Events

About this symposium

INMAS 2026 is a public international symposium on nitrogen management and agroecosystem services. Nitrogen connects food production, water quality, climate, and agroecosystem services. The symposium explores how nitrogen management can support sustainable agriculture and agroecosystem services by linking international frameworks, monitoring and modeling tools, and local action. The program will discuss how scientific evidence and assessment tools can help support local action and future collaboration. The symposium commemorates the 100th anniversary of the Japanese Society of Soil Science and Plant Nutrition.

Poster download

Event overview

Format:

Hybrid (on-site and online)

Date and time:

Wednesday, October 21, 2026
13:30-17:30 JST (UTC+9)
On-site reception and doors open at 13:00

Language:

English

Participation and registration

Participation is free. Registration is required.
Please register by October 19, 2026.

Click to access the registration form.

On-site venue and access

Venue:

Nakajima Touichiro Memorial Hall

Food Science Building, 2F
Yayoi Campus, The University of Tokyo
1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan

Access:

A short walk from Todaimae Station, Tokyo Metro Namboku Line

Campus Map

Online participation

Platform:

Zoom webinar
Online access details will be provided after registration.

Organizers

• Japanese Society of Soil Science and Plant Nutrition (JSSSPN)
• Institute for Agro-Environmental Sciences, NARO

Program

13:00 On-site reception and doors open

13:30 Opening remarks

Takuro Shinano

President, Japanese Society of Soil Science and Plant Nutrition (JSSSPN); Hokkaido University

13:35 Background and framing

Azusa Oita

NARO

13:45 Keynote lecture

Luis Lassaletta

CEIGRAM/ETSIAAB, Universidad Politécnica de Madrid; INI Europe Director [online]

"The urgency of circularity: reconnecting systems to overcome linear inefficiencies in an unstable world."

Abstract

The global energy crisis reinforces, more than ever, the need to reduce dependence on new nitrogen (N) inputs by lowering overall consumption, decreasing fertilizer dependency, relocalizing production, and maximizing the reuse of regional nitrogen sources. Different typologies of agri-food systems will be analyzed to understand the long-term transitions of regional systems toward openness and specialization, in contrast to relocalized and reconnected crop, livestock, and agri-food systems.

Keywords

Sustainable nitrogen management; crop and livestock disconnection; nitrogen waste; fertilizer dependency; circularity

14:25 Break

14:40 Thematic presentations

Integrating nitrogen management and agroecosystem services: challenges and opportunities

Agricultural ecosystems

Takeshi Osawa (Tokyo Metropolitan University)

"The multifunctionality of agricultural ecosystems: balancing food production, biodiversity, and disaster risk reduction."

Nitrogen monitoring

Kathrin Grahmann (Leibniz Centre for Agricultural Landscape Research, ZALF)

"Nitrogen monitoring using digital tools for enhanced ecosystem services in agricultural landscapes."

Farmland management and process models

Nobuko Katayanagi (NARO)

"Farmland management and process models for sustainable nitrogen management."

Policy and incentives

Hisako Nomura (Kyushu University)

"Incentives and environmental policy potential for sustainable agriculture: case studies of local solutions."

16:00 Break

16:15 Panel discussion

Future perspectives for sustainable agriculture and nitrogen management: from global frameworks to local action

Facilitator

Sonoko Dorothea Bellingrath-Kimura (ZALF)

Panelists and short inputs

Shoji Hashimoto (Forestry and Forest Products Research Institute (FFPRI); The University of Tokyo)

Short input: "Nitrogen retention and loss in forest ecosystems: implications for landscape-scale nitrogen management."

Naoki Yoshikawa (The University of Shiga Prefecture)

Short input: "From LCA results to local action: decision-support tools for sustainable agri-food systems."

Kathrin Grahmann (ZALF)

Short input: "Sustainable rice cropping systems in Uruguay for improved nitrogen use efficiency."

Hisako Nomura (Kyushu University)

Azusa Oita (NARO)

17:25 Closing remarks

Noriyuki Koizumi

Director, Institute for Agro-Environmental Sciences, NARO

17:30 Close

Contact

For any inquiries regarding the symposium, please use the inquiry form below.
Please submit inquiries by October 19, 2026, whenever possible. We may not be able to respond before the symposium to inquiries received after that date. Thank you for your understanding.

Inquiry form (Click here)

Related information

N2026, the 10th International Nitrogen Conference, will be held in Kyoto, Japan, November 2-7, 2026.
N2026 Website