Abstract
Okra (Abelmoschus esculentus) is sensitive to the salinity of water and soil, a common abiotic stress in the semi-arid region of northeastern Brazil; however, such sensitivity is variable with water management in the soil-plant-atmosphere system. Thus, the objective was to evaluate the fertilization with nitrogen-potassium combinations in okra cultivated under salt stress. Photosynthetic pigments, gas exchange, growth and fruit quality were evaluated. Fertilization with N1:K1 (40% N + 40% K2O) reduced the damage caused by salt stress and increased the chlorophyll contents, while the application of N4:K4 (130% N + 100% K2O) decreased the damage caused by salt stress and increased the carotenoid contents. The combination of N:K fertilization did not affect gas exchange, however, salt stress decreased these variables. Fertilization with N2:K2 (70% N + 60% K2O) reduced the damage caused by salt stress and increased the leaf area of okra. In addition, salt stress decreased the number of fruits and increased the fresh mass of okra fruits. The N:K fertilization also reduced the damage caused by salt stress and in the soluble solids content, titratable acidity, SS/TA ratio, and ascorbic acid content. Thus, N:K fertilization can be seen as an important agronomic strategy to improve the performance of okra quality subjected to saline conditions.
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Claims 10
Claim · model-written summary
N1:K1 reduced salt damage and increased chlorophyll contents.
- Taxon
- okra
.jpg?width=60)
Abelmoschus esculentust0 - Treatment
- N1:K1 (40% N + 40% K2O)e0
- Outcome
- chlorophyll contentse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
t0“okra”
e0“Fertilization with N1:K1 (40% N + 40% K2O) reduced the damage caused by salt stress and increased the chlorophyll contents”
Claim · model-written summary
N4:K4 reduced salt damage and increased carotenoid contents.
- Taxon
- okraAbelmoschus esculentust0
- Treatment
- N4:K4 (130% N + 100% K2O)e0
- Outcome
- carotenoid contentse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“okra”
e0“application of N4:K4 (130% N + 100% K2O) decreased the damage caused by salt stress and increased the carotenoid contents”
Claim · model-written summary
N:K fertilization did not affect gas exchange.
- Taxon
- okraAbelmoschus esculentust0
- Treatment
- N:K fertilizatione0
- Outcome
- gas exchangee0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“okra”
e0“The combination of N:K fertilization did not affect gas exchange”
Claim · model-written summary
Salt stress decreased gas exchange.
- Taxon
- okraAbelmoschus esculentust0
- Treatment
- salt stresse0
- Outcome
- gas exchangee1
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“okra”
e0“salt stress decreased these variables”
e1“did not affect gas exchange”
Claim · model-written summary
N2:K2 increased okra leaf area under salt stress.
- Taxon
- okraAbelmoschus esculentuse0
- Treatment
- N2:K2 (70% N + 60% K2O)e0
- Outcome
- leaf areae0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fertilization with N2:K2 (70% N + 60% K2O) reduced the damage caused by salt stress and increased the leaf area of okra”
Claim · model-written summary
Salt stress decreased fruit number.
- Taxon
- okraAbelmoschus esculentuse0
- Treatment
- salt stresse0
- Outcome
- number of fruitse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“salt stress decreased the number of fruits and increased the fresh mass of okra fruits”
Claim · model-written summary
Salt stress increased fresh fruit mass.
- Taxon
- okraAbelmoschus esculentuse0
- Treatment
- salt stresse0
- Outcome
- fresh mass of okra fruitse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“salt stress decreased the number of fruits and increased the fresh mass of okra fruits”
Claim · model-written summary
N:K fertilization reduced salt damage to soluble solids, titratable acidity, and SS/TA ratio.
- Taxon
- okraAbelmoschus esculentust0
- Treatment
- N:K fertilizatione0
- Outcome
- soluble solids content, titratable acidity, SS/TA ratioe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“okra”
e0“The N:K fertilization also reduced the damage caused by salt stress and in the soluble solids content, titratable acidity, SS/TA ratio, and ascorbic acid content”
Claim · model-written summary
N:K fertilization reduced salt damage to ascorbic acid content.
- Taxon
- okraAbelmoschus esculentust0
- Treatment
- N:K fertilizatione0
- Outcome
- ascorbic acid contente0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“okra”
e0“The N:K fertilization also reduced the damage caused by salt stress and in the soluble solids content, titratable acidity, SS/TA ratio, and ascorbic acid content”
Claim · model-written summary
The authors recommend N:K fertilization to improve quality of salt-stressed okra.
- Taxon
- okraAbelmoschus esculentuse0
- Outcome
- important agronomic strategy to improve the performance of okra qualitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N:K fertilization can be seen as an important agronomic strategy to improve the performance of okra quality subjected to saline conditions”
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See all 19 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.