Dry direct-seeded rice in north-eastern Japan: management and future prospects
Continuing decreases in the agricultural workforce in Japan necessitate labour-saving rice production systems. One system is dry direct seeding of rice, as recently implemented in north-eastern Japan. Many studies are reported only in Japanese. Here we introduce them to readers in other countries fa...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Taylor & Francis Group
2025-04-01
|
| Series: | Plant Production Science |
| Subjects: | |
| Online Access: | https://www.tandfonline.com/doi/10.1080/1343943X.2025.2463513 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850142169028886528 |
|---|---|
| author | Mari Namikawa Maya Matsunami |
| author_facet | Mari Namikawa Maya Matsunami |
| author_sort | Mari Namikawa |
| collection | DOAJ |
| description | Continuing decreases in the agricultural workforce in Japan necessitate labour-saving rice production systems. One system is dry direct seeding of rice, as recently implemented in north-eastern Japan. Many studies are reported only in Japanese. Here we introduce them to readers in other countries facing similar social problems. Yields of dry-seeded rice are ~10% lower than those of transplanted rice. Weed control, land preparation, and spatial variability of soil are important to field management. A cool climate and low N use efficiency constrain rice growth. Both plant N uptake per amount applied and yield per unit N uptake are lower in dry direct-seeded rice. Enhancing source capacity during grain filling is a key to increasing yield. Climate change, energy use, and N pollution constrain sustainable production. Direct-seeding cultivation can reduce the energy inputs per yield and per area relative to transplanting. Improving fertilizer use efficiency will reduce fossil fuel use. Over the past 30 years, rice yield per unit area in Japan has not changed, whereas yield per working hours has increased. Considering yield per working hours could further improve rice production in Japan. |
| format | Article |
| id | doaj-art-eaa7b009e8a14b7f8d100066ac1c794c |
| institution | OA Journals |
| issn | 1343-943X 1349-1008 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Plant Production Science |
| spelling | doaj-art-eaa7b009e8a14b7f8d100066ac1c794c2025-08-20T02:29:11ZengTaylor & Francis GroupPlant Production Science1343-943X1349-10082025-04-0128210712110.1080/1343943X.2025.2463513Dry direct-seeded rice in north-eastern Japan: management and future prospectsMari Namikawa0Maya Matsunami1Tohoku Agricultural Research Center, National Agriculture and Food Research Organization (NARO), Morioka, JapanThe United Graduate School of Agricultural Sciences, Iwate University, Morioka, JapanContinuing decreases in the agricultural workforce in Japan necessitate labour-saving rice production systems. One system is dry direct seeding of rice, as recently implemented in north-eastern Japan. Many studies are reported only in Japanese. Here we introduce them to readers in other countries facing similar social problems. Yields of dry-seeded rice are ~10% lower than those of transplanted rice. Weed control, land preparation, and spatial variability of soil are important to field management. A cool climate and low N use efficiency constrain rice growth. Both plant N uptake per amount applied and yield per unit N uptake are lower in dry direct-seeded rice. Enhancing source capacity during grain filling is a key to increasing yield. Climate change, energy use, and N pollution constrain sustainable production. Direct-seeding cultivation can reduce the energy inputs per yield and per area relative to transplanting. Improving fertilizer use efficiency will reduce fossil fuel use. Over the past 30 years, rice yield per unit area in Japan has not changed, whereas yield per working hours has increased. Considering yield per working hours could further improve rice production in Japan.https://www.tandfonline.com/doi/10.1080/1343943X.2025.2463513Cool temperatelabour-savingOryza sativaproductivityTohokuyield |
| spellingShingle | Mari Namikawa Maya Matsunami Dry direct-seeded rice in north-eastern Japan: management and future prospects Plant Production Science Cool temperate labour-saving Oryza sativa productivity Tohoku yield |
| title | Dry direct-seeded rice in north-eastern Japan: management and future prospects |
| title_full | Dry direct-seeded rice in north-eastern Japan: management and future prospects |
| title_fullStr | Dry direct-seeded rice in north-eastern Japan: management and future prospects |
| title_full_unstemmed | Dry direct-seeded rice in north-eastern Japan: management and future prospects |
| title_short | Dry direct-seeded rice in north-eastern Japan: management and future prospects |
| title_sort | dry direct seeded rice in north eastern japan management and future prospects |
| topic | Cool temperate labour-saving Oryza sativa productivity Tohoku yield |
| url | https://www.tandfonline.com/doi/10.1080/1343943X.2025.2463513 |
| work_keys_str_mv | AT marinamikawa drydirectseededriceinnortheasternjapanmanagementandfutureprospects AT mayamatsunami drydirectseededriceinnortheasternjapanmanagementandfutureprospects |