Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Effect of a Mixture of Extracts from Residues of Onion Left after Onion Harvesting and Purslane (Portulaca oleracea) on Productivity and Quality Characteristics of Organic Onions

양파 수확 후 잔재물과 쇠비름 추출물이 유기농 양파의 수확량 및 품질 특성에 미치는 영향

  • Kim, Tae-Won (Korea Seed Variety Service, Ministry of Agriculture, Food and Rural Affairs) ;
  • Jeon, Byeong-Gyun (Department of Biology Education, Gyeongsang National University) ;
  • Lee, Sung-Ho (Division of Life Science, Gyeongsang National University)
  • 김태원 (농림축산식품부 국립종자원) ;
  • 전병균 (경상대학교 생물교육학과) ;
  • 이성호 (경상대학교 생명과학부)
  • Received : 2017.08.01
  • Accepted : 2017.12.02
  • Published : 2017.12.30
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Abstract

This study assessed the effects of treatment with sap extract from onion residues postharvest and purslane on the quality and quantity of organic onions. At the bending stage, onions treated with the sap extract showed vigorous growth, with higher plant heights, more leaves, and longer sheath lengths than untreated onions. The onion yield was significantly increased when the plant was treated with extracted sap as compared with that of untreated plants (p<0.05). The bulb weight distribution of onions in the mixed onion and purslane treatment was also significantly increased (~300 g) as compared with that of the other treatment (p<0.05). Except for CaO and S, the mineral content of the onions produced from plants treated with the onion and purslane extract mixture was higher than those of onions in the other treatment. The hardness of onions produced from plants treated with the onion and purslane extract was significantly increased (8% and 20%, respectively) as compared with that of onions produced from plants treated with the onion extract only or no treatment (p<0.05). However, there was no significant difference in the sugar contents of the onions produced from extract-treated and nonextract-treated plants. Postharvest, the content of inorganic components (phosphate, calcium, sulfuric acid, and manganese) was higher in soil treated with the onion extract than in soil treated with the onion and purslane extract and non-treated soil. It can be concluded that residues left after onion harvests and purslane extract can be used as natural and environmentally friendly materials for the cultivation of organic onions.

본 연구는 수확 후 버려지는 양파 잔재물과 쇠비름으로부터 추출한 수액을 유기농 양파 재배 시 시비하여 유기농 양파의 수확량, 품질 등에 미치는 영향을 평가하였다. 도복기 때의 양파 생육은 초장, 엽수, 엽초경에서 식물추출액 처리구들이 무처리구보다 좋았다. 양파 수확량도 식물 추출액 처리구들이 무처리구보다 유의성 있게 증가되었으며(p<0.05), 구 중 분포에서는 상품성이 있는 300 g 이상의 대구 양파가 양파와 쇠비름 추출액 혼용 처리구에서 다른 처리구들보다 유의성 있게 증가 되었다(p<0.05). 양파의 무기성분 함량은 양파와 쇠비름 추출액 혼용 처리구에서 생산된 양파가 다른 처리구들에서 생산된 양파보다 석회와 황을 제외한 다량원소들이 높게 함유되었다. 양파의 경도는 양파와 쇠비름 추출액 혼용 처리구에서 생산된 양파가 양파 잔재물 추출액 처리구와 무처리구에서 생산된 양파보다 각각 8%와 20% 높게 나와 유의성을 나타내었지만(p<0.05), 당도는 모든 처리구에서 생산된 양파가 비슷하게 나와 유의성을 나타내지 않았다. 양파 수확 후 토양의 무기성분 함량은 양파 잔재물 추출액 처리구 토양에서 인산, 칼슘, 황산, 망간에서 높게 나타났다. 이상의 결과로 양파 수확 후 버려지는 잔재물과 길가에 방치되는 쇠비름의 추출물이 유기 양파 재배 시 천연 친환경 자재로 활용 가치가 있다고 보겠다.

Keywords

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