Componentes de Produção do Feijão-Caupi Irrigado com Água Salina e Adubação Nitrogenada

Furtado, G.F.; Soares, L.A.A.; Andrade, Elysson Marcks Gonçalves; Sousa, Jônatas Raulino Marques de; Lima, Giuseppe; Costa, W.M.

doi:10.12702/ii.inovagri.2014-a030

Cited by 2 publications

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“…However, the highest iCE observed at salinity of 0.5 dS m -1 is an indication that the damage to the photosynthetic apparatus occured due to stomatic and non-stomatic factors, through biochemical changes However, the highest iCE observed at salinity of 0.5 dS m -1 is an indication that the damage to the photosynthetic apparatus occured due to stomatic and non-stomatic factors, through biochemical changes However, the highest iCE observed at salinity of 0.5 dS m -1 is an indication that the damage to the photosynthetic apparatus occured due to stomatic and non-stomatic factors, through biochemical changes affecting the energy supply and rubisco enzyme activity (Sá et al, 2019). In cowpea (Vigna unguiculata L.) and castor bean (Ricinus communis L.) plants, the interaction between nitrogen fertilization and irrigation water salinity did not influence the gas exchange of these species (Furtado, Soares, Sousa, Andrade, & Guerra, 2013;Soares, Lima, Nobre, Gheyi, & Pereira, 2013), and this is contrary to the result obtained in the present study. For potassium, the optimal dose of this nutrient depends on the soil salt level in the root zone and the source used in fertilization (Prazeres et al, 2015).…”

Section: Resultscontrasting

confidence: 99%

“…affecting the energy supply and rubisco enzyme activity (Sá et al, 2019). In cowpea (Vigna unguiculata L.) and castor bean (Ricinus communis L.) plants, the interaction between nitrogen fertilization and irrigation water salinity did not influence the gas exchange of these species (Furtado, Soares, Sousa, Andrade, & Guerra, 2013;Soares, Lima, Nobre, Gheyi, & Pereira, 2013), and this is contrary to the result obtained in the present study. For potassium, the optimal dose of this nutrient depends on the soil salt level in the root zone and the source used in fertilization (Prazeres et al, 2015).…”

Section: Resultscontrasting

confidence: 99%

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Morphophysiology of yellow passion fruit seedlings under application of nitrogen and potassium and irrigation with high-salinity water

Figueiredo

Nóbrega

Fátima

et al. 2020

Semina: Ciênc. Agrár.

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Salinity is one of the most problematic abiotic stresses in agriculture globally, especially in semi-arid regions. Thus, the application of nutrients, such as nitrogen and potassium to improve plant nutritional conditions may be a viable alternative to minimize the negative effects of saline stress. Therefore, the aim of this study was to evaluate the morphophysiological behavior of yellow passion fruit seedlings under varying nitrogen and potassium doses and irrigation with salt water. The experimental design was a randomized complete block with a 5 x 5 incomplete factorial scheme, generated from the Central Composite Design with five electrical conductivities of irrigation water (0.5, 0.98, 2.15, 3.32, and 3. 80 dS m-1) and five increasing doses of nitrogen and potassium (0.0, 29.08, 100.0, 170.92, and 200.0%). Leaf, stem, and root dry phytomass and gas exchange were evaluated 75 days after sowing. The increase in salinity had negative effects on the morphological and physiological characteristics of yellow passion fruit seedlings. The application of nitrogen and potassium positively influenced photosynthetic rate and leaf and root dry phytomasses. The application of nitrogen and potassium increased intercellular CO2 concentration and transpiration in yellow passion fruit seedlings under saline stress.

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Section: Resultscontrasting

confidence: 99%

Section: Resultscontrasting

confidence: 99%

Morphophysiology of yellow passion fruit seedlings under application of nitrogen and potassium and irrigation with high-salinity water

Figueiredo

Nóbrega

Fátima

et al. 2020

Semina: Ciênc. Agrár.

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“…Scalon et al (2015) also observed reduced carboxylation efficiency limited by Rubisco, in Hancornia speciosa seedlings submitted to water deficit. In the same sense, when studying bean plants under salinity stress and nitrogen fertilization, Furtado et al (2013) state that the iCE reduction occurred mainly due to decreased photosynthetic rates. The water-use efficiency showed similar behavior to the stomatal conductance patterns, presenting its highest values during the first periods of the day, reaching its maximum peak at 11:00 a.m. (2.15 µmol CO2 mol H2O -1 ) and decreasing in the following hours (Fig 6C).…”

Section: Gas Exchangementioning

confidence: 97%

Gas exchanges in sugar apple (Annona squamosa L.) subjected to salinity stress and nitrogen fertilization

et al. 2019

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Salinity is one of the modern agriculture major obstacles, causing several physiological disturbances in plants, adversely affecting its growth and development. Therefore, some techniques are required in order to alleviate the negative effects of salinity stress on plants, as for example an adequate nitrogen fertilization. The aim of this study was to assess the ecophysiological responses of sugar apple plants (Annona squamosa L.) submitted to different salinity levels and nitrogen fertilization doses. The experimental design was a randomized block in an incomplete factorial scheme, with five electrical conductivities of the irrigation water (ECw: 0.5, 1.01, 2.25, 3.49 and 4.0 dS m-1) and five nitrogen doses (0, 101, 350, 598.2 and 700 mg dm-3), with four replicates, generated from the Box Central Composite experimental design matrix. Through a daily course, it was observed variations in gas exchange, chlorophyll content and fluorescence parameters. The gas exchange, chlorophyll content and fluorescence parameters were measured on photosynthetically active leaves. There was significant interaction between the salinity levels (ECw) and nitrogen doses for the chlorophyll indexes. The electrical conductivity of the irrigation water caused significant negative effects on chlorophyll fluorescence. Therefore, it can be stated that the sugar apple plants ecophysiology varies through the day and that salinity affects its chlorophyll content and fluorescence.

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Componentes de Produção do Feijão-Caupi Irrigado com Água Salina e Adubação Nitrogenada

Cited by 2 publications

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Morphophysiology of yellow passion fruit seedlings under application of nitrogen and potassium and irrigation with high-salinity water

Morphophysiology of yellow passion fruit seedlings under application of nitrogen and potassium and irrigation with high-salinity water

Gas exchanges in sugar apple (Annona squamosa L.) subjected to salinity stress and nitrogen fertilization

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