Uso de resíduos de gesso como corretivo em solo salino-sódico

Santos, Paulo Ricardo dos; Rolim, Mário M.; Duarte, Anamaria S.; Barros, Maria de F. C.; Silva, Ênio Farias de França e

doi:10.1590/s1983-40632014000100004

Cited by 3 publications

(3 citation statements)

References 17 publications

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“…Santos et al (2014) also concluded that the leaching of Na, and salts in general, takes place after the application of mineral or residual gypsum associated with the leaching of 1 to 2.5 pore volumes. This implies that the application of larger quantities of CaSO 4 in this experiment should have led to more effective attenuation of soil sodification; however, particular attention must be given to the fact that excess RPL also leads to the leaching of colloids with the adsorbed pollutants coming from the wastewater, as observed by Vasconcelos et al (2013).…”

Section: Soil Salinity and Soil Sodicitymentioning

confidence: 99%

Soil Chemistry after Irrigation with Treated Wastewater in Semiarid Climate

Oliveira

Gloaguen

Gonçalves

et al. 2016

Rev. Bras. Ciênc. Solo

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Soil irrigation using treated wastewater in the Brazilian semiarid region is a promising practice as this area currently faces water scarcity and pollution of water resources by domestic sewage. The aim of this study was to evaluate the use of treated wastewater in drip irrigation and its effect on the chemistry of soil cultivated with squash (Cucurbita maxima Duch.) Coroa IAC and to verify whether there was an increase in soil salinity under a semiarid climate. The experiment was conducted for 123 days on a farm close to the sewage treatment plant, in a randomized block design with five treatments and four replications. The treatments consisted of two irrigation water depths (100 and 150 % of the evapotranspiration), two applications of gypsum to attenuate wastewater sodicity (0 and 5.51 g per plant), and a control treatment with no application of wastewater or gypsum. During the experiment, treated wastewater and soil gravitational water, at a depth of 0.40 m, were collected for measurement of Na Besides an increase in pH and a reduction in total N, the irrigation with wastewater reduces soil salinity of the naturally salt-rich soils of the semiarid climate. It also led to soil sodification, in spite of the added gypsum, which indicates that irrigation with wastewater might require the addition of greater quantities of gypsum to prevent physical degradation of the soil.

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Section: Soil Salinity and Soil Sodicitymentioning

confidence: 99%

Soil Chemistry after Irrigation with Treated Wastewater in Semiarid Climate

Oliveira

Gloaguen

Gonçalves

et al. 2016

Rev. Bras. Ciênc. Solo

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“…Table 3. Mean values of grain size composition, soil density and particle size of a fluvic entisol affected by salts 15 2.5 Turbidity-uT 5 1.78 Electrical conductivity -µS/cm a 25º C *** 68 pH 6.0 to 9.5 These results indicate that the use of low-cost organic inputs available on farms can satisfactorily contribute to the recovery of soils affected by salts, but the combination with gypsum may result in an even higher infiltration rate [24,25]. 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].…”

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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“…Uma variedade considerável de estudos tem sido realizada com o objetivo de encontrar formas de absorver os diversos materiais que compõem os resíduos da construção civil ao longo de sua própria cadeia. Entretanto, outros possíveis usos têm sido negligenciados suscitando a possibilidade de outras práticas ou usos, tais como aqueles propostos nos trabalhos de Lasso (2011) e de Santos (2014), voltados para práticas agronômicas.…”

Section: Introductionunclassified

Viabilidade técnica do uso de gesso reciclado da construção civil como insumo agrícola

Feitosa

Theodoro

2020

Rev. Bras. Geog. Fis.

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A disposição de resíduos de gesso sem os cuidados necessários promove a contaminação do ar, do solo e do lençol freático. Entretanto, há possibilidade de reciclagem e utilização desses materiais como insumo agrícola, os quais podem promover resultados semelhantes ao gesso agrícola no cultivo de culturas de ciclo curto. Essa pesquisa avaliou a viabilidade técnica e o custo da utilização de gesso reciclado derivado da construção civil como substitutivo ao gesso agrícola, por meio de um experimento onde se observou o seu desempenho a campo na neutralização do alumínio trocável e disponibilização de cálcio mais magnésio no solo. Também se comparou o desenvolvimento e a produtividade da cultura do milho na área experimental, que foi composta por nove tipos de tratamento com quatro repetições distribuídos de forma casualizada em 36 parcelas, totalizando uma área de 241,5m². Após o desenvolvimento completo do milho coletou-se amostras de solo de todos os tratamentos e de indivíduos em todas as parcelas, os quais foram separados e pesados. Os resultados demonstraram que o gesso reciclado, se comportou de forma semelhante ao gesso agrícola ou foi mais eficiente na neutralização do alumínio trocável e na melhoria nos índices de Capacidade de Troca Catiônica. Quanto à produção vegetal, verificamos estatisticamente que não houve diferença significativa entre as parcelas. Conclui-se que o gesso reciclado é um substituto eficiente para o gesso agrícola, mas ainda necessita de uma cadeia de reciclagem e beneficiamento que possibilite sua oferta aos agricultores a um custo menor que a do gesso agrícola. Technical feasibility of using recycled gypsum of civil construction as an agricultural inputA B S T R A C TThe disposal of gypsum waste without observing the necessary precautions can promote the contamination of the air, soil and groundwater. However, there is possibility of recycling of this material as an agricultural input promoting a similar result to the agricultural gypsum in the cultivation of crops of short cycle. The present research evaluated the technical feasibility and the cost of the use of recycled gypsum derived from the civil construction as substitutive to the agricultural gypsum derived from mineral tillage, in an experimental area where was observed the field performance of this material as an input for the exchangeable aluminum neutralization and the availability of calcium plus exchangeable magnesium in the soil. The development and productivity of maize in the experimental area were also compared with nine types of treatments and four replications distributed randomly in 36 plots, which resulted in a total area of 241.5m². After the complete development of the maize cycle, soil samples were collected from all treatments as well as from individuals in all plots that were separated and weighed. The results showed that the gypsum recycled had a similar way to the agricultural gypsum, was more efficient with regard to the neutralization of the exchangeable aluminum and the improvement in the Capacity of Cations Exchange. Regarding plant production, it was verified from statistical treatments that there was no significant difference between plots, but still needs a chain of recycling and processing that enables its offer to farmers at a lower cost than the gypsumKey words: recycled plaster, reuse of inputs and peri-urban agriculture, soil remineralizer.

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Uso de resíduos de gesso como corretivo em solo salino-sódico

Cited by 3 publications

References 17 publications

Soil Chemistry after Irrigation with Treated Wastewater in Semiarid Climate

Soil Chemistry after Irrigation with Treated Wastewater in Semiarid Climate

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

Viabilidade técnica do uso de gesso reciclado da construção civil como insumo agrícola

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