Photochemical efficiency and growth of sugar apple under irrigation with saline water and foliar nitrogen

Salt stress has compromised the worldwide expansion of fruit farming by causing damage to light energy regulation and crop growth, which can be mitigated by applying foliar nitrogen (N). From this perspective, this study aimed to evaluate the chlorophyll contents, fluorescence, and the growth of sug...

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Published inComunicata Scientiae Vol. 14; pp. e4020 - 9
Main Authors De Fatima, Reynaldo Teodoro, Nóbrega, Jackson Silva, Ferreira, Jean Télvio Andrade, Celedônio, Wilma Freitas, Ribeiro, João Everthon da Silva, Pereira, Walter Esfrain, Antônio Gustavo de Luna Souto, Lima, Geovani Soares de
Format Journal Article
LanguageEnglish
Published Bom Jesus Comunicata Scientiae 2023
Subjects
Abiotic stress
Agricultural production
Apples
Chlorophyll
Chlorophylls
Crop growth
Design
Efficiency
Electrical conductivity
Electrical resistivity
Fertilization
Fluorescence
Foliar applications
Fruits
Irrigation
Irrigation water
Metabolism
Metabolites
Nitrogen
Osmosis
Photochemicals
Photochemistry
Physiology
Plant growth
Polyethylene
Saccharides
Saline water
Salinity
Salinity effects
Salt
Seedlings
Seeds
Sugar
Water salinity
Brazil
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Summary:Salt stress has compromised the worldwide expansion of fruit farming by causing damage to light energy regulation and crop growth, which can be mitigated by applying foliar nitrogen (N). From this perspective, this study aimed to evaluate the chlorophyll contents, fluorescence, and the growth of sugar apple seedlings under irrigation with saline water and foliar N fertilisation. The experiment was conducted in a plant nursery and following a randomized block design referring to five electrical conductivity levels of irrigation water (0.5, 1.15, 2.75, 4.35, and 5.0 dS m-1) and five foliar N levels (0.0, 0.33, 1.15, 1.97, and 2.3 g L-1), with four replications and two plants per plot, totaling nine combinations generated by the Box central composite design. Irrigation water salinity reduces the growth of sugar apple seedlings irrigated with conductivity levels over 1.7 dS m-1 at 90 days after emergence. Foliar N fertilisation increased the photochemical efficiency and growth of sugar apple seedlings. The foliar application of 1.93 g L-1 mitigate the deleterious effects of water salinity on the photochemical efficiency and growth of sugar apple seedlings.
ISSN:2176-9079
2179-9079
2177-5133
DOI:10.14295/cs.v14.4020