Abstract
ABSTRACT Irrigation with brackish water is common in the semiarid region of the Brazilian Northeast, potentiating the process of salinization of the soil in these areas. The hydroponic system stands out as an important strategy for crop management in semiarid regions, since crops show greater tolerance to the salt stress under hydroponic conditions, which minimize the effects of soil salinization. Thus, the objective of this work was to evaluate the effects of salt stress on the growth, fruit yield and mineral nutrition of sweet pepper in hydroponic system, using brackish water and coconut fiber substrate. The experiment was conducted in Recife, State of Pernambuco, Brazil (8°3'15''S, 34°52'53''W). A randomized block experimental design in a 5x2 factorial arrangement with five replications was used, consisting of five water salinity levels of the nutrient solution (2.0; 3.5; 4.5; 5.5 and 6.5 dS m-1) and two sweet pepper cultivars (Bruno and Rubia). The increasing salinity level of the nutrient solution decreased the fruit yield of the cultivars evaluated, reduced the potassium, phosphorus and sulfur, and increased the sodium and chlorine contents in the leaf tissues. The Ca contents of the cultivar Bruno decreased with increasing salinity, and increased in the cultivar Rubia. The cultivar Rubia stood out with the highest fruit yield and ionic selectivity, accumulating high amounts of potassium and calcium and maintaining low Na and Cl contents. The fruit yield of the cultivar Rubia (39.9 t ha-1) grown under solution with electrical conductivity of up to 3.5 dS m-1, denotes the potential viability of growing this cultivar under hydroponic conditions.
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Claims 10
Claim · model-written summary
Increasing salinity of the nutrient solution decreased the fruit yield of both sweet pepper cultivars.
- Taxon
- sweet pepper
Capsicum annuume0 - Treatment
- increasing salinity level of the nutrient solutione1
- Outcome
- fruit yielde1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two sweet pepper cultivars (Bruno and Rubia)”
e1“The increasing salinity level of the nutrient solution decreased the fruit yield of the cultivars evaluated, reduced the potassium, phosphorus and sulfur, and increased the sodium and chlorine contents in the leaf tissues”
Claim · model-written summary
Increasing salinity of the nutrient solution reduced potassium, phosphorus and sulfur contents in sweet pepper leaf tissues.
- Taxon
- sweet pepperCapsicum annuume0
- Organ / stage
- leaf tissuese1
- Treatment
- increasing salinity level of the nutrient solutione1
- Outcome
- potassium, phosphorus and sulfure1
- Direction
- reducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two sweet pepper cultivars (Bruno and Rubia)”
e1“The increasing salinity level of the nutrient solution decreased the fruit yield of the cultivars evaluated, reduced the potassium, phosphorus and sulfur, and increased the sodium and chlorine contents in the leaf tissues”
Claim · model-written summary
Increasing salinity of the nutrient solution increased sodium and chlorine contents in sweet pepper leaf tissues.
- Taxon
- sweet pepperCapsicum annuume0
- Organ / stage
- leaf tissuese1
- Treatment
- increasing salinity level of the nutrient solutione1
- Outcome
- sodium and chlorine contentse1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two sweet pepper cultivars (Bruno and Rubia)”
e1“The increasing salinity level of the nutrient solution decreased the fruit yield of the cultivars evaluated, reduced the potassium, phosphorus and sulfur, and increased the sodium and chlorine contents in the leaf tissues”
Claim · model-written summary
The Ca content of cultivar Bruno decreased with increasing salinity.
- Taxon
- sweet pepperCapsicum annuume0
- Material
- Brunoe1
- Treatment
- increasing salinitye1
- Outcome
- Ca contentse1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two sweet pepper cultivars (Bruno and Rubia)”
e1“The Ca contents of the cultivar Bruno decreased with increasing salinity, and increased in the cultivar Rubia”
Claim · model-written summary
The Ca content of cultivar Rubia increased with increasing salinity.
- Taxon
- sweet pepperCapsicum annuume0
- Material
- Rubiae1
- Treatment
- increasing salinitye1
- Outcome
- Ca contentse1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two sweet pepper cultivars (Bruno and Rubia)”
e1“The Ca contents of the cultivar Bruno decreased with increasing salinity, and increased in the cultivar Rubia”
Claim · model-written summary
Cultivar Rubia stood out with the highest fruit yield and ionic selectivity.
- Taxon
- sweet pepperCapsicum annuume0
- Material
- Rubiae1
- Outcome
- fruit yield and ionic selectivitye1
- Direction
- higheste1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two sweet pepper cultivars (Bruno and Rubia)”
e1“The cultivar Rubia stood out with the highest fruit yield and ionic selectivity, accumulating high amounts of potassium and calcium and maintaining low Na and Cl contents”
Claim · model-written summary
Cultivar Rubia accumulated high amounts of potassium and calcium.
- Taxon
- sweet pepperCapsicum annuume0
- Material
- Rubiae1
- Outcome
- amounts of potassium and calciume1
- Direction
- highe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two sweet pepper cultivars (Bruno and Rubia)”
e1“The cultivar Rubia stood out with the highest fruit yield and ionic selectivity, accumulating high amounts of potassium and calcium and maintaining low Na and Cl contents”
Claim · model-written summary
Cultivar Rubia maintained low Na and Cl contents.
- Taxon
- sweet pepperCapsicum annuume0
- Material
- Rubiae1
- Outcome
- Na and Cl contentse1
- Direction
- lowe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two sweet pepper cultivars (Bruno and Rubia)”
e1“The cultivar Rubia stood out with the highest fruit yield and ionic selectivity, accumulating high amounts of potassium and calcium and maintaining low Na and Cl contents”
Claim · model-written summary
Cultivar Rubia produced a fruit yield of 39.9 t ha-1 under nutrient solution with electrical conductivity of up to 3.5 dS m-1.
- Taxon
- sweet pepperCapsicum annuume0
- Material
- Rubiae1
- Outcome
- fruit yielde1
- Value
- 39.9 t ha-1e1
- Qualifier
- electrical conductivity of up to 3.5 dS m-1e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two sweet pepper cultivars (Bruno and Rubia)”
e1“The fruit yield of the cultivar Rubia (39.9 t ha-1) grown under solution with electrical conductivity of up to 3.5 dS m-1”
Claim · model-written summary
The authors conclude that growing cultivar Rubia under hydroponic conditions is potentially viable.
- Taxon
- sweet pepperCapsicum annuume0
- Outcome
- potential viability of growing this cultivar under hydroponic conditionse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two sweet pepper cultivars (Bruno and Rubia)”
e1“denotes the potential viability of growing this cultivar under hydroponic conditions”
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