Tannery sludge compost amendment rates on soil microbial biomass of two different soils

Santos, Jorge Antônio Gonzaga; Nunes, Luís Alfredo Pinheiro Leal; Melo, Wanderley José de; Araújo, Ademir Sérgio Ferreira de

doi:10.1016/j.ejsobi.2011.01.002

Cited by 71 publications

(63 citation statements)

References 30 publications

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“…The increased soil pH observed in our study may be explained by the high pH and Ca content found in the CTS (Table 1). The CTS has a high pH and Ca and Na contents because the industry uses large amounts of hydroxides, carbonates, and salts during the tanning process (Santos et al, 2011). However, the soil pH observed after six years of CTS amendment in our study was lower than that reported by Martines et al (2010), who used natural tannery sludge with a high pH and Ca content.…”

Section: Resultscontrasting

confidence: 55%

“…Following the amendment of composted tannery sludge (CTS), its application to the soil can increase plant yield by supplying additional nutrients, increasing soil pH, and consequently reducing the exchangeable aluminum content (Santos et al, 2011). Because CTS contains high levels of organic matter, it may also improve the chemical and physical properties of the soil.…”

Section: Introductionmentioning

confidence: 99%

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<b>Soil properties and cowpea yield after six years of consecutive amendment of composted tannery sludge

et al. 2016

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ABSTRACT. This study evaluated soil properties and cowpea yield after six years of consecutive amendment of composted tannery sludge. The compost was applied annually at 0, 2.5, 5, 10, and 20 Mg ha -1 and at the end of the sixth year, the chemical and physical properties of the soil were evaluated using a randomized block design. The Cr, P, K, Ca, Na and organic C contents and the pH and cation exchange capacity increased linearly after six years of compost amendment. The soil bulk density decreased linearly while the aggregate stability index increased after compost amendment. As a consequence of the changes in the chemical and physical properties of the soil, cowpea yield showed a quadratic response to the tannery rates, with an estimated maximum cowpea yield at 8.3 Mg ha -1 . In conclusion, the soil chemical and physical properties improved after six years of composted tannery sludge amendment. However, the soil pH and the Cr and Na contents increased with composted tannery sludge amendment, which influenced the cowpea yield and resulted in a quadratic response to the compost.Keywords: waste management, soil fertility, soil quality.Propriedades do solo e produtividade do feijão-caupi após seis anos de aplicações consecutivas de lodo de curtume compostado RESUMO. Este estudo avaliou as propriedades do solo e a produtividade do feijão-caupi após seis anos de aplicações consecutivas de lodo de curtume compostado. Anualmente, o composto foi aplicado a 0, 2,5, 5, 10 e 20 Mg ha -1 e no sexto ano as propriedades químicas e físicas do solo e a produtividade do feijão-caupi foram avaliadas em experimento de blocos casualizados. Cr, P, K, C orgânico, pH, Ca, Na, e a capacidade de troca de cátions aumentaram linearmente após seis anos de aplicação do composto. A densidade do solo diminuiu linearmente enquanto a estabilidade de agregados aumentou após a aplicação do composto. Em consequência das mudanças nas propriedades químicas e físicas do solo, a produtividade do feijão-caupi apresentou resposta quadrática às doses de lodo de curtume compostado com máxima produtividade estimada encontrada na dose de 8,3 Mg ha -1 . Em conclusão, as propriedades químicas e físicas do solo melhoraram após seis anos de aplicação do lodo de curtume compostado. Entretanto, o pH do solo, bem como os teores de Cr e Na aumentaram com aplicação do lodo de curtume compostado e estes parâmetros influenciaram a produtividade do feijão-caupi que apresentou resposta quadrática.Palavras-chave: manejo de resíduos, fertilidade do solo, qualidade do solo.

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Section: Resultscontrasting

confidence: 55%

Section: Introductionmentioning

confidence: 99%

<b>Soil properties and cowpea yield after six years of consecutive amendment of composted tannery sludge

et al. 2016

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“…However, consecutive amendments with composted wastes may promote the concentration of heavy metals in soils and plants (MCBRIDE et al, 2004), and heavy metals may cause negative or positive effects on plant growth and yield. Some studies reported positive, negative or neutral plant responses to heavy metal accumulation in soil (MARTINS et al, 2003;MERLINO et al, 2010;SANTOS et al, 2011). In plants, heavy metal accumulation varies between different parts of the plant or among different plant species.…”

Section: Introductionmentioning

confidence: 99%

<b>Heavy metals and yield of cowpea cultivated under composted tannery sludge amendment

Gonçalves¹,

Araújo²,

Nunes³

et al. 2014

Acta Sci. Agron.

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“…Tannery sludge contains high concentrations of inorganic elements, such as chromium (Cr), which may lead to environmental pollution and affect human health (Gupta and Sinha, 2007). However, such waste also contains organic matter and plant nutrients that can improve soil fertility and plant growth (Hargreaves et al, 2008;Santos et al, 2011). Composting tannery sludge may be useful for stabilizing nutrients presents in sludge (Castaldi et al, 2004) and decreasing sludge toxicity (Araújo and Monteiro, 2005).…”

Section: Introductionmentioning

confidence: 99%

“…The tannery industry represents an important activity in the Brazilian economy, processing 44 million units of leather annually and, consequently, generating a high quantity of tannery sludge (Santos et al, 2011). Tannery sludge contains high concentrations of inorganic elements, such as chromium (Cr), which may lead to environmental pollution and affect human health (Gupta and Sinha, 2007).…”

Section: Introductionmentioning

confidence: 99%

Chromium in Soil Organic Matter and Cowpea After Four Consecutive Annual Applications of Composted Tannery Sludge

Oliveira

Araújo

Melo

2015

Rev. Bras. Ciênc. Solo

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Tannery sludge contains high concentrations of inorganic elements, such as chromium (Cr), which may lead to environmental pollution and affect human health The behavior of Cr in organic matter fractions and in the growth of cowpea (Vigna unguiculata L.) was studied in a sandy soil after four consecutive annual applications of composted tannery sludge (CTS). Over a four-year period, CTS was applied on permanent plots (2 × 5 m) and incorporated in the soil (0-20 cm) at the rates of 0, 2.5, 5.0, 10.0, and 20.0 Mg ha -1 (dry weight basis). These treatments were replicated four times in a randomized block design. In the fourth year, cowpea was planted and grown for 50 days, at which time we analyzed the Cr concentrations in the soil, in the fulvic acid, humic acid, and humin fractions, and in the leaves, pods, and grains of cowpea. Composted tannery sludge led to an increase in Cr concentration in the soil. Among the humic substances, the highest Cr concentration was found in humin. The application rates of CTS significantly increased Cr concentration in leaves and grains.

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Tannery sludge compost amendment rates on soil microbial biomass of two different soils

Cited by 71 publications

References 30 publications

<b>Soil properties and cowpea yield after six years of consecutive amendment of composted tannery sludge

<b>Soil properties and cowpea yield after six years of consecutive amendment of composted tannery sludge

<b>Heavy metals and yield of cowpea cultivated under composted tannery sludge amendment

Chromium in Soil Organic Matter and Cowpea After Four Consecutive Annual Applications of Composted Tannery Sludge

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