Efeito do Ca2+ externo no conteúdo de Na+ e K+ em cajueiros expostos a salinidade

Alves, Francisco Abel Lemos; Ferreira‐Silva, Sérgio Luiz; Silveira, Joaquim Albenísio Gomes da; Pereira, Vanda Lúcia Arcanjo

doi:10.5039/agraria.v6i4a1257

Cited by 18 publications

(23 citation statements)

References 14 publications

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“…According to Alves et al (2011) one of the mechanisms of resistance to excess of Na + in plants is to maintain adequate potassium nutrition in plant tissues, which occurred in the present work, where K + contents were above the critical level. The selectivity of the root system for K + over Na + should be sufficient to satisfy K + contents required for the metabolic processes, ion transport regulation and osmotic adjustment (Munns & Tester, 2008).…”

Section: Levels Of Namentioning

confidence: 60%

“…This fact explains the Na + accumulation in roots as it can be observed in several studies (Lacerda et al, 2004, Alves et al, 2011Krishnasamy et al, 2014). Krishnasamy et al (2014) found a reduction in the K + /Na + ratio in wheat plants of different cultivars when Na + was added in the soil.…”

Section: Levels Of Namentioning

confidence: 63%

“…These authors also verified that in the presence of insufficient K + , Na + stimulates a better development of plants, eliminating the symptoms of K + deficiency. Alves et al (2011) also observed a reduction in the K + /Na + ratio in cashew plants in the presence of Na + , however when external Ca 2+ was applied this relation did not decrease significantly when compared to control plants.…”

Section: Levels Of Namentioning

confidence: 92%

“…The responses of the plants exposed to Na + by the application of external Ca 2+ results in an increase in the degree of resistance due to the excess of cations (Alves et al, 2011). Lacerda et al (2004) evaluated the influence of Ca 2+ on the growth of sorghum seedlings under a saline environment and verified that the increase of Ca 2+ in the solution favored the development of sorghum seedlings.…”

Section: Development and Productionmentioning

confidence: 99%

“…The selectivity of the root system for K + over Na + should be sufficient to satisfy K + contents required for the metabolic processes, ion transport regulation and osmotic adjustment (Munns & Tester, 2008). One of the beneficial effects of the addition of calcium in the root environment of plants exposed to Na + excess is associated with the maintenance of the integrity of the membranes of the cells that favors the best control in the absorption and maintenance of K + (Lacerda et al, 2004;Alves et al, 2011).…”

Section: Levels Of Namentioning

confidence: 99%

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Mombaça Grass Responds to Partial Replacement of K+ by Na+ with Supplemental Ca2+ Addition in Low Fertility Soil

Carneiro¹,

Silva²,

Santos³

et al. 2017

JAS

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Partial replacement of potassium by sodium may be an alternative to reduce the cost of pasture fertilization and reduce the dependence on imported potassium sources. The objective of this study was to evaluate different sources and doses of calcium as enhancers of sodium effect on the partial replacement of potassium by sodium. Here, Mombaça grass (Megathyrsus maximus) was grown on low fertility soil. The experiment was conducted in a factorial (3 × 5) based on a completely randomized design with 4 replications as follow: three sources of Ca ) and two additional treatments (fertilization with 100% of K + without application of Ca 2+ and one control without any fertilization). Potassium was partially replaced (25%) by Na + prior to Ca 2+ additions. Plant height, growth rate, dry weight, Na + , K + , K + /Na + and shoot proline contents were evaluated as well as Na + levels and the electrical conductivity of the soil. The results show that the addition of Ca 2+ provided better plant development when K + was partially replaced by Na + and that the supply of Ca 2+ reduced the absorption of sodium by plants. The partial replacement of K + by Na + did not increase soil salinity or caused stress to the plants.

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Section: Levels Of Namentioning

confidence: 60%

Section: Levels Of Namentioning

confidence: 63%

Section: Levels Of Namentioning

confidence: 92%

Section: Development and Productionmentioning

confidence: 99%

Section: Levels Of Namentioning

confidence: 99%

See 3 more Smart Citations

Mombaça Grass Responds to Partial Replacement of K+ by Na+ with Supplemental Ca2+ Addition in Low Fertility Soil

Carneiro¹,

Silva²,

Santos³

et al. 2017

JAS

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Impacts on growth, water relations and nutritional composition of basil plants submitted to irrigation with saline and wastewater

Bressan

Capelin²,

Gomes

et al. 2020

SN Appl. Sci.

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The effect of the application of reclaimed water and saline water on physiological parameters in Ocimum basilicum L. plants were studied to evaluate their adaptability to irrigation with saline water, as well as to evaluate the applicability of wastewater as a source for irrigation. Plants of O. basilicum grown under greenhouse conditions were submitted to different irrigation treatments: control (deionized water 3.10-6 dS m −1), deionized water supplemented with 15 mM NaCl (1.70 dS m −1), deionized water supplemented with 30 mM NaCl (2.46 dS m −1) and ozonized reclaimed water (0.709 dS m −1). The results show that reclaimed water did not promote reduction in water potential of leaf. Likewise, growth-related parameters were not affected by the application of this treatment. The analysis of nutrients composition in the vegetal tissues verified a marked effect of the Na + exclusion in the root tissues. It did not happen occurred in the roots with the same proportion as in the foliar tissues. Considering the results, the ozonized reclaimed water (0.709 dS m −1) can be an alternative for irrigation of O. basilicum L., if it is properly managed.

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Yield and phosphorus use efficiency of carrot cultivars

Jesus

Grangeiro

Sousa³

et al. 2021

Biosci. J.

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Phosphate fertilization is indispensable for carrot cultivation, as it contributes to plant development, formation of marketable roots and higher yields. In this context, the objective of this study was to evaluate the production and nutritional efficiency of carrot cultivars under phosphate fertilization. The experiments were carried out from July to November 2016 and from June to October 2017, at the Rafael Fernandes experimental farm, District of Alagoinha, Mossoró, RN, Brazil. The experimental design was in randomized blocks, in a 4×4 factorial scheme with 4 replicates. The treatments consisted of the combination of carrot cultivars (Brasília, Planalto, Suprema and Nativa) with phosphorus (P) doses (0, 90, 180 and 270 kg ha-1 P2O5). The characteristics analyzed were: P content in the diagnostic leaf, plant dry matter, plant height, marketable and total yields, and the classification of cultivars for efficiency and response to phosphate fertilization. The increments promoted by phosphate fertilization were 64% in plant height, 444% in dry matter and 284% in marketable yield. The maximum marketable yield was obtained with doses from 186.8 to 243.5 kg ha-1, depending on the cultivar. The Native cultivar was classified as more efficient in the use of P.

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Efeito do Ca2+ externo no conteúdo de Na+ e K+ em cajueiros expostos a salinidade

Cited by 18 publications

References 14 publications

Mombaça Grass Responds to Partial Replacement of K+ by Na+ with Supplemental Ca2+ Addition in Low Fertility Soil

Mombaça Grass Responds to Partial Replacement of K+ by Na+ with Supplemental Ca2+ Addition in Low Fertility Soil

Impacts on growth, water relations and nutritional composition of basil plants submitted to irrigation with saline and wastewater

Yield and phosphorus use efficiency of carrot cultivars

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