Dinâmica de íons em solo salino-sódico sob fitorremediação com Atriplex nummularia e aplicação de gesso

Santos, Monaliza Alves dos; Freire, Maria Betânia Galvão dos Santos; Almeida, Brivaldo Gomes de; Lins, Cíntia Maria Teixeira; Silva, Emanuelle M. da

doi:10.1590/s1415-43662013000400007

Cited by 13 publications

(10 citation statements)

References 18 publications

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“…In recent years, especially in Brazil, studies involving phytoremediation, in addition to its environmental relevance (MADALÃO et al, 2012;SANTOS et al, 2013b), have received great stimulus for use in agricultural areas.…”

Section: Introductionmentioning

confidence: 99%

Sulfentrazone Phytoremediation Under Field Conditions

et al. 2016

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-Phytoremediation is a technique that has been used with increasing frequency to decontaminate soils treated with herbicides that have long-term residual effects, such as sulfentrazone. The goal was to assess phytoremediation of the herbicide sulfentrazone under field conditions by the species Canavalia ensiformis and Crotalaria juncea. The treatments consisted of combinations of the plant species C. ensiformis and C. juncea plus a control treatment (with manual weeding) and four doses of the herbicide sulfentrazone. The experimental design used herein was a split-plot randomized block design with four replicates per subplot. The treatments were kept in the field for 75 days. After this period, the experimental area was again furrowed and fertilized, considering the requirements for Pennisetum glaucum, a plant used as an indicator of the presence of sulfentrazone. Thirty-four days after sowing pearl millet, the fresh and dry shoot masses of the plants were assessed. At the end of the cycle, the plant height, stem diameter, internode length, number of leaves, number of panicles, and fresh and dry panicle masses were determined. Previous cultivation of phytoremediation species C. ensiformis and C. juncea promotes sulfentrazone remediation. C. ensiformis is the most efficient species for the decontamination of the herbicide sulfentrazone under field conditions. Keywords: Green manure. Canavalia ensiformis. Crotalaria juncea. Soil decontamination. Crop succession. FITORREMEDIAÇÃO DE SULFENTRAZONE EM CONDIÇÕES DE CAMPORESUMO -A fitorremediação é uma técnica que vem sendo utilizada na descontaminação de solos tratados com herbicidas de longo efeito residual devido à sua eficiência na descontaminação. Objetivou-se avaliar a fitorremediação do herbicida sulfentrazone em campo, pelas espécies Canavalia ensiformis e Crotalaria juncea. Os tratamentos foram compostos pela combinação entre as espécies vegetais C. ensiformis e C. juncea, mais um tratamento controle (com capina manual) e quatro doses do herbicida sulfentrazone. O delineamento experimental foi blocos casualizados com parcelas subdivididas, com quatro repetições. As espécies fitorremediadoras foram mantidas no campo por 75 dias. Neste mesmo período, foi mantido o tratamento controle. Após esse período, a área experimental foi novamente sulcada e fertilizada considerando as necessidades do Pennisetum glaucum, planta utilizada como indicadora da presença de sulfentrazone. Aos 34 dias após a semeadura do P. glaucum, avaliaram-se a massa fresca e seca da parte aérea. Ao final do ciclo, determinaram-se altura, diâmetro do colmo, comprimento do entre nó, número de folhas, número de panículas, massa fresca e seca da panícula. O cultivo prévio das espécies fitorremediadoras C. ensiformis e C. juncea promove a remediação do sulfentrazone. C. ensiformis é a espécie mais eficiente na descontaminação do herbicida sulfentrazone a campo.Palavras-chave: Adubos verdes. Canavalia ensiformis. Crotalaria juncea. Descontaminação do solo. Sucessão de culturas.

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Section: Introductionmentioning

confidence: 99%

Sulfentrazone Phytoremediation Under Field Conditions

et al. 2016

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“…The mean values of soluble cations can be considered very high (Table 1) comparing to those found by Santos et al (2013b) in a Fluvic Cambisol and by Melo et al (2008) in a Fluvic Neosol all salinized in the semi-arid region of Brazil. Similar to results found in previous studies we found that the concentrations of cations in soil solution was in Na>Ca>Mg>K order.…”

Section: Descriptive and Spatial Statistical Analysesmentioning

confidence: 80%

“…The excess of soluble salts should be removed by a soil washing and some underground drains should be built, so that the excess water from rainfall or irrigation can be removed. In an experiment carried out by Santos et al (2013b) phytoremediation with Atriplex nummularia (halophyte plant adapted to the semi-arid region of Brazil) showed to be alternatively efficient in reducing the levels of salts in the soil in a saline-sodium soil in the state of Pernambuco. It assists in maintaining soil structure (expansion of the area occupied by the roots) and contributes to carbon sequestration, besides being a great alternative source of protein for ruminants.…”

Section: Practical Implications Of Salinity Mappingmentioning

confidence: 99%

Spatial analysis of soil salinity in a mango irrigated area in semi-arid climate region

Rodrigues¹,

Alves²,

Cunha³

et al. 2018

Aust J Crop Sci

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The salinization of irrigated areas in the semi-arid region of Brazil causes major problem for fruit production. Defining the spatial distribution of soil salinity provides important insight technique for improving the management of irrigated fruit-production areas. This work aimed to (1) assess the spatial distribution of soil salinity and (2) delineate management zones in an irrigated mango orchard in the semi-arid region based on soil salinity data. The experimental site in Juazeiro County, Bahia state, Brazil was defined by two sample grids, one under the canopy of the mango trees and the other in the row spacing with 96 georeferenced points spaced 8 x 8 m apart. Disturbed-soil cores were taken from the 0 to 0.2 m layer at each point. Soil texture, electrical conductivity (EC), exchangeable cations, and soluble cations were determined. Data were analyzed using descriptive data and geostatistical analysis. Soil salinity showed spatial dependence for samples collected in the row spacing of the mango trees. Exchangeable Na, and soluble Na, Ca, and Mg were the attributes that best defined the spatial distribution of soil salinity. Three management zones in the studied area were defined based on soil EC values, in which 63% classified as salic, 34% saline and 3% non-saline. This study clearly shows that soil-salinity problems associated with the development of mango plants may be due to an accumulation of salts in the spacing region between the plants.

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“…The use of gypsum together with an organic matter source has shown good results both for crops and for the process of improving the physical-water conditions [26,27,28]. Previous studies have also indicated that the addition of crop residues to the soil can improve several aspects of a saline-sodic soil, such as water infiltration rate [29].…”

Section: Resultsmentioning

confidence: 99%

Use of Maize Straw or Animal Manure as an Alternative to Gypsum to Ameliorate Saline-Sodic Soils

Jesus

Althoff

Pérez-Marin

et al. 2019

JEAI

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This work aimed to evaluate the effect of the addition of animal manure or maize straw, combined or not with gypsum, on the recovery of the productive capacity of a Fluvic Entisol affected by salts cultivated with maize (Zea mays L.). The experiment was conducted in a greenhouse, in PVC columns in a 10 x 4 factorial scheme, with ten treatments and four replicates (gypsum, 15 t ha-1 manure, 30 t ha-1 manure, 15 t ha-1 maize straw, 30 t ha-1 maize straw, 15 t ha-1 gypsum plus manure, 30 t ha-1 gypsum plus manure, 15 t ha-1 gypsum plus maize straw, 30 t ha-1 gypsum plus maize straw and control, no input) in a randomized block design. Soils that received maize straw increased both the soil water infiltration rate and the amount of salts leached at the bottom of the column compared to soils that received gypsum. However, maize straw reduced the growth of maize plants, probably due to the immobilization of nutrients. In soils that received 15 t ha-1 manure, the growth of maize plants was higher compared to soils that received gypsum, indicating that the application and organic inputs can improve soil physical conditions, reduce salinity and promote plant growth without the need for the acquisition of gypsum, which gives farmers more autonomy and reduces costs.

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Dinâmica de íons em solo salino-sódico sob fitorremediação com Atriplex nummularia e aplicação de gesso

Cited by 13 publications

References 18 publications

Sulfentrazone Phytoremediation Under Field Conditions

Sulfentrazone Phytoremediation Under Field Conditions

Spatial analysis of soil salinity in a mango irrigated area in semi-arid climate region

Use of Maize Straw or Animal Manure as an Alternative to Gypsum to Ameliorate Saline-Sodic Soils

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