Physiological indices of okra under organomineral fertilization and irrigated with salt water

Sales, Jonnathan Richeds da Silva; Magalhães, Clarissa Lima; Freitas, Ana Gabriela Sousa; Goes, Geovana Ferreira; Sousa, Henderson Castelo; Sousa, Geocleber Gomes de

doi:10.1590/1807-1929/agriambi.v25n7p466-471

Cited by 11 publications

(12 citation statements)

References 14 publications

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“…It can be seen from Figure 8, that the internal CO2 concentration was higher when the maize was irrigated with water of lower salinity (0.3 dS m -1 ), demonstrating the negative effects of salt stress, which interferes in the osmotic, toxic and nutritional processes, and affects net CO2 assimilation [17]. Similar trends were observed by [53] studying salt stress in okra, where an increase in the electrical conductivity of the irrigation water promoted a reduction in the internal CO2 concentration. The same authors confirm that salt stress induces partial stomatal closure as an attempt by the plant to minimise water loss, which in return reduces the entry of CO2 from the atmosphere into the leaf mesophyll and, since no exchange takes place, reduces its concentration in the substomatal cavity.…”

Section: Source Ofsupporting

confidence: 63%

“…Following the trend for transpiration under salt stress, leaf temperature gradually increased. It should be noted that plants under salt stress show great difficulty in absorbing water from the soil; as such, there is an increase in internal temperature, since water helps in the thermal regulation of plants, even under conditions of high transpiration [38][39][40][41][42][43][44][45][46][47][48][49][50][51][52][53][54][55]. It is worth noting that transpiration via movement of the stomata helps in reducing leaf temperature (cooling), which is crucial during the day when the leaf absorbs large amounts of energy from the sun [38].…”

Section: Source Ofmentioning

confidence: 99%

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Bacillus aryabhattai Mitigates the Effects of Salt and Water Stress on the Agronomic Performance of Maize Under an Agroe-Cological System

Sousa¹,

Sousa²,

Viana³

et al. 2023

Preprint

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The use of plant growth-promoting bacteria can be one option for mitigating the impact of abiotic constraints on different cropping systems in the tropical semi-arid region. The aim of this study was to evaluate growth, leaf gas exchange and yield in maize inoculated with Bacillus aryabhattai, and subjected to water and salt stress. The experiment followed a randomised block design, in a split plot arrangement, with six repetitions. The plots comprised two levels of electrical conductivity for the irrigation water (ECw): 0.3 dS m-1 and 3.0 dS m-1; the subplots consisted of three irrigation depths (ID1: 50%, ID2: 75%, and ID3: 100% of the crop evapotranspiration (ETc)); while the sub-subplots included the presence or absence of Bacillus aryabhattai inoculant. A water deficit of 50% of the ETc resulted in the principal negative effects on growth, reducing the leaf area and stem diameter. The use of Bacillus aryabhattai mitigated salt stress and promoted better leaf gas exchange by increasing the CO2 assimilation rate, stomatal conductance, and internal CO2 concentration. However, irrigation with brackish water (3.0 dS m-1) reduced the instantaneous water use efficiency of the maize. Inoculation partially reduced the effects of abiotic stress due to morpho-physiological traits, and increased yield potential under water deficit with no salt stress.

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Section: Source Ofsupporting

confidence: 63%

Section: Source Ofmentioning

confidence: 99%

Bacillus aryabhattai Mitigates the Effects of Salt and Water Stress on the Agronomic Performance of Maize Under an Agroe-Cological System

Sousa¹,

Sousa²,

Viana³

et al. 2023

Preprint

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“…Nesse sentido, Sales et al (2021) visando combater os impactos da salinidade na água de irrigação sobre o cultivo do quiabeiro, avaliaram os índices fisiológicos dessa cultura cultivado sob adubação organomineral e irrigado com água de condutividade elétrica de 0,5 e 5,0 dS m -1 . Os autores relataram em seus resultados que apesar do estresse salino impactar negativamente os índices fisiológicos do quiabo, a fertilização organomineral mitigou de forma moderada esses efeitos.…”

Section: Simões Et Al (unclassified

Salinização secundária no semiárido e seus impactos no solo, na agricultura e cultivo das plantas – uma revisão

Filho

Bonilla

2022

RSD

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A salinização do solo pode ocorrer de forma antropogênica ou secundária ou como resultado de processos naturais a exemplo da intemperização dos minerais ou até mesmo pelo aumento da capilaridade das águas subterrâneas mais salinas em regiões com lençol freático mais baixo. Entre as fontes antropogênicas de salinização do solo se destacam atividades industriais como a exploração de petróleo, a mineração e destacando-se ainda as práticas agrícolas não sustentáveis. A implantação de sistemas de irrigação no semiárido muitas vezes promovem mudanças que resultam no acúmulo de sais na superfície do solo, ascensão do lençol freático e contaminação dos recursos hídricos impactando a dinâmica ambiental daquele local. Diante disso esta revisão de literatura teve como objetivo abordar os principais impactos relacionados com a salinização secundária e seus efeitos nas propriedades do solo, analisando-se ainda o cultivo em condições salinas de culturas de importância agrícola e seus impactos sobre o desenvolvimento das plantas. Esse trabalho foi direcionado por um levantamento bibliográfico que agrupou temas importantes sobre salinização secundária do solo e o cultivo de culturas resistentes a esse tipo de ambiente. Com base nos resultados obtidos nessa revisão, conclui-se que a irrigação com água de baixa qualidade tem se apresentado como alternativa para a produção agrícola, principalmente para culturas que tem se mostrado resistentes a solos salinizados e que pode representar uma importante alternativa para regiões com escassez de água.

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“…The edaphoclimatic conditions of the arid and semi-arid regions can cause water scarcity and an increase in the salt content of water. Thus, aiming at the continuity of sustainable exploitation in these areas, most agricultural producers use saline groundwater/surface water for irrigating crops (LIMA et al, 2015;SANTOS et al, 2016;SALES et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Hydrogen peroxide in the acclimation of colored-fiber cotton genotypes to salt stress

et al. 2023

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The excess of salts in irrigation water restricts agricultural exploitation in arid and semi-arid regions. Thus, searching for strategies of cultivation under salt stress conditions is important for the expansion of irrigated agriculture in these regions. Thus, the objective of this study was to evaluate the gas exchange and growth rates of naturally colored-fiber cotton genotypes irrigated with saline water and under exogenous foliar application of hydrogen peroxide concentrations. The experiment was carried out under greenhouse conditions, in Campina Grande - PB, using the randomized block experimental design and 4 × 3 × 2 factorial arrangement, with four concentrations of hydrogen peroxide - H2O2 (0, 25, 50, and 75 µM), three colored-fiber cotton genotypes - CG (BRS Rubi; BRS Topázio; BRS Verde) and two levels of electrical conductivity of water - ECw (0.8 and 5.3 dS m-1), with three replicates. Irrigation using water with electrical conductivity of 5.3 dS m-1 associated with foliar application of 50 µM of hydrogen peroxide favors gas exchange and growth rates of BRS Rubi cotton, at 60 days after sowing. Salinity of 5.3 dS m-1 associated with foliar applications of 50 µM of hydrogen peroxide increased the percentage of cell damage and the internal CO2 concentration, but reduced the stomatal conductance, transpiration, CO2 assimilation rate, and growth rates of BRS Topázio cotton.

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Physiological indices of okra under organomineral fertilization and irrigated with salt water

Abstract: HIGHLIGHTS Salt water reduces gas exchange in the okra crop, but organomineral fertilization mitigates these effects. The use of organic and mineral fertilization is viable in okra crops under salt stress. Organic fertilizer (100% bovine biofertilizer) decreases internal CO2 concentration.

Cited by 11 publications

References 14 publications

Bacillus aryabhattai Mitigates the Effects of Salt and Water Stress on the Agronomic Performance of Maize Under an Agroe-Cological System

Bacillus aryabhattai Mitigates the Effects of Salt and Water Stress on the Agronomic Performance of Maize Under an Agroe-Cological System

Salinização secundária no semiárido e seus impactos no solo, na agricultura e cultivo das plantas – uma revisão

Hydrogen peroxide in the acclimation of colored-fiber cotton genotypes to salt stress

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