Abstract
Since the salinity of irrigation water is a critical constraint to the production of certain vegetable crops, salinity has been considered as one of the most important factors of irrigation water. The objective of this study was to investigate the response of lettuce and Chinese cabbage to various salinity levels of irrigation water in greenhouse cultivation. A pot experiment was conducted with different salinities under a glasshouse condition in Korea. A completely randomized experimental design was used with three replications. The analysis results of crop growth and yield of lettuce and Chinese cabbage indicated that the factors that were more significantly affected by saline irrigation water were crop yields rather than crop components such as number of leaves, leaf length, and leaf width. In this study, the point of salt concentration during an increase in salinity levels of irrigation water (ECw) at which yield starts to decline was determined to be 0.9 and 1.5 dS/m for lettuce and Chinese cabbage, respectively. Furthermore, the present study demonstrated that the continuous irrigation of saline water under greenhouse conditions could lead to a significant increase in electric conductivity (ECe) level and Na+ concentration in soil, as well as Na+ concentration in leaves of crops.
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Claims 5
Claim · model-written summary
Saline irrigation affected lettuce and Chinese cabbage yield more strongly than leaf number, length and width.
- Taxon
- lettuce and Chinese cabbage
Lactuca sativa
Brassica rapa subsp. pekinensise0 - Treatment
- saline irrigation watere0
- Outcome
- crop yieldse0
- Direction
- more significantly affectede0
- Comparator
- crop components such as number of leaves, leaf length, and leaf widthe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“crop growth and yield of lettuce and Chinese cabbage indicated that the factors that were more significantly affected by saline irrigation water were crop yields rather than crop components such as number of leaves, leaf length, and leaf width.”
Claim · model-written summary
Lettuce yield began to decline at irrigation water salinity of 0.9 dS/m.
- Taxon
- lettuceLactuca sativae0
- Outcome
- yielde0
- Direction
- declinee0
- Value
- 0.9e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“yield starts to decline was determined to be 0.9 and 1.5 dS/m for lettuce and Chinese cabbage, respectively.”
Claim · model-written summary
Chinese cabbage yield began to decline at irrigation water salinity of 1.5 dS/m.
- Taxon
- Chinese cabbageBrassica rapa subsp. pekinensise0
- Outcome
- yielde0
- Direction
- declinee0
- Value
- 1.5 dS/me0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“yield starts to decline was determined to be 0.9 and 1.5 dS/m for lettuce and Chinese cabbage, respectively.”
Claim · model-written summary
Continuous saline irrigation significantly increased soil electrical conductivity and soil sodium concentration.
- Taxon
- Cropt0
- Treatment
- continuous irrigation of saline watere0
- Outcome
- electric conductivity (ECe) level and Na+ concentration in soile0
- Direction
- increasee0
- Setting
- greenhouse conditionse0
Not reportedComparator
Verbatim
e0“continuous irrigation of saline water under greenhouse conditions could lead to a significant increase in electric conductivity (ECe) level and Na+ concentration in soil”
t0“Crop Growth”
Claim · model-written summary
Continuous saline irrigation significantly increased sodium concentration in crop leaves.
- Taxon
- cropse0
- Organ / stage
- leavese0
- Treatment
- continuous irrigation of saline watere0
- Outcome
- Na+ concentration in leaves of cropse0
- Direction
- increasee0
- Setting
- greenhouse conditionse0
Not reportedComparator
Verbatim
e0“continuous irrigation of saline water under greenhouse conditions could lead to a significant increase in electric conductivity (ECe) level and Na+ concentration in soil, as well as Na+ concentration in leaves of crops.”
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