Tropical soils cultivated with tomato: fractionation and speciation of Al

Nogueirol, Roberta Corrêa; Monteiro, Francisco Antônio; Azevedo, Ricardo Antunes

doi:10.1007/s10661-015-4366-0

Cited by 17 publications

(11 citation statements)

References 37 publications

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“…Furthermore, the influence of pH is so great that, in acid soils with pHCaCl 2 above 5, Al 3+ tends to completely precipitate into insoluble forms [such as Al(OH 3 )] and stable complexes with humic substances (Nogueirol;Monteiro;Azevedo, 2015). This explains the lack of detection of Al 3+ (extracted with 1 mol L -1 KCl) for the majority of soils with the first (10 Mg ha -1 ) or second (20 Mg ha -1 ) alkalinized sewage sludge dose ( Figure 2B).…”

Section: Resultsmentioning

confidence: 99%

Alkalinized sewage sludge application improves fertility of acid soils

et al. 2017

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Although it is known that alkalinized sewage sludge raises the pH of acid soils, there is limited knowledge regarding its effects on other soil fertility indicators, such as P and K availability and soil organic C content. Thus, the goal of this study was to evaluate how the application of alkalinized sewage sludge affects the fertility of acid soil. Twenty sewage treatment plants were selected throughout Paraná State (Brazil), and samples of alkalinized sewage sludge and samples of the most representative agricultural soil of the region were collected (covering soils with medium, clayey or very clayey texture). Each soil was incubated for 60 days with doses of sewage sludge (0, 10, 20, 40, and 80 Mg ha -1 ) from its region and equivalent doses of limestone. The alkalinized sewage sludge was superior to limestone in the correction of soil acidity (pH, Al 3+ , and H + Al 3+ ) and P and Ca 2+ availability. The sludge also increased Mg 2+ availability in all soils, K + in seven soils and organic C in three soils. The very clayey soils (higher buffering capacity) supported higher sludge doses than did clayey and medium texture soils. The alkalinized sewage sludge application in acid soils proved to be an interesting alternative to recycling this type of waste, because it improved soil fertility and could reduce costs associated with soil management and crop fertilization.Index terms: Sanitation waste; liming; phosphorus recovery; nutrient source; organic matter. RESUMOEmbora seja conhecido a capacidade do lodo de esgoto alcalinizado em elevar o pH de solos ácidos, tem-se um limitado conhecimento sobre o efeito em outros indicadores da fertilidade do solo, como disponibilidade de P e K e, teor de C orgânico no solo. Assim, o objetivo do estudo foi avaliar como a aplicação de lodo de esgoto alcalinizado afeta a fertilidade de solos ácidos. Foram selecionadas vinte estações de tratamento de esgoto ao longo do Paraná (Brasil), onde foram coletadas amostras de lodo de esgoto alcalinizado e amostras do solo agrícola mais representativo da região (abrangendo solos com textura média, argilosa ou muito argilosa). Cada solo foi incubado por 60 dias com doses de lodo de esgoto (0, 10, 20, 40, ) da sua região e com doses equivalentes de calcário. O lodo de esgoto alcalinizado foi superior ao calcário na correção da acidez do solo (pH, Al 3+ e H+Al 3+ ) e na elevação da disponibilidade P e Ca 2+ . O lodo também aumentou a disponibilidade de Mg 2+ em todos os solos, K + em sete solos e C orgânico em três solos. Os solos muito argilosos (alta poder tampão) suportam maior dose de lodo em comparação aos solos de textura argilosa e média. A aplicação de lodo de esgoto alcalinizado em solos ácidos demonstrou ser uma interessante alternativa para reciclar esse tipo de resíduo, pois melhorou a fertilidade dos solos e pode vir a reduzir custos com manejo do solo e adubação das culturas.

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Section: Resultsmentioning

confidence: 99%

Alkalinized sewage sludge application improves fertility of acid soils

et al. 2017

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“…At a low pH (about 4.3) trivalent aluminum (Al 3+ ) is the most abundant form and has the greatest impact on plant growth. In contrast, precipitated or chelated Al with organic compounds is not toxic for plants ( Nogueirol et al, 2015 ).…”

Section: Introductionmentioning

confidence: 99%

Aluminum, a Friend or Foe of Higher Plants in Acid Soils

et al. 2017

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Aluminum (Al) is the most abundant metal in the earth’s crust, but its availability depends on soil pH. Despite this abundance, Al is not considered an essential element and so far no experimental evidence has been put forward for a biological role. In plants and other organisms, Al can have a beneficial or toxic effect, depending on factors such as, metal concentration, the chemical form of Al, growth conditions and plant species. Here we review recent advances in the study of Al in plants at physiological, biochemical and molecular levels, focusing mainly on the beneficial effect of Al in plants (stimulation of root growth, increased nutrient uptake, the increase in enzyme activity, and others). In addition, we discuss the possible mechanisms involved in improving the growth of plants cultivated in soils with acid pH, as well as mechanisms of tolerance to the toxic effect of Al.

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“…The trivalent aluminum (Al 3+ ) is Yuanjiao Liu and Jingyu Tao contributed equally to this work as parallel first authors. most plentiful form on the acid soils, and Al 3+ can severally impede the root elongation and inhibit plant growth in the majority plants (Nogueirol et al 2015). Al toxicity has been the main factor limiting crop production on the acids soils (Kochian 1995;Kochian et al 2015).…”

Section: Introductionmentioning

confidence: 99%

The Beneficial Effects of Aluminum on the Plant Growth in Camellia japonica

Liu

Tao

Cao

et al. 2020

J Soil Sci Plant Nutr

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The aim of this research was to investigate the effect of aluminum (Al) on the plant growth, nutrient uptake, and Al accumulation in Camellia japonica. A hydroponic experiment was performed in a completely randomized design with four concentration of Al (0, 0.5, 1, and 2 mM). After growing 8 weeks in the hydroponic nutrient solution, the fine roots and mature leaves of plants were sampled to analyze the biomass, photosynthetic parameters, nutrients uptake, and Al accumulation. The 0.5, 1, and 2 mM Al supplement presented an increase of 71, 118, and 42% on the root biomass, respectively, comparing to the control. The Alinduced growth stimulation in 0.5 and 1 mM Al treatment of Camellia japonica was associated with increased levels of chlorophyll a and b, promotion of net photosynthesis rate, raised contents of soluble sugar and total soluble protein, and decreased levels of malondialdehyde (MDA) and free proline in both leaves and fine roots. The concentrations of nitrogen (N), phosphorus (P), iron (Fe), manganese (Mn), zinc (Zn), and copper (Cu) in fine roots of 1 mM Al-treated plants were significantly higher than those in the control plants, whereas the levels of calcium (Ca) and magnesium (Mg) were much lower. The mean Al levels in the 1 mM Al-treated plants were 1587, 7189, and 11,192 mg kg −1 (dry mass, DW) for the 1st/2nd, 3rd/4th mature leaves, and fine roots, respectively. This study indicated that 0.5 and 1 mM Al were beneficial to the growth of Camellia japonica. This Alinduced growth enhancement was presumably associated with the increased uptake of nutrient elements. This study also confirmed Camellia japonica as an Al-accumulator.

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Tropical soils cultivated with tomato: fractionation and speciation of Al

Cited by 17 publications

References 37 publications

Alkalinized sewage sludge application improves fertility of acid soils

Alkalinized sewage sludge application improves fertility of acid soils

Aluminum, a Friend or Foe of Higher Plants in Acid Soils

The Beneficial Effects of Aluminum on the Plant Growth in Camellia japonica

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