Growth and physiology of maize under water salinity and nitrogen fertilization in two soils

Braz, Régis dos Santos; Lacerda, Claudivan Feitosa de; Júnior, Raimundo Nonato de Assis; Ferreira, Jorge; Oliveira, Adriana Cruz de; Ribeiro, Aureliano de Albuquerque

doi:10.1590/1807-1929/agriambi.v23n12p907-913

Cited by 19 publications

(8 citation statements)

References 25 publications

(17 reference statements)

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“…According to Figure 5A, the high-salinity water negatively affected the ear length, obtaining lower mean values (9.18 cm) than the low-salinity water (10.05 cm), with a reduction of 8.56%. This effect can be explained by the fact that salinity inhibits plant growth due to osmotic, toxic effects affecting absorption of essential nutrients and, consequently, yield components (Braz et al, 2019;Rodrigues et al, 2020).…”

Section: Resultsmentioning

confidence: 99%

Maize crop yield in function of salinity and mulch

Costa

Goes

Almeida

et al. 2021

Rev. bras. eng. agríc. ambient.

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Irrigation with saline water affects the agronomic performance of the maize crop; however, the use of vegetal mulch may mitigate salt stress and promote an increase in yield. In this way, this study aimed to evaluate the grain yield of the maize plants submitted to different water salinity levels in the presence and absence of mulch. The experiment was conducted in a randomized block design arranged in a 2 × 2 factorial scheme. The first factor was the salinity of the irrigation water (1.0 and 4.0 dS m-1) and the second, with and without mulch, and five replicates. The variables analyzed were: unhusked ear mass, husked ear mass, cob mass, straw mass, husked ear diameter, husked ear length, and yield. The irrigation water with higher electrical conductivity affects negatively the ear mass with and without straw, ear diameter and ear length. The use of vegetation cover on the soil increased the unhusked ear mass with and without straw, ear diameter and length. The water with higher salinity (4.0 dS m-1) reduces the maize grain yield but with less intensity in the presence of mulch.

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Section: Resultsmentioning

confidence: 99%

Maize crop yield in function of salinity and mulch

Costa

Goes

Almeida

et al. 2021

Rev. bras. eng. agríc. ambient.

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“…Considering that there was no restriction in A in the substomatal chamber (Figure 1C), this reduction in A may be related to nonstomatal factors, such as accumulation of Na + ions and/or Clin the chloroplasts, which causes alterations in the state of the thylakoid membranes of chloroplasts that. These alterations, in turn, induce changes in the biochemical and photochemical processes involved in photosynthesis (Braz et al, 2019), causing the CO 2 available for photosynthesis not to be synthesized during the carboxylation phase (Morais et al, 2018). The results found in this study corroborate Lima, Fernandes, Soares, Gheiy and Fernandes (2020), who observed an increase in Ci and a reduction in A with the increase in irrigation water salinity from 0.3 to 3.5 dS m -1 , in passion fruit plants.…”

Section: Resultsmentioning

confidence: 99%

Attenuation of salt stress on the physiology and production of bell peppers by treatment with salicylic acid

Veloso¹,

Lima²,

Silva³

et al. 2021

Semina: Ciênc. Agrár.

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The use of saline water for irrigation in semi-arid regions has become a reality due to the water scarcity that occurs in most of the year. In this scenario, exogenous application of salicylic acid may be a strategy to mitigate the deleterious effects of salt stress on plants and ensure the production of socioeconomically important crops in the semiarid region of Northeast Brazil, such as bell pepper. Thus, this study examines the osmoprotective effect of salicylic acid on gas exchanges, chloroplast pigments and production components of ‘All Big’ bell pepper plants irrigated with water with different saline levels. The experiment was carried out in greenhouse conditions in Campina Grande - PB, Brazil. Treatments consisted of four levels of electrical conductivity on the irrigation water (0.8, 1.6, 2.4 and 3.2 dS m-1) and four concentrations of salicylic acid (0, 1.2, 2.4 and 3.6 mM), which were distributed in a 4 × 4 factorial arrangement in a randomized block design with three replicates. Increases in irrigation water salinity from 0.8 dS m-1 resulted in changes in gas exchange and total chlorophyll levels of ‘All Big’ bell pepper plants. The estimated salicylic acid concentration of 1.7 mM reduced the effects of salinity on stomatal conductance, transpiration, CO2 assimilation rate, instantaneous carboxylation efficiency, total chlorophyll and fruit diameters. Irrigation with water of 1.8, 0.8 and 1.6 dS m-1 salinity associated with the estimated salicylic acid concentration of 1.6 mM increased the biosynthesis of chlorophylls a and b and the number of fruits, respectively, in bell pepper plants.

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“…The effect of salinization on plants is an extremely complex phenomenon that involves morphological (Targino et al, 2017;Braz et al, 2019), physiological (Lira et al, 2018) and biochemical (Simões et al, 2019) changes caused by low water availability to plants and by the toxicity of specific ions, reducing growth, development and yield of the crop.…”

Section: Introductionmentioning

confidence: 99%

Characterization and gas exchange in accessions of Saccharum complex under salinity in the Sub-middle São Francisco, Brazil

Simões

Oliveira

Silva

et al. 2021

Rev. bras. eng. agríc. ambient.

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Salinity is one of the factors that most limit agricultural yield in the Brazilian semi-arid region. In this context, the present study aimed to evaluate the leaf gas exchange and biometric characteristics of accessions of the Saccharum complex subjected to salt stress. The experiment was carried out in a greenhouse, installed at Embrapa Semiárido, in Petrolina, PE, Brazil. The experimental design was in randomized blocks, with the treatments represented by 19 accessions belonging to different genera/species, being 10 accessions of Saccharum officinarum (BGCN 6, BGCN 91, BGCN 104, BGCN 127, BCGN 90, BGCN 101, BGCN 102, BGCN 118, BGCN 125 and BGCN 122), two accessions of Saccharum spp. (BGCN 87 and BGCN 89), one accession of Saccharum hybridum (BGCN 88), one accession of Saccharum robustum (BGCN 94), four accessions of Erianthus arundinaceus (BGCN 117, BGCN 119, BGCN 120 and BGCN 123) and one accession of Miscanthus spp., with three repetitions. Biometric characteristics, chlorophyll index and leaf gas exchange of the accessions were evaluated when they were subjected to irrigation with salinized water (6.0 dS m-1). E. arundinaceus accessions (BGCN 120 and BGCN 123) showed the highest photosynthetic rate, transpiration rate, plant height and leaf length, indicating greater adaptability to salt stress and could be promising in breeding programs.

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Growth and physiology of maize under water salinity and nitrogen fertilization in two soils

Cited by 19 publications

References 25 publications

Maize crop yield in function of salinity and mulch

Maize crop yield in function of salinity and mulch

Attenuation of salt stress on the physiology and production of bell peppers by treatment with salicylic acid

Characterization and gas exchange in accessions of Saccharum complex under salinity in the Sub-middle São Francisco, Brazil

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