Effects of Nursery Site and Seedling Age on Seedling Quality and Automatic Transplanting Performance of Summer Kimchi Cabbage

Hyuntaek Seo; Sewon Kim; Kyusuk Han; Yong Beom Kwon; Ho-Min Kang

doi:10.22698/jales.20260016

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2026 Vol.38, Issue 3 Next Page

Effects of Nursery Site and Seedling Age on Seedling Quality and Automatic Transplanting Performance of Summer Kimchi Cabbage

30 September 2026. pp. 239-251

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Abstract

This study was conducted to determine the effects of nursery site and seedling age on seedling quality and mechanical transplanting performance of summer kimchi cabbage using a domestically produced automatic transplanter. Seedlings were raised for 20, 25, 28, and 30 days at a highland nursery in Taebaek and a lowland nursery in Chuncheon. Root-zone temperature exceeded 35°C for 13.2 to 31.6 h at Chuncheon but never at Taebaek. Seedlings at Chuncheon completed root establishment early and then elongated rapidly, reaching a plant height 8.0 cm at 28 days, whereas those at Taebaek elongated gradually and developed more leaves. Transplanting failure arose from two opposing causes: extraction failure predominated at shorter seedling ages, reaching 15.6% at 20 days at Taebaek, and seedling displacement at longer ages, reaching 13.6% at 30 days at Chuncheon. Transplanting rate was consequently highest at 28 days at Taebaek (94.1%) and at 25 days at Chuncheon (96.8%), where root coverage index was 5.9 and 6.3 and plant height 5.6 and 7.4 cm, respectively. Extraction failure was approximately 2% in treatments with a root coverage index of 5.9 or higher, indicating an association between greater root coverage and lower extraction failure. Nursery management should therefore be differentiated by site, with a shorter nursery period at warm lowland nurseries than at cool highland nurseries.

Keywords

Automatic transplanter

Brassica rapa L.

Root coverage index

Seedling age

Transplanting rate

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Information

Publisher :Agriculture and Life Sciences Research Institute, Kangwon National University
Publisher(Ko) :None
Journal Title :Journal of Agricultural, Life and Environmental Sciences
Volume : 38
No :3
Pages :239-251
Received Date : 2026-08-11
Revised Date : 2026-08-19
Accepted Date : 2026-08-19
DOI :https://doi.org/10.22698/jales.20260016

Journal of Agricultural, Life and Environmental Sciences ISSN:2233-8322(Print) 2508-870X(Online)

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