Abstract
Salinity in soil, or irrigation water, can reduce plant growth, interfere with nutrient balance, and reduce crop yields. The effects of NaCl salinity and potassium level on the plant growth and severity of gray mold [Botrytis cinerea (De Bary) Whetzel] were investigated in lettuce (Lactuca sativa L. cvs. Beta and Paris Island) grown with the nutrient film technique (NFT) under greenhouse conditions during early spring. Plants were supplied with nutrient solutions containing 40 mM of sodium chloride (NaCl) and/or 10 mM potassium sulphate (K2SO4). Salinity or K-enrichment mainly affected the upper part of lettuce plants and reduced leaf fresh weight and leaf area. However, their combination reversed the negative impact of salinity on plant growth. Salinized and/or potassium-enriched plants did not differ in root length, leaf dry weight, leaf length, or numbers of leaves produced. Photosynthetic rate and the intercellular CO2 concentration did not differ among treatments, whereas stomatal conductance was reduced in salt-treated plants of cv. Paris Island. Salinity induced plant disease only for cv. Beta and greater disease severity was observed when salinity was combined with potassium. Total nutrient uptake was reduced 2-fold in salt-treated plants compared to controls. Lettuce grown in NFT had tolerance to NaCl salinity, and this method could be used to exploit saline water in soilless culture. These findings also suggest that a proper management of the salt concentration of the nutrient solution can provide an effective tool to improve the quality of leafy vegetables with little effect on yield.
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Claims 13
Claim · model-written summary
Salinity reduced lettuce leaf fresh weight and area.
- Taxon
- lettuce
Lactuca sativae0 - Treatment
- Salinitye0
- Outcome
- leaf fresh weight and leaf areae0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salinity or K-enrichment mainly affected the upper part of lettuce plants and reduced leaf fresh weight and leaf area”
Claim · model-written summary
K-enrichment reduced lettuce leaf fresh weight and area.
- Taxon
- lettuceLactuca sativae0
- Treatment
- K-enrichmente0
- Outcome
- leaf fresh weight and leaf areae0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salinity or K-enrichment mainly affected the upper part of lettuce plants and reduced leaf fresh weight and leaf area”
Claim · model-written summary
Combined salinity and potassium reversed the negative effect of salinity on lettuce growth.
- Taxon
- LettuceLactuca sativat0
- Treatment
- their combinatione0
- Outcome
- plant growthe0
- Direction
- reversede0
- Comparator
- salinitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“their combination reversed the negative impact of salinity on plant growth”
t0“Lettuce”
Claim · model-written summary
Salinity or potassium enrichment did not change lettuce root length, leaf dry weight, or leaf length.
- Taxon
- LettuceLactuca sativat0
- Treatment
- Salinized and/or potassium-enrichede0
- Outcome
- root length, leaf dry weight, leaf lengthe0
- Direction
- did not differe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salinized and/or potassium-enriched plants did not differ in root length, leaf dry weight, leaf length, or numbers of leaves produced”
t0“Lettuce”
Claim · model-written summary
Salinity or potassium enrichment did not change the number of lettuce leaves.
- Taxon
- LettuceLactuca sativat0
- Treatment
- Salinized and/or potassium-enrichede0
- Outcome
- numbers of leaves producede0
- Direction
- did not differe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salinized and/or potassium-enriched plants did not differ in root length, leaf dry weight, leaf length, or numbers of leaves produced”
t0“Lettuce”
Claim · model-written summary
Photosynthetic rate and intercellular CO2 concentration did not differ among lettuce treatments.
- Taxon
- LettuceLactuca sativat0
- Treatment
- treatmentse0
- Outcome
- Photosynthetic rate and the intercellular CO2 concentratione0
- Direction
- did not differe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Photosynthetic rate and the intercellular CO2 concentration did not differ among treatments”
t0“Lettuce”
Claim · model-written summary
Salt treatment reduced stomatal conductance in lettuce cv. Paris Island.
- Taxon
- LettuceLactuca sativat0
- Material
- cv. Paris Islande0
- Treatment
- salt-treatede0
- Outcome
- stomatal conductancee0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“stomatal conductance was reduced in salt-treated plants of cv. Paris Island”
t0“Lettuce”
Claim · model-written summary
Salinity induced gray mold disease only in lettuce cv. Beta.
- Taxon
- lettuceLactuca sativae1
- Material
- cv. Betae0
- Treatment
- Salinitye0
- Interactor
- Botrytis cinerea
Botrytis cinereae1pathogen - Outcome
- plant diseasee0
- Direction
- inducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salinity induced plant disease only for cv. Beta”
e1“gray mold [Botrytis cinerea (De Bary) Whetzel] were investigated in lettuce”
Claim · model-written summary
Combining salinity with potassium increased disease severity in lettuce.
- Taxon
- lettuceLactuca sativae1
- Treatment
- salinity was combined with potassiume0
- Interactor
- Botrytis cinereaBotrytis cinereae1pathogen
- Outcome
- disease severitye0
- Direction
- greatere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“greater disease severity was observed when salinity was combined with potassium”
e1“gray mold [Botrytis cinerea (De Bary) Whetzel] were investigated in lettuce”
Claim · model-written summary
Salt treatment reduced total lettuce nutrient uptake twofold relative to controls.
- Taxon
- LettuceLactuca sativat0
- Treatment
- salt-treatede0
- Outcome
- Total nutrient uptakee0
- Direction
- reducede0
- Value
- 2-folde0
- Comparator
- controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total nutrient uptake was reduced 2-fold in salt-treated plants compared to controls”
t0“Lettuce”
Claim · model-written summary
Lettuce grown by nutrient film technique tolerated NaCl salinity.
- Taxon
- LettuceLactuca sativae0
- Treatment
- NaCl salinitye0
- Outcome
- tolerance to NaCl salinitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lettuce grown in NFT had tolerance to NaCl salinity”
Claim · model-written summary
The authors propose nutrient film technique for using saline water in soilless lettuce culture.
- Taxon
- LettuceLactuca sativat0
- Outcome
- exploit saline water in soilless culturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“this method could be used to exploit saline water in soilless culture”
t0“Lettuce”
Claim · model-written summary
The authors recommend managing nutrient solution salt concentration to improve leafy vegetable quality with little yield effect.
- Taxon
- LettuceLactuca sativat0
- Outcome
- improve the quality of leafy vegetables with little effect on yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a proper management of the salt concentration of the nutrient solution can provide an effective tool to improve the quality of leafy vegetables with little effect on yield”
t0“Lettuce”
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