Enxofre elementar ou sulfato de cálcio para remediação de solos salino-sódicos?

Rocha, Josinaldo Lopes Araújo; Severo, Pedro Jorge da Silva; Lucena, Francisco Tarcísio; Veriato, Rafael Guimarães.; Paiva, Kariolania Fortunato de

doi:10.1590/1983-40632015v4537090

Cited by 10 publications

(13 citation statements)

References 20 publications

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“…The association of the application gypsum and organic matter has great power to reduce soil sodicity, and the efficiency is also related to the time of application (Sousa et al, 2014). Among the functions of gypsum, the most important is to increase the soluble calcium content to displace sodium to the soil solution (Tavares Filho et al, 2012;Sousa et al, 2014;Araujo et al, 2015), facilitating the leaching of this monovalent cation.…”

Section: Resultsmentioning

confidence: 99%

“…To reclaim soils degraded by salts, the fundamental techniques are leaching and drainage of the soil (Miranda et al, 2011;Tavares Filho et al, 2012), which can be enhanced with the use of chemical amendments. Leaching and drainage reduce salinity through the solubilization and leaching of salts, while the corrective reduces sodicity by the chemical action of mineral and organic sources (Gill et al, 2008;Sá et al, 2013;Sousa et al, 2014;Araujo et al, 2015). Meng et al (2019) recommend the annual application of bovine manure due to its action of reducing pH and electrical conductivity, increasing organic matter content and improving soil structural properties, retention, water infiltration and aggregation.…”

Section: Introductionmentioning

confidence: 99%

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Saline-sodic soil treated with gypsum, organic sources and leaching for successive cultivation of sunflower and rice

Santos

Cavalcante

Gheyi

et al. 2019

Rev. bras. eng. agríc. ambient.

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Correction of saline and sodic soils aims to reduce salts dissolved in the solution and exchangeable sodium, respectively, to allow the growth and production of crops. In this context, an experiment was carried out between August/2011 and September/2012, in saline-sodic soil of the Irrigated Perimeter of São Gonçalo, in the municipality of Sousa, PB, Brazil. Agricultural gypsum, organic sources and continuous leaching for reducing salinity, sodicity and alkalinity in the saline-sodic soil and their effects on the production of the sunflower cultivar Embrapa 122/V-2000 and the rice variety Diamante were evaluated. The treatments were distributed in four randomized blocks and the soil was subjected to continuous leaching for 50 days and evaluated for salinity, sodicity and alkalinity before and after leaching, as well after sunflower and rice cultivation, in the 0-0.20 and 0.20-0.40 m layers. Leaching and the application of gypsum and organic sources reduced the initial salinity in both soil layers, to a greater extent in the surface layer. Exchangeable sodium decreased in 0-0.20 m and increased in 0.20-0.40 m. After rice cultivation, the soil in the 0-0.20 m layer changed from saline-sodic to non-saline in the treatments gypsum + bovine manure and gypsum + rice husk. The reduction of salinity, sodicity and alkalinity in the soil was higher during rice cultivation than during sunflower cultivation.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Saline-sodic soil treated with gypsum, organic sources and leaching for successive cultivation of sunflower and rice

Santos

Cavalcante

Gheyi

et al. 2019

Rev. bras. eng. agríc. ambient.

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“…Água vol. 15 n. 5, e2537 -Taubaté 2020 which can be confirmed by the increase in the solubilization of ions, such as Ca 2+ and Mg 2+ , notably by the high contents of these nutrients found in the cladodes (Giordano and Raven, 2014;Araujo et al, 2015). The low contents of Zn in the cladodes may have occurred due to the greater supply of organic matter resulting from the increase of weed and consequent adsorption of this nutrient to the organic fraction or to Fe and Al oxides in the soil matrix (Smanhotto et al, 2010).…”

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confidence: 88%

Variations in soil water replacement levels promote changes in forage cactus mineral composition and biomass productivity

et al. 2020

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Population growth and the need to exploit natural resources to produce food and guarantee food sovereignty reduce water availability, which can influence nutrient absorption capacity and production of plants. This study evaluated whether variations in soil water replacement levels promote changes in the mineral composition and biomass productivity of forage cactus varieties. A field experiment was conducted in a randomized block design with five levels of reference evapotranspiration replacement (25, 50, 75, 100 and 125% ETo) and three replicates. Contents of the macronutrients N, P, K, Ca, Mg and S; micronutrients Cu, Fe, Mn, Zn, Cl, Na and B; and biomass productivity were quantified in two varieties of forage cactus (‘Orelha de Elefante Mexicana’ and ‘Miúda’). The data were subjected to principal component and multivariate variance analysis. The mineral composition of the forage cactus varieties ‘Miúda’ and ‘Orelha de Elefante Mexicana’ can be optimized from soil water management, so as to obtain adequate nutritional balance for higher yield. The replacement level of 75% ETo promoted greater balance between nutrients in the cladodes of the forage cactus variety ‘Miúda’, while ‘Orelha de Elefante Mexicana’ had better nutritional balance with the replacement levels of 100 and 125% ETo. Soil water replacement levels of 100 and 125% ETo promote high accumulation of Na+ and Cl- ions in the cladodes of the forage cactus varieties studied. Highest biomass productivity of the varieties ‘Orelha de Elefante Mexicana’ and ‘Miúda’ was obtained with 75 and 100% ETo replacement levels, respectively. Among the varieties, ‘Orelha de Elefante Mexicana’ had a higher capacity for nutrient accumulation and biomass productivity, followed by ‘Miúda’, under the edaphoclimatic conditions of the Brazilian semiarid region.

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“…In spite of the adequate climatic conditions for passion fruit production in the Brazilian Northeast, the region is the most compromised in the country by salinity issues, a phenomenon that affects an average of 60 million hectares of irrigated area in the world, and entails severe damages to agricultural production [9]. In the Northeast, the accumulation of ions in the soil is favored by the edaphoclimatic conditions, conferring it a saline character [10]. In this manner, the quality of the irrigation water, in the main passion fruit cultivation areas of the semiarid region is, in most cases, originated from superficial and subterraneous water springs that present electrical conductivities superior to 1.5 dS m -1 [11].…”

Section: Introductionmentioning

confidence: 99%

Yield and Physical Quality of the Yellow Passion Fruit under Spacing within Plants and Water Salinity

Macedo¹,

Cavalcante

Lobo

et al. 2019

JEAI

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Aims: The aim of this work was to evaluate the yield and the physical quality of the yellow passion fruit accession ‘Guinezinho’ as a function of the within-row plant spacing, with saline irrigation water in consecutive growing seasons. Study Design: The experiment was arranged in randomized blocks, with four replicates and 12 plants per parcel, in a 4 x 2 factorial arrangement, referring to the spacing in the planting lines of 3, 6, 9 and 12 m, and two consecutive growing seasons. Place and Duration of Study: The experiment was developed in the municipality of Coronel Ezequiel, Rio Grande do Norte state, Brazil, within the months of April 2013 and October 2014. Methodology: The seedings were transplanted in the spacings of 3, 6, 9 and 12 m, and distant 2 m within lines according to the treatments; they were conducted in a vertical shoot position (VSP) training system, and daily irrigated during the arid period with saline water (ECiw = 3.4 dS m-1). The following characteristics were evaluated: fruit yield, fruit mass, longitudinal and transversal fruit diameter, pulp yield, peel mass and peel thickness. Results: The interaction between spacing and growing season exercised a significant effect on the fruit yield, longitudinal fruit diameter, pulp yield, thickness and mass of the peel (P = .05). The variables transversal diameter and fruit mass only varied within the growing seasons (P = .05). The plants cultivated in the 3 m spacing were the most productive in the two seasons, with 23.7 and 36.3 t ha-1, in the first and second seasons, respectively. Conclusion: The highest yield of the yellow passion fruit accession ‘Guinezinho’ was obtained in the smaller plant spacing in the lines. Except for the pulp yield, the yield and physical quality of the fruits were superior in the second growing season. The irrigation with highly saline water, in this type of soil, did not compromise the productive ability of the passion fruit accession ‘Guinezinho’.

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Enxofre elementar ou sulfato de cálcio para remediação de solos salino-sódicos?

Cited by 10 publications

References 20 publications

Saline-sodic soil treated with gypsum, organic sources and leaching for successive cultivation of sunflower and rice

Saline-sodic soil treated with gypsum, organic sources and leaching for successive cultivation of sunflower and rice

Variations in soil water replacement levels promote changes in forage cactus mineral composition and biomass productivity

Yield and Physical Quality of the Yellow Passion Fruit under Spacing within Plants and Water Salinity

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