J.Technology and Education, Vol.33, No.1, pp.47-51 (2026)
研究論文

蟹殻廃棄物が植物苗の生育に及ぼす効果

 

松野　敏英^1*，牧田　礼望²

¹福井工業高等専門学校 未来社会デザイン工学科 材料・生物系（〒916-8507 福井県鯖江市下司町）
²福井市光陽中学校（〒910-0026 福井県福井市光陽4丁目7-1）

*matsuno@fukui-nct.ac.jp

 

Effects of Crab Shell Waste on the Growth of Plant Seedlings

 

Toshihide MATSUNO^1*, Ayano MAKIDA²

¹Materials Science and Bioengineering Division, Department of Engineering the Future Society,
National Institute of Technology (KOSEN), Fukui College (Geshi, Sabae, Fukui 916-8507, Japan)
²Koyo Junior High School (4-7-1 Koyo, Fukui, Fukui 910-0026, Japan)

 

(Received May 18, 2026; Accepted June 21, 2026)

 

This study examined the growth-promoting effects of crab shell waste on plant seedlings using two experimental approaches. In the first experiment, seeds of radish (kaiware daikon) were sown and cultivated in aqueous solutions derived from crab shell extract at dilution ratios of 15-, 60-, 150-, and 300-fold, with tap water serving as a control. Germination rates were higher in the 15- and 60-fold treatments than in the others. In addition, these treatments resulted in significantly longer seedlings than the other treatments (P < 0.05). In the second experiment, biodegradable seedling pots incorporating crab shell materials were fabricated using traditional Japanese paper from Fukui Prefecture. Eighteen days after sowing, radish seedlings (hatsuka daikon) grown in crab shell?amended pots exhibited significantly greater seedling lengths than those grown in pots without crab shells (P < 0.05). These findings demonstrate that crab shell waste can promote early plant growth under specific conditions and highlight its potential as a sustainable agricultural resource.

Keywords: Crab shell waste, Plant growth promotion, Germination rate, Seedling length, Japanese paper