu, X., Duan, C., Li, T., Cheng, W. (2015) Effect of vegetation type, wetting intensity, and nitrogen supply on external carbon stimulated heterotrophic respiration and microbial biomass carbon in forest soils. Science China Earth Sciences, 58: 1446–1456. doi: 10.1007/s11430-015-5058-x.

95.    Cheng, W., Okamoto, Y., Takei, M., Tawaraya, K., Yasuda, H. (2015) Combined use of Azolla and loach suppressed weed Monochoria vaginalis and increased rice yield without agrochemicals. Organic Agriculture, 5: 1-10. DOI: 10.1007/s13165-015-0097-3.

96.    Sato, T., Ezawa, T., Cheng, W., Tawaraya, K. (2015) Release of acid phosphatase from extraradical hyphae of arbuscular mycorrhizal fungus Rhizophagus clarus. Soil Science & Plant Nutrition, 61: 269–274. DOI:10.1080/00380768.2014.993298.

97.    Hungate, B.A., Duval, B D., Dijkstra, P., Johnson, D.W., Ketterer, M E., Stiling, P., Cheng, W., Millman, J., Hartley, A., Stover, D.B. (2014) Nitrogen inputs and losses in response to chronic CO2 exposure in a subtropical oak woodland. Biogeosciences, 11: 3323–3337.

98.    Wulandari, D., Saridi, Cheng, W., Tawaraya, K. (2014) Arbuscular mycorrhizal colonization enhanced early growth of Mallotus paniculatus and Albizia saman under nursery conditions in East Kalimantan, Indonesiain. International Journal of Forestry Research, doi.org/10.1155/2014/898494.

99.    Tokida, T., Cheng, W., Adachi, M., Matsunami, T., Nakamura, H., Okada, M., Hasegawa, T. (2013) The contribution of entrapped gas bubbles to the soil methane pool and their role in methane emission from rice paddy soil in free-air [CO2] enrichment and soil warming experiments. Plant and Soil, 364: 131-143.

100.Zhu, C., Cheng, W., Sakai, H., Oikawa, S., Laza, R.C., Usui, Y., Hasegawa, T. (2013) Effects of elevated [CO2] on stem and root lodging among rice cultivars. Chinese Sciences Bulletin, 58: 1787-1794.

101.Fumoto, T., Hasegawa, T., Cheng, W., Hoque, M.M., Yamakawa, Y., Shimono, H., Kobayashi, K., Okada, M., Li, C., Yagi, K. (2013) Application of a process-based biogeochemistry model, DNDC-Rice, to a rice field under free-air CO2 enrichment (FACE). Journal of Agricultural Meteorology, 69: 173-190.

102.Tokida, T., Adachi, M., Cheng, W., Nakajima, Y., Fumoto, T., Matsushima, M., Nakamura, H., Okada, M., Sameshima, R., Hasegawa, T. (2011) Methane and soil CO2 production from current-season photosynthates in a rice paddy exposed to free-air CO2 enrichment. Global Change Biology, 17: 3327-3337.

103.Nishimura, S., Akiyama, H., Sudo, S., Fumoto, T., Cheng, W., Yagi, K. (2011) Combined emission of CH4 and N2O from a paddy field was reduced by preceding upland crop cultivation. Soil Science & Plant Nutrition, 57: 167-178.

104.Inubushi, K., Cheng, W., Mizuno, T., Lou, Y., Hasegawa, T., Sakai, H., Kobayashi, K. (2011) Microbial biomass carbon and methane oxidation influenced by rice cultivars and elevated CO2 in a Japanese paddy soil. European Journal of Soil Science, 62: 69-73.

105.Cheng, W., Sakai, H., Yagi, K. and Hasegawa, T. (2010) Combined effects of elevated [CO2] and high night temperature on carbon assimilation, nitrogen absorption, and the allocations of C and N by rice (Oryza sativa L.). Agricultural and Forest Meteorology, 150: 1174-1181.

106.Cheng, W., Sakai, H., Matsushima, M., Yagi, K. and Hasegawa, T. (2010) Response of Azolla filiculoides, a floating aquatic fern, to elevated CO2, temperature, and phosphorus levels. Hydrobiologia, 656: 5-14.

107.Cheng, W., Sakai, H., Nishimura, S., Yagi, K. and Hasegawa, T. (2010) The lowland paddy weed Monochoria vaginalis emits N2O, but not CH4. Agriculture, Ecosystems & Environment, 137: 219-221.

108.Tokida, T., Fumoto, T., Cheng, W., Matsunami, T., Adachi, M., Katayanagi, N., Matsushima, M., Okawara, Y., Nakamura, H., Okada, M., Sameshima, R., Hasegawa, T. (2010) Effects of free-air CO2 enrichment (FACE) and soil warming on CH4 emission from a rice paddy field: impact assessment and stoichiometric evaluation. Biogeosciences, 7: 2639-2653.


Awards:

2002 START Young Scientist Award, START Scientific Steering Committee, START, USA.

2005 JSSSPN Progress Award (shoureishou), Japanese Society of Soil Science and Plant Nutrition.  

2007 Best Poster Award at 224tn Meeting of  CSSJ, Crop Science Society of Japan

　

Appearance on television:

Science no frontier (Serial 2:Weiguo Cheng from China), Science Channel, 2004.02.20. 16:00~16:30