Abstract
The use of saline water sources for irrigation in semi-arid regions is a challenge for horticultural production since plants are sensitive to salt stress conditions, thus requiring techniques that allow plant acclimation, including nitrogen fertilization. From this perspective, this study aimed to evaluate the chloroplast pigments, water relationships, and growth of bell pepper plants irrigated with saline water and subjected to nitrogen fertilization. The experiment was conducted under field conditions at the Federal University of Campina Grande, Pombal - PB, where a randomized block design was adopted with a 5 x 5 factorial arrangement corresponding to five electrical conductivity levels of irrigation water (0.3, 1, 1.7, 2.4, and 3.1 dS m-1) and five nitrogen levels (50, 75, 100,125, and 150% of the dosage recommended for the crop), with three replications. The 125 and 150% N levels provided the highest relative water contents in bell pepper plants irrigated with electrical conductivity levels of up to 1.7 dS m-1. The contents of chlorophyll a, b, total chlorophyll, carotenoids, and stem diameter of bell pepper plants decreased when fertilized with 150% N and irrigated with the electrical conductivity of 3.1 dS m-1.
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Claims 5
Claim · model-written summary
125% N gave the highest relative water content under irrigation water conductivity up to 1.7 dS m-1.
- Taxon
- bell peppere0
- Treatment
- 125e0
- Outcome
- relative water contentse0
- Direction
- higheste0
- Qualifier
- electrical conductivity levels of up to 1.7 dS m-1e0
Not reportedComparatorSetting
Verbatim
e0“The 125 and 150% N levels provided the highest relative water contents in bell pepper plants irrigated with electrical conductivity levels of up to 1.7 dS m-1.”
Claim · model-written summary
150% N gave the highest relative water content under irrigation water conductivity up to 1.7 dS m-1.
- Taxon
- bell peppere0
- Treatment
- 150% Ne0
- Outcome
- relative water contentse0
- Direction
- higheste0
- Qualifier
- electrical conductivity levels of up to 1.7 dS m-1e0
Not reportedComparatorSetting
Verbatim
e0“The 125 and 150% N levels provided the highest relative water contents in bell pepper plants irrigated with electrical conductivity levels of up to 1.7 dS m-1.”
Claim · model-written summary
chlorophyll a, b, total chlorophyll decreased with 150% N and irrigation water at 3.1 dS m-1.
- Taxon
- bell peppere0
- Treatment
- 150% Ne0
- Outcome
- chlorophyll a, b, total chlorophylle0
- Direction
- decreasede0
- Qualifier
- electrical conductivity of 3.1 dS m-1e0
Not reportedComparator
Verbatim
e0“The contents of chlorophyll a, b, total chlorophyll, carotenoids, and stem diameter of bell pepper plants decreased when fertilized with 150% N and irrigated with the electrical conductivity of 3.1 dS m-1.”
Claim · model-written summary
carotenoids decreased with 150% N and irrigation water at 3.1 dS m-1.
- Taxon
- bell peppere0
- Treatment
- 150% Ne0
- Outcome
- carotenoidse0
- Direction
- decreasede0
- Qualifier
- electrical conductivity of 3.1 dS m-1e0
Not reportedComparator
Verbatim
e0“The contents of chlorophyll a, b, total chlorophyll, carotenoids, and stem diameter of bell pepper plants decreased when fertilized with 150% N and irrigated with the electrical conductivity of 3.1 dS m-1.”
Claim · model-written summary
stem diameter decreased with 150% N and irrigation water at 3.1 dS m-1.
- Taxon
- bell peppere0
- Treatment
- 150% Ne0
- Outcome
- stem diametere0
- Direction
- decreasede0
- Qualifier
- electrical conductivity of 3.1 dS m-1e0
Not reportedComparator
Verbatim
e0“The contents of chlorophyll a, b, total chlorophyll, carotenoids, and stem diameter of bell pepper plants decreased when fertilized with 150% N and irrigated with the electrical conductivity of 3.1 dS m-1.”
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