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Lettuce (Lactuca sativa L.) plants were grown under hydroponic system to characterize the diurnal change of nitrate concentration and nitrate uptake rate and to examine the effect of short term cold treatment to rhizosphere on nitrate concentration an...
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RISS 인기검색어
단기간 근권 저온처리가 수경재배 상추의 질산태 질소 함량에 미치는 영향 = Originals : Effect of Short Term Cold Treatment to Rhizosphere on Nitrate Concentration in Lettuce Plant under Hydroponic Culture System
한글로보기https://www.riss.kr/link?id=A30023184
- 저자
- 발행기관
- 학술지명
- 권호사항
-
발행연도
2002
-
작성언어
-
-
KDC
500
-
등재정보
KCI등재,SCOPUS
-
자료형태
학술저널
- 발행기관 URL
-
수록면
69-73(5쪽)
- DOI식별코드
- 제공처
- 소장기관
-
0
상세조회 -
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부가정보
다국어 초록 (Multilingual Abstract)
Lettuce (Lactuca sativa L.) plants were grown under hydroponic system to characterize the diurnal change of nitrate concentration and nitrate uptake rate and to examine the effect of short term cold treatment to rhizosphere on nitrate concentration and uptake rate in lettuce plant. The nitrate concentrations in midrib were two times higher than those in leaf. Nitrate concentration in the shoot reached to minimum (8.7 mg-N/GDW) at 14:00 and, thereafter, increased continuously until 23:00. During 11:00~17:00, nitrate uptake by lettuce plant was maximum (4.8 mg-N/GDW-Root/hr). Short term cold treatment reduced nitrate concentration in the shoot by 14~18%, and nitrate uptake rate by 50~55%, respectively. These results showed that short term cold treatment before harvest could be applied for the purpose of reduction of nitrate concentration in the leaf under hydroponic culture.
Lettuce (Lactuca sativa L.) plants were grown under hydroponic system to characterize the diurnal change of nitrate concentration and nitrate uptake rate and to examine the effect of short term cold treatment to rhizosphere on nitrate concentration and uptake rate in lettuce plant. The nitrate concentrations in midrib were two times higher than those in leaf. Nitrate concentration in the shoot reached to minimum (8.7 mg-N/GDW) at 14:00 and, thereafter, increased continuously until 23:00. During 11:00~17:00, nitrate uptake by lettuce plant was maximum (4.8 mg-N/GDW-Root/hr). Short term cold treatment reduced nitrate concentration in the shoot by 14~18%, and nitrate uptake rate by 50~55%, respectively. These results showed that short term cold treatment before harvest could be applied for the purpose of reduction of nitrate concentration in the leaf under hydroponic culture.
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