Organic fertilization and salt stress on the agronomic performance of maize crop

Freire, Márcio Henrique da Costa; Viana, Thales Vinícius de Araújo; Sousa, Geocleber Gomes de; Azevedo, Benito Moreira de; Sousa, Henderson Castelo; Goes, Geovana Ferreira; Lessa, Carla Ingryd Nojosa; Silva, Fred Denílson Barbosa da

doi:10.1590/1807-1929/agriambi.v26n11p848-854

Cited by 2 publications

(1 citation statement)

References 23 publications

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“…Studies by [61] using maize seeds inoculated with 'Graminante ® ', a commercial biotechnological product based on Azospirillum spp., and irrigated with low-salinity water, returned similar results to the present study for ear length. [62] also found a reduction in ear length in maize plants irrigated with brackish water with an electrical conductivity of 3.0 dS m -1 under field conditions, when studying the effect of poultry biofertiliser -a mixture of live microorganisms (bacteria, yeasts, algae and filamentous fungi), which, when made available to plants through various methods, colonise the rhizosphere and/or the interior of the plant, and promote growth by increasing the supply of primary nutrients [63].…”

Section: Yieldmentioning

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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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: Yieldmentioning

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

View full text Add to dashboard Cite

show abstract

Bacillus aryabhattai Mitigates the Effects of Salt and Water Stress on the Agronomic Performance of Maize under an Agroecological System

Sousa

Viana

et al. 2023

Agriculture

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The use of plant-growth-promoting rhizobacteria (PGPR) can be one option for mitigating the impact of abiotic constraints on different cropping systems in the tropical semi-arid region. Studies suggest that these bacteria have mechanisms to mitigate the effects of water stress and to promote more significant growth in plant species. These mechanisms involve phenotypic changes in growth, water conservation, plant cell protection, and damage restoration through the integration of phytohormone modulation, stress-induced enzyme apparatus, and metabolites. The aim of this study was to evaluate the growth, leaf gas exchange, and yield in maize (Zea mays L.—BRS Caatingueiro) 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 of the irrigation water (0.3 dS m−1 and 3.0 dS m−1); the subplots consisted of three irrigation depths (50%, 75%, and 100% of the crop evapotranspiration (ETc)); while the sub-subplots included the presence or absence of B. 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 B. 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. Our results showed that inoculation wiht PGPR mitigates the effect of abiotic stress (salt and water) in maize plants, making it an option in regions with a scarcity of low-salinity water.

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Organic fertilization and salt stress on the agronomic performance of maize crop

Cited by 2 publications

References 23 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

Bacillus aryabhattai Mitigates the Effects of Salt and Water Stress on the Agronomic Performance of Maize under an Agroecological System

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