Abstract
The research was aimed to improve pre-harvest methods to maintain marketability in postharvest leaf lettuce. In this study, the effect of hydroponics on the growth and post-harvest storage characteristics of ‘Chongchima’ lettuce grown in peat mass medium hydroponic system using a non-powered culture device or deep water culture (DWC) was evaluated. There was no difference in fresh weight, leaf number, SPAD, moisture content, and C/N ratio between peat moss growing medium hydroponic and DWC methods except plant height. It was found that lettuce cultivation by a nonpowered hydroponics method is easier than the existing DWC. The quality parameters, such as fresh weight loss, SPAD value, and general appearance of lettuce were investigated after harvest. There was no significant difference in fresh weight loss and general appearance during storage of lettuce by the hydroponics methods. However, with the increased storage time of SPAD, which is related to chlorophyll content, was slightly higher in peat moss medium hydroponic was than DWC. When crops such as lettuce are grown under favorable conditions without any agronomic abnormalities, it is suggested that post-harvest storage is not significantly affected by peat moss growing medium hydroponic and DWC.
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Claims 6
Claim · model-written summary
Peat moss hydroponic and DWC lettuce showed no difference in fresh weight, leaf number and SPAD
- Taxon
- lettuce
Lactuca sativae0 - Material
- Chongchimae0
- Treatment
- peat moss growing medium hydroponice1
- Outcome
- fresh weight, leaf number, SPADe1
- Direction
- no differencee1
- Comparator
- DWCe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“‘Chongchima’ lettuce”
e1“There was no difference in fresh weight, leaf number, SPAD, moisture content, and C/N ratio between peat moss growing medium hydroponic and DWC methods except plant height”
Claim · model-written summary
Peat moss hydroponic and DWC lettuce showed no difference in moisture content and C/N ratio
- Taxon
- lettuceLactuca sativae0
- Material
- Chongchimae0
- Treatment
- peat moss growing medium hydroponice1
- Outcome
- moisture content, and C/N ratioe1
- Direction
- no differencee1
- Comparator
- DWCe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“‘Chongchima’ lettuce”
e1“There was no difference in fresh weight, leaf number, SPAD, moisture content, and C/N ratio between peat moss growing medium hydroponic and DWC methods except plant height”
Claim · model-written summary
Plant height differed between peat moss hydroponic and DWC lettuce
- Taxon
- lettuceLactuca sativae0
- Material
- Chongchimae0
- Treatment
- peat moss growing medium hydroponice1
- Outcome
- plant heighte1
- Comparator
- DWCe1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“‘Chongchima’ lettuce”
e1“There was no difference in fresh weight, leaf number, SPAD, moisture content, and C/N ratio between peat moss growing medium hydroponic and DWC methods except plant height”
Claim · model-written summary
Fresh weight loss and general appearance of lettuce did not differ significantly during storage between the hydroponic methods
- Taxon
- lettuceLactuca sativae2
- Treatment
- hydroponics methodse2
- Outcome
- fresh weight loss and general appearancee2
- Direction
- no significant differencee2
- Qualifier
- during storagee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“There was no significant difference in fresh weight loss and general appearance during storage of lettuce by the hydroponics methods”
Claim · model-written summary
SPAD during storage was slightly higher in peat moss hydroponic lettuce than in DWC lettuce
- Taxon
- lettuceLactuca sativae0
- Material
- Chongchimae0
- Treatment
- peat moss medium hydroponice3
- Outcome
- SPADe3
- Direction
- highere3
- Qualifier
- with the increased storage timee3
- Comparator
- DWCe3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“‘Chongchima’ lettuce”
e3“with the increased storage time of SPAD, which is related to chlorophyll content, was slightly higher in peat moss medium hydroponic was than DWC”
Claim · model-written summary
Non-powered hydroponic lettuce cultivation is easier than the existing DWC method
- Taxon
- lettuceLactuca sativae4
- Outcome
- lettuce cultivatione4
- Direction
- easiere4
- Comparator
- the existing DWCe4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“It was found that lettuce cultivation by a nonpowered hydroponics method is easier than the existing DWC”
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