Composition, chemical speciation and activity of ions in the solution of Brazilian acid soils

Cunha, Gabriel Octávio de Mello; Almeida, Jaime Antônio de; Ernani, Paulo Roberto; Pereira, Éderson R.; Brunetto, Gustavo

doi:10.5039/agraria.v13i3a5542

Cited by 4 publications

(11 citation statements)

References 22 publications

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“…CB (NB), another soil from Santa Catarina, was used as reference, for being more weathered, and exhibiting kaolinite minerology and lower exchangeable Al-KCl, Ca 2+ and Mg 2+ content. Further details of the results of these analyzes can be verified in Cunha et al (2014) and Cunha et al (2018aCunha et al ( , 2018b. (2) Horizons collected;…”

Section: Methodsmentioning

confidence: 98%

“…Chemical spetiation of the soil solution was estimated using the Visual Minteq program, version 3.1, based on the Minteq A2 program, version 4.0 (Gustafsson, 2016). Further details can be checked in Cunha et al (2018aCunha et al ( , 2018b. Table 2.…”

Section: Methodsmentioning

confidence: 99%

“…In an earlier study, using the same soils as the present investigation, Cunha et al (2014Cunha et al ( , 2015 suggest that part of the Al-KCl does not represent the exchangeable forms of Al, since the high concentration of KCl (1.0 mol L -1 ) may hydrolyze some of the non-exchangeable forms of Al, possibly originating in the amorphous compounds of these soils, overestimating its exchangeable content and, in turn, Al saturation (Table 3). Overestimating Al-KCl may mask Al toxicity to plants, since the amount of Al extracted and quantified may be greater than the actual aluminum toxicity in roots (Ebeling et al, 2008;Bernini et al, 2013;Cunha et al, 2018aCunha et al, , 2018b. The P levels in AC9, PE, RS and BR soils after cultivation were very high (Table 3), which may partially decrease plant response to lime application (Ernani et al, 2000).…”

Section: Soil Chemical Propertiesmentioning

confidence: 99%

“…However, some soils contain aluminum levels extracted with 1 mol L -1 KCl (Al-KCl) solution exceeding 10 cmol c kg -1 , where plants exhibit no signs of Al 3+ toxicity and obtain satisfactory yields. Even when low doses of soil amendments are used, plant yield is satisfactory, demonstrating that not all the Al deemed exchangeable in soil chemical analysis is in fact toxic to plants (Wadt, 2002;Cunha et al, 2018aCunha et al, , 2018b. On the other hand, most acidic Brazilian soils respond to liming, which is widely used to raise soil pH, sum of bases, base saturation and nutrient availability in the soil solution, thereby enhancing plant nutritional efficiency, providing Ca 2+ and Mg 2+ , neutralizing Al 3+ and decreasing Al 3+ saturation (Joris et al, 2013;Rutkowska et al, 2015;Cunha et al, 2018aCunha et al, , 2018b.…”

Section: Introductionmentioning

confidence: 99%

“…Even when low doses of soil amendments are used, plant yield is satisfactory, demonstrating that not all the Al deemed exchangeable in soil chemical analysis is in fact toxic to plants (Wadt, 2002;Cunha et al, 2018aCunha et al, , 2018b. On the other hand, most acidic Brazilian soils respond to liming, which is widely used to raise soil pH, sum of bases, base saturation and nutrient availability in the soil solution, thereby enhancing plant nutritional efficiency, providing Ca 2+ and Mg 2+ , neutralizing Al 3+ and decreasing Al 3+ saturation (Joris et al, 2013;Rutkowska et al, 2015;Cunha et al, 2018aCunha et al, , 2018b. between shoot nutrient content (NC sh ) and root dry weight (RDW), demonstrating plant's ability to extract nutrients from the soil, which differs among species (Swiader et al, 1994;Fageria & Moreira, 2011;Sathiyavani et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Nutritional Efficiency and Nutrient Acumulation of Maize Cultivated in Soils With High Al-KCl Content

Cunha¹,

Almeida²,

Souza³

et al. 2019

JAS

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Most Brazilian soils are weathered and acidic, generally with exchangeable aluminum levels toxic to plants. Aluminum content can exceed 10 cmolc kg-1 in certain soils, but does not interfere in plant nutrient absorption, transport and accumulation. This study aimed to assess whether the high aluminum levels extracted with 1 mol L-1 KCl solution affect the nutritional efficiency of maize plants grown in acidic soils in areas of Brazilian states (AC: profile 9, PE, SC and RS) never before cultivated. To that end, two greenhouse experiments were performed (soybean: 45 days and maize: 60 days) with increasing levels of lime (0; 25; 50 and 100% H+Al content). After the experiments and collection, chemical analyses were conducted to characterize the soils and determine the chemical composition of the maize plants. The Al levels did not interfere in maize plants, nutrient absorption, transport, use or accumulation in AC9 and Rosario do Sul (RS) soils, but did affect those cultivated in PE, BR and CB soils in treatments without lime. The absence of Al toxicity is related to the increased concentration and activity of basic cations and P in the soil solution.

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Section: Methodsmentioning

confidence: 98%

Section: Methodsmentioning

confidence: 99%

Section: Soil Chemical Propertiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Nutritional Efficiency and Nutrient Acumulation of Maize Cultivated in Soils With High Al-KCl Content

Cunha¹,

Almeida²,

Souza³

et al. 2019

JAS

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Potential of olivine melilitite as a soil remineralizer according to particle size and rates

Almeida

Cunha

Heberle

et al. 2022

Pesq. agropec. bras.

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The objective of this work was to evaluate the potential of olivine melilitite rock powder, in two particle sizes and in increasing rates, to improve the chemical properties of the soil and the growth and nutrient accumulation of soybean (Glycine max) and sorghum (Sorghum bicolor) plants. The treatments consisted of three rates of the rock powder, equivalent to 2.5, 5.0, and 10 Mg ha-1, in the powder and filler particle sizes of the commercial product. Physicochemical and mineralogical analyses were carried out using, as a basis, the Brazilian normative ruling on rock powder as a soil remineralizer. The soybean and sorghum plants were cultivated for 60 and 45 days, respectively, in a greenhouse on a Humic Dystrudept and a Typic Hapludult. The olivine melilitite rock powder applied in the tested increasing rates and two particle sizes improved soil chemical properties and promoted plant growth. However, the filler particle size is more efficient than that of the powder to improve soil chemical properties and plant growth and nutrient accumulation.

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Lime Rate in Clayey Soils Influences Chemical Fertility and Sugarcane Yield

Campos

Martello

Siqueira

et al. 2022

Plants

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Liming contributes to the alleviation of acidity in highly weathered soils. For sugarcane, the use of green harvest methods and new soil tillage systems requires an adjustment of lime application rates. In the present study, the effects of different lime rates and tillage systems on sugarcane performance and soil chemical fertility parameters were assessed. Three experiments were conducted in two locations between April 2015 and October 2019. The study design was a randomized block field study with four replicates. Four lime rates were applied once at sugarcane establishments in each soil tillage system and location: no liming (control); lime recommended rate (LRR); two times LRR (2× LRR); and three times LRR (3× LRR). The three soil tillage systems were conventional (CT), deep-strip (DT), and modified deep-strip tillage (MDT). Soil chemical fertility, leaf nutrient concentrations, and sugarcane yield components were analyzed, and correlations were identified by principal component analysis (PCA). The soil acidity was adequately alleviated in all tillage systems. Increasing the lime rate improved the lime distribution and soil fertility parameters. Applying lime at rates higher than LRR improved stalk and sugar yields, longevity, agronomic efficiency index (AEI), and correlated with a longer residual effect of liming, mainly in the last ratoon.

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Composition, chemical speciation and activity of ions in the solution of Brazilian acid soils

Cited by 4 publications

References 22 publications

Nutritional Efficiency and Nutrient Acumulation of Maize Cultivated in Soils With High Al-KCl Content

Nutritional Efficiency and Nutrient Acumulation of Maize Cultivated in Soils With High Al-KCl Content

Potential of olivine melilitite as a soil remineralizer according to particle size and rates

Lime Rate in Clayey Soils Influences Chemical Fertility and Sugarcane Yield

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