CACrown ArchivesThe cinema collection
Menu
Research dossier · People & Ideas

Woo Jang-chun

agricultural scientist, botanist (1898-1959)

Correspondence, annotated notebooks and portrait silhouettes prepared for research
People and ideasInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionAug 19, 2026
Entity authorityQ489271 ↗
Source-derived summary

Woo Jang-chun (April 8, 1898 – August 10, 1959) was an agricultural scientist and botanist active in Japanese Korea and later in South Korea, famous for his discoveries in the genetics and breeding of plants.

Woo was born and raised in Japan, overcoming poverty and discrimination in Imperial Japan to become a prominent researcher and teacher. When Japanese rule over Korea ended in 1945, Woo left his mother, wife, and children in Japan and settled in what would become South Korea to lead the country's efforts in botany and agriculture. There is a memorial museum in the port city of Busan, where he lived and worked in Korea, honoring his life and accomplishments.

Woo is credited in scientific literature as Nagaharu U ( OO), a Japanese reading of the hanja of his Korean name; the pronunciation of his family name 禹 can be Romanized as U in both Japanese (う) and Korean (우).

Early life

Woo was born on April 8, 1898, in Akasaka, Tokyo and raised in Kure, Hiroshima, he was the first son of a Japanese mother, Naka Sakai (사카이 나카, 酒井ナカ) and a Korean father, Woo Beom-seon (禹範善, 우범선) of the Danyang Woo clan (본관: 단양 우씨, 丹陽 禹氏). Woo Beom-seon served as the commander of the first battalion of the Hullyeondae (a Japanese-trained Korean military force) during the late Joseon period and had sought political asylum in Japan. He was involved in the Gaehwapa movement (a modernization faction) and personally commanded the 2nd Battalion of the Hullyeondae Regiment, which attacked the Palace, and allowed the Japanese ronin to assassinate Empress Myeongseong in the Eulmi Incident, which also led to the murder of two other women on October 13, 1895. Fifty-five Japanese nationals were arrested and tried for involvement but won acquittal in a Japanese court due to lack of evidence. Meanwhile, Queen Min's son, Crown Prince Yi Cheok, accused Woo Beom-seon of complicity in the murders and he fled to Japan.

Editorial summary

This brief starts where responsible research should: with the source description of “Woo Jang-chun” as agricultural scientist, botanist (1898-1959). Everything that follows is an evidence route, not borrowed authority.

Editorial reviewA productive starting point for separating a subject’s documented career from later reputation and commemoration. The current lead gives the account dated anchors—1898, 1959, 1945, 1895—that can be checked directly. The linked authority record independently contributes the date 1898-04-08. The account is most persuasive where Jang-chun, agricultural and scientist can be independently traced.
Editorial analysis

Why this record matters

The subject matters to the people & ideas register because the source frames it as agricultural scientist, botanist (1898-1959). Its deeper value depends on whether names, dates, institutions and citations support that framing.

Evidence profile

Chronology provides the most reliable spine for this subject; interpretation should follow only after identities and dates are secure. The source revision retrieved here is dated Aug 19, 2026. The linked authority identifier is Q489271. VIAF identifies the subject as 16192026. The Library of Congress control number is n85044628. 2 of 3 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1898, 1959, 1945 and 1895.

Critical limits

A concise life account rarely captures disputed attribution, private networks or the changing language used to describe a career. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Read biographical claims against dates, named institutions and the cited references. Distinguish a subject’s later reputation from evidence produced during their lifetime.

Best used for
  • Establishing names and roles
  • Building a first chronology
  • Locating cited institutions
Verify next

Personal papers, civil or court records, institutional files and the scholarship cited by the source.

Three-step research path

  1. Establish the record: confirm the title “Woo Jang-chun”, its source revision and the description used here.
  2. Expand the search: follow Woo Jang-chun primary sources, Woo Jang-chun archive and Jang-chun research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

  1. Which source most directly establishes the central claim about “Woo Jang-chun”?
  2. Which primary records establish identity, chronology and institutional ties?
  3. How has the subject’s reputation changed across later accounts?
Subject index

Search terms from this dossier

Source & attribution

This entry incorporates text from “Woo Jang-chun” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.