Lime and calcium-magnesium silicate in the ionic speciation of an Oxisol

Antonângelo, João Arthur; Neto, J. F. Teixeira; Crusciol, Carlos Alexandre Costa; Alleoni, Luís Reynaldo Ferracciú

doi:10.1590/1678-992x-2016-0372

Cited by 37 publications

(11 citation statements)

References 25 publications

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“…(2008), Peralta & Costa (2013) and Carmo et al (2016). Al-COD and Al-OE also decreased with liming; however, there was an increase in activity, to a lesser extent, of Al(OH) 3 and Al(OH) 4 -(7% and 5.5%, respectively) on the average of all soils and treatments in the solution of all soils that are considered non-toxic to plants (Hernández-Soriano, 2012;Rutkowska et al, 2015;Antonangelo et al, 2017).…”

Section: Cations In Solutionmentioning

confidence: 95%

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

Cunha

Almeida

Ernani

et al. 2018

Agraria

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The knowledge of the chemical composition of the soil solution through chemical speciation is important for the monitoring of nutrient availability, soil fertility management and plant nutrition. The objective of this study was to evaluate the chemical composition and activity of Al, cations and anions by chemical speciation in solution of some Brazilian acid soils (AC, PE, RS and SC) submitted to liming and cultivated with soybean and maize plants. In addition, to identify the chemical elements responsible for the reduction of Al activity in the solution and its toxicity to plants. The predominant aluminum, calcium, magnesium, potassium, sulfate, chloride and nitrate species in all soils were: Ca 2+ and Mg 2+ , K + , SO 4 2-, Cland NO 3 in all soils. In the treatments without limestone in the soils AC9, RS and CB predominated the species of P H 2 PO 4 and in the soils PE and BR was the AlHPO 4 + . However, with liming the P form that predominated in all soils was H 2 PO 4 and, to a lesser extent, HPO 4 2-. The activity of the Ca 2+ and Mg 2+ ions was the main responsible for the neutralization of the toxic effects of Al 3+ in the evaluated plants.Composição, especiação química e atividade de íons na solução de solos ácidos brasileiros RESUMO: O conhecimento da composição química da solução do solo, por meio da especiação química, é importante para o acompanhamento da disponibilidade de nutrientes para o manejo da fertilidade do solo e da nutrição de plantas. O estudo objetivou avaliar a composição química e a atividade do Al, dos cátions e dos ânions, por meio da especiação química, na solução de alguns solos ácidos brasileiros (AC, PE, RS e SC) submetidos à calagem e cultivados com plantas de soja e milho. Além disso, identificar os elementos químicos responsáveis pela redução da atividade do Al na solução e sua toxidez às plantas. As espécies químicas de alumínio, cálcio, magnésio, potássio, sulfato, cloreto e nitrato predominantes em maiores proporções em todos os solos foram: Al 3+ , Ca 2+ e Mg 2+ , K + , SO 4 2-, Cle NO 3 -. Nos tratamentos sem calcário nos solos AC9, RS e CB predominou a espécie de P H 2 PO 4 e nos solos PE e BR foi a AlHPO 4 + . Porém, com a calagem a forma de P que predominou em todos os solos foi a H 2 PO 4 e, em menor proporção, a HPO 4 2-. A atividade dos íons Ca 2+ e Mg 2+ foi a principal responsável pela neutralização dos efeitos tóxicos do Al 3+ nas plantas avaliadas. Palavras-chave: ânions; calcário dolomítico; cátions; complexos; plantas Composition, chemical speciation and activity of ions in the solution of Brazilian acid soils Rev. Bras. Cienc. Agrar., Recife, v.13, n.3, e5542, 2018 2/10

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Section: Cations In Solutionmentioning

confidence: 95%

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

Cunha

Almeida

Ernani

et al. 2018

Agraria

View full text Add to dashboard Cite

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“…The pH buffering capacity of soils can be improved by the ddition of reactive carbonate minerals [12] and silicate minerals [13,14]. This is because the dissolution of carbonate minerals can release Ca 2+ and CO 3 2− ions to increase soil pH via the neutralisation of added H + ions, whereas the dissolution of silicate minerals releases SiO 4 4− ions which react with water molecules and transform into silicic acid (H 4 SiO 4 ) to release four OH − ions, thus neutralizing H + ions and increasing the soil pH buffering capacity [15,16]. However, the dissolution and neutralizing ability of these minerals are influenced by their nature and reactivity [17], the amount of H + ions [18], soil type and degree of soil weathering [12,19], and phosphate settling on the surfaces of these minerals [20,21].…”

Section: Introductionmentioning

confidence: 99%

Soil Nutrient Retention and pH Buffering Capacity Are Enhanced by Calciprill and Sodium Silicate

Ahmed

Jalloh

et al. 2022

Agronomy

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In the tropics, warm temperatures and high rainfall contribute to acidic soil formation because of the significant leaching of base cations (K+, Ca2+, Mg2+, and Na+), followed by the replacement of the base cations with Al3+, Fe2+, and H+ ions at the soil adsorption sites. The pH buffering capacity of highly weathered acid soils is generally low because of their low pH which negatively impacts soil and crop productivity. Thus, there is a need to amend these soils with the right amount of inorganic liming materials which have relatively high neutralizing values and reactivity to overcome the aforementioned problems. Soil leaching and the pH buffering capacity studies were conducted to determine whether the co-application or co-amendment of a calcium carbonate product (Calciprill) and sodium silicate can improve soil nutrient retention and pH buffering capacity of the Bekenu series (Typic Paleudults). A 30 day soil leaching experiment was carried out using a completely randomized design with 16 treatments and 3 replications after which the leached soil samples were used for a pH buffering capacity study. The Calciprill and sodium silicate treatments significantly improved soil pH, exchangeable NH4+, available P, exchangeable base cations, Effective Cation Exchange Capacity (ECEC), and pH buffering capacity in comparison with the untreated soil. The improvements were attributed to the alkalinity of Calciprill and sodium silicate due to their high inherent K+, Ca2+, Mg2+, and Na+ contents. The neutralizing effects of the amendments impeded the hydrolysis of Al3+ (96.5%), Fe2+ (70.4%), and Mn2+ (25.3%) ions resulting in fewer H+ ions being produced. The co-application of Calciprill and sodium silicate reduced the leaching of Ca2+ (58.7%) and NO3− (74.8%) from the amended soils. This was due to the ability of sodium silicate to reduce soil permeability and protect the Calciprill and available NO3− from being leached. This also improved the longevity of Calciprill to enhance the soil pH buffering capacity. However, the amounts of NH4+, P, and base cations leached from the amended soils were higher compared with the un-amended soils. This was due to the high solubility of sodium silicate. The most suitable combination amendment was 7.01 g Calciprill and 9.26 g sodium silicate (C2S5) per kilogram soil. It is possible for farmers to adopt the combined use Calciprill and sodium silicate to regulate soil nutrient retention and improve the soil pH buffering capacity of highly weathered acidic soils. This will enhance soil and crop productivity.

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“…In the surface soil layer (0-10 cm), soil organic matter actively binds soluble Al, due to the soil having relatively high DOM compared to subsoil layers [11]. In contrast, organically bound Al is important soil profiles that have relatively high DOM content in the subsoil [12]. Topdressed or broadcasted L can reduce subsoil Al toxicity when sufficient L is applied to maintain the surface soil layer pH CaCl 2 ≥ 5.5 [13][14][15], provided it is anthropologically incorporated by cultivation to increase L dissolution [13].…”

Section: Introductionmentioning

confidence: 99%

Short- and Long-Term Effects of Lime and Gypsum Applications on Acid Soils in a Water-Limited Environment: 1. Grain Yield Response and Nutrient Concentration

Anderson¹,

Pathan

Easton³

et al. 2020

Agronomy

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Surface (0–10 cm) and subsoil (soil layers below 10 cm) acidity and resulting aluminum (Al) toxicity reduce crop grain yields. In South Western Australia (SWA), these constraints affect 14.2 million hectares or 53% of the agricultural area. Both lime (L, CaCO3) and gypsum (G, CaSO4) application can decrease the toxic effect of Al, leading to an increase in crop grain yields. Within the region, it is unclear if G alone or the combined use of L and G has a role in alleviating soil acidity in SWA, due to low sulfate S (SO4–S) sorption properties of the soil. We present results from three experiments located in the eastern wheatbelt of SWA, which examined the short-term (ST, 2 growing seasons), medium-term (MT, 3 growing seasons), and long-term (LT, 7 growing seasons over 10 years) effects of L and G on grain yield and plant nutrient concentrations. Despite the rapid leaching of SO4–S and no self-liming impact, it was profitable to apply G, due to the significant ST grain yield responses. The grain yield response to G developed even following relatively dry years, but declined over time due to SO4–S leaching. At the LT experimental site had received no previous L application, whereas, at the ST and MT sites, L had been applied by the grower over the previous 5–10 years. For the LT site, the most profitable treatment for wheat (Triticum aestivum L.) grain yield, was the combined application of 4 t L ha−1 with 2 t G ha−1. At this site, the 0–10 cm soil pHCaCl2 was 4.6, and AlCaCl2 was greater than 2.5 mg kg−1 in the 10–30 cm soil layer. In contrast, at the ST and MT sites, the pHCaCl2 of 0–10 cm soil layer was ≥5.5; it was only profitable to apply G to the MT site where the soil compaction constraint had been removed by deep ripping. The use of L increases soil pHCaCl2, resulting in the improved availability of anions, phosphorus (P) in the LT and molybdenum (Mo) at all sampling times, but reduced availability of cations zinc (Zn) in the LT and manganese (Mn) at all sampling. The application of G reduced Mo concentrations, due to the high SO4–S content of the soil.

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Lime and calcium-magnesium silicate in the ionic speciation of an Oxisol

Cited by 37 publications

References 25 publications

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

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

Soil Nutrient Retention and pH Buffering Capacity Are Enhanced by Calciprill and Sodium Silicate

Short- and Long-Term Effects of Lime and Gypsum Applications on Acid Soils in a Water-Limited Environment: 1. Grain Yield Response and Nutrient Concentration

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