Growth and fiber quality of colored cotton under salinity management strategies

Soares, Lauriane Almeida dos Anjos; Fernandes, Pedro Dantas; Lima, Geovani Soares de; Suassuna, Janivan Fernandes; Brito, Marcos Eric Barbosa; Sá, Francisco Vaniés da Silva

doi:10.1590/1807-1929/agriambi.v22n5p332-337

Cited by 21 publications

(13 citation statements)

References 17 publications

(16 reference statements)

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“…Salt accumulation in the soil caused by irrigation salinity is responsible for the ionic effect in plants, characterized by the increase in the Na + : NH 4 + ratio and generating a nutrient imbalance caused by the competition between sodium and nitrogen (Soares et al, 2018).…”

Section: Resultsmentioning

confidence: 99%

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

Roque,

Soares,

Lima

et al. 2024

Com. Sci.

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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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Section: Resultsmentioning

confidence: 99%

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

Roque,

Soares,

Lima

et al. 2024

Com. Sci.

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“…Excess salts in the water reduce the osmotic potential of the soil solution, affecting water availability and causing ionic effect and changes in soil physical and chemical properties (SOARES et al, 2018). In addition, excessive presence of salts in the root zone of plants can negatively affect cell membrane integrity, limiting the photosynthetic process due to the partial stomatal closure, resulting in damage to the photosynthetic apparatus and/or the enzymatic system of CO 2 fixation, regardless of the nature of the salts (VELOSO et al, 2020a).…”

Section: Introductionmentioning

confidence: 99%

Hydrogen peroxide in attenuating salt stress in soursop

Capitulino,

Lima,

Azevedo

et al. 2024

Rev. Caatinga

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In semi-arid regions, the use of saline water for irrigation has become an increasingly frequent reality due to the qualitative and quantitative scarcity of water sources occurring most of the year. Thus, the use of hydrogen peroxide can be a strategy capable of mitigating the deleterious effects of salt stress on plants and guaranteeing the agricultural production of crops such as soursop. Thus, the objective of this study was to evaluate the effects of foliar application of hydrogen peroxide on the physiological and growth indices of soursop plants cv. Morada Nova irrigated with waters of different salinity levels. The treatments were distributed in a randomized block design, in a 4 × 4 factorial scheme, corresponding to four levels of electrical conductivity of irrigation water and four concentrations of hydrogen peroxide, with three replicates. Foliar application of hydrogen peroxide at concentrations of 12, 18 and 15 µM, respectively, attenuated the effects of salt stress on stomatal conductance, CO2 assimilation rate and chlorophyll a synthesis of soursop, at 780 days after transplanting. The 30 µM hydrogen peroxide concentration intensified salt stress on gas exchange, variable fluorescence and electrolyte leakage in the leaf blade of soursop plants cv. Morada Nova, 780 days after transplanting.

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“…The Northeast region of Brazil has stood out as the largest passion fruit producer, accounting for 69.6% of the 683,993 tons produced in 2021 (IBGE, 2022). However, this region is characterized by irregular rainfall and high evaporation rates, limiting water availability during the crop cycle and causing losses in production and fruit quality (Lima et al, 2015;Soares et al, 2018;Pinheiro et al, 2022a).…”

Section: Introductionmentioning

confidence: 99%

Salicylic acid concentrations and forms of application mitigate water stress in sour passion fruit seedlings

et al. 2023

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The present study aimed to evaluate concentrations and forms of application of salicylic acid used for water stress mitigation on the gas exchange and growth of yellow passion fruit. The experimental design was arranged in randomized blocks in a 4 × 4 × 2 factorial scheme, with four concentrations of salicylic acid (SA) via foliar application (0.0, 0.7, 1.4, and 2.1 mM), four SA concentrations via fertigation (0.0, 0.7, 1.4, and 2.1 mM), and two irrigation depths estimated based on the actual evapotranspiration - ETr (50 and 100% of ETr), with three replications. Water stress negatively affected the physiology and growth of yellow passion fruit seedlings at 75 days after sowing (DAS). The application of salicylic acid, regardless of the form of application, attenuates the effects of water stress on gas exchange and growth of yellow passion fruit, with the best results obtained when applying a concentration of 1.30 mM via leaf or 0.90 mM via fertirrigation. The combination of foliar application of AS and fertigation contributed to improve photosynthetic and growth parameters under water conditions of 50 and 100% of ETr. The foliar application of AS presents superior responses to the application via fertigation. These results reinforce the hypothesis that the attenuation of water stress by salicylic acid is related to the maintenance of gas exchange, which depends on the concentration and form of application, and studies testing combinations throughout the crop cycle become promising for advances in knowledge from the action of this phytohormone on abiotic stress.

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Growth and fiber quality of colored cotton under salinity management strategies

Cited by 21 publications

References 17 publications

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

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

Hydrogen peroxide in attenuating salt stress in soursop

Salicylic acid concentrations and forms of application mitigate water stress in sour passion fruit seedlings

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