Chloroplast pigments, water relationships, and growth of bell pepper under salt stress and nitrogen

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 e...

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Published in:Comunicata Scientiae 2024-01, Vol.15, p.1-9
Main Authors: Roque, Iara Almeida, Soares, Lauriane Almeida dos Anjos, De lima, Geovani Soares, Lopes, Iracy Amelia Pereira, Silva, Luderlândio de Andrade, Dantas, Maíla Vieira, Torres, Rafaela Aparecida Frazão, de Souza, Weslley Bruno Belo
Format: Article
Language:English
Subjects:
Abiotic stress
Acclimation
Acclimatization
Agricultural production
Arid zones
Biological fertilization
Carotenoids
Chlorophyll
Chlorophyll a
Chloroplasts
Crop diseases
Electrical conductivity
Electrical resistivity
Experiments
Fertilization
Homeostasis
Irrigation
Irrigation water
Nitrogen
Pigments
Plants
Plants (botany)
Power plants
Saline water
Salinity
Salt
Semi arid areas
Semiarid lands
Semiarid zones
Vegetables
Water sources
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Summary: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.
ISSN:2179-9079
2177-5133
DOI:10.14295/CS.vl5.4120