Page 254 - Technical Cooperation Project for Building Capacity for Can Tho University...

3 Progress of Joint Research Activities
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Research No.: ⑧ A-8 ODA Loan Joint Research Date: Oct. 27 , 2020
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1 General Title Studies on sustainable soil uses
Can Tho University: CHAU MINH KHOI (Leader), TRAN VAN DUNG, TRAN BA LINH, DANG DUY MINH,
Core NGUYEN MINH DONG
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Members Japanese Collaborators: TOYODA Koki (TUAT), HATANO Ryusuke (Hokkaido), NISHIMURA Taku (Tokyo)
Japanese Companies: HINO Isao (Summit Agro International LTD), UCHIDA Keisuke (Murata Manufacturing Co., Ltd)
3 Duration Jan. 2018 – Dec. 2020 (3 years) <1 Batch>
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Main To improve soil fertility and soil quality for crop production on alluvial soils, acid sulfate soils and saline-affected
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Objectives soils toward improving soil constraints and adapting to climate change in the Mekong River Delta
1. Identifying the negative impacts of saline water intrusion and drought on soil nutrients, physio-chemical and biological
changes, green house emission and crop production
=> Objective: This study is conducted to improve soil productivity and properties under saline intrusion condition and to
alleviate salt and drought stress impacts on crop growth in the dry season in the Mekong Delta.
Cropping systems/Treatments
1.Rice-Rice-Rice (Control) 5.Rice-Sesame-Rice + Silic amendment (100 kg/ha)
2.Rice-Sesame-Rice 6.Rice-Sesame-Rice + Regensoil Ultra (7 kg/ha)
3.Rice-Sesame-Rice + OM amendment (3 tons/ha) 7.Rice-Sesame-Rice + Bio-fertilizer(80 kg/ha)
4.Rice-Sesame-Rice + Biochar amendment (10
tons/ha)

Conducting and
5 Focal Points Studied site survey monitoring field trials Local people participation
and selection
in the project

2. Soil management practices for improving the sustainability of rice-shrimp farming systems in the Mekong Delta
=> Objective: This study aims to evaluate the negative effects of current rice-shrimp farming systems subjected to rice
cultivation and promote better soil management practices for improving sustainability of rice–shrimp farming systems in the
Mekong Delta, Viet Nam.
Field trial treatments
1.Farmer practice (Control)
2.Biochar amendment (10 tons/ha)
3.Biochar amendment (10 tons/ha) + Lime (2 tons/ha)
4.Regensoil Ultra (7 kg/ha)
5.Biochar amendment (10 tons/ha) + Regensoil Ultra (7
kg/ha) Field trial plots and visiting study sites with JICA experts
6.Bio-fertilizer(80 kg/ha)
1. Education:
+ 02 PhD finished their study in the Janpanese university; 02 Masters graduated in 2019 and other 03 students are going to complete their study in
the end of 2020; 08 BSc students graduated in 2019.
2. Publications:
2.1. International peer-reviewed papers
Phuong, N. T. K., Khoi, C. M., Sinh, N. V., Chiem, N. H., & Toyota, K. (2019). Effects of rice husk biochar and calcium amendment on remediation of
saline soil from rice-shrimp cropping system in Vietnamese Mekong Delta. Journal of Experimental Agriculture International, 39(2), 1-12.
Van Nguyen, S., Nguyen, P. T. K., Araki, M., Perry, R. N., Tran, L. B., Chau, K. M., ... & Toyota, K. (2020). Effects of cropping systems and soil
amendments on nematode community and its relationship with soil physicochemical properties in a paddy rice field in the Vietnamese Mekong
Delta. Applied Soil Ecology, 156, 103683.
6 Outputs and Phuong, N.T.K.; Khoi, C.M.; Ritz, K.; Sinh, N.V.; Tarao, M.; Toyota, K. (2020). Potential use of rice husk biochar and compost to improve P availability
Outcomes and reduce GHG emissions in acid sulfate soil. Agronomy, 10, 685.
Phuong, N.T.K.; Khoi, C.M.; Ritz, K.; Linh, T.B.; Minh, D.D.; Duc, T.A.; Sinh, N.V.; Linh, T.T.; Toyota, K. (2020). Influence of rice husk biochar and
compost amendments on salt contents and hydraulic properties of soil and rice yield in salt-affected fields. Agronomy, 10, 1101.
Nguyen, S., Nguyen, P., Araki, M., Perry, R. N., Tran, L., Chau, K., Min, Y., & Toyota, K. (2020). Seasonal variation and vertical distribution of
nematode communities and their relation to soil chemical property and rice productivity under triple rice cultivation in the Mekong Delta,
Vietnam, Nematology, 1-14 (online).
2.2. Vietnamese journal papers
Đặng Duy Minh, Trần Bá Linh, Trần Anh Đức và Châu Minh Khôi, 2020. Hiệu quả của chế phẩm cải tạo đất trong cải thiện đặc tính đất và sinh
trưởng của lúa trong điều kiện đất nhiễm mặn. Tạp chí Khoa học Trường Đại học Cần Thơ. 56 (Số chuyên đề: Khoa học đất): 159-168.
3. Book: Vo Thi Guong, Chau Minh Khoi and Chau Thi Anh Thy (2019). Textbook: Organic matter in soil (Vietnamese).
4. Short training: 02 short trainings in Japan for Dr. Chau Minh Khoi and Dr. Tran Van Dung.
ⓒ All Rights Reserved, Nov. 2020 (CTU)

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