Cádmio, cromo, chumbo e zinco em plantas de milho e em latossolo após nove aplicações anuais de lodo de esgoto

Nogueira, Thiago Assis Rodrigues; Oliveira, Leyser Rodrigues; Melo, Wanderley José de; Fonseca, Ivana Machado; Melo, Gabriel Maurício Peruca de; Melo, Valéria Peruca de; Marques, Marcos Omir

doi:10.1590/s0100-06832008000500040

Cited by 25 publications

(16 citation statements)

References 25 publications

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“…The effect of organic wastes on the physicochemical characteristics of soil (De Maria et al, 2010;Araújo, 2011), their biological properties (Brady & Weil, 2002;Bueno et al, 2011) and crop yields (Nogueira et al, 2008;Araújo, 2011) has been investigated in numerous studies.…”

Section: Introductionmentioning

confidence: 99%

Industrial and urban organic wastes increase soil microbial activity and biomass

Boechat¹,

Santos

Accioly³

et al. 2012

Rev. Bras. Ciênc. Solo

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SUMMARYMicrobial processes have been used as indicators of soil quality, due to the high sensitivity to small changes in management to evaluate, e.g., the impact of applying organic residues to the soil. In an experiment in a completely randomized factorial design 6 x 13 + 4, (pot without soil and residue or absolute control) the effect of following organic wastes was evaluated: pulp mill sludge, petrochemical complex sludge, municipal sewage sludge, dairy factory sewage sludge, waste from pulp industry and control (soil without organic waste) after 2, 4, 6, 12, 14, 20, 28, 36, 44, 60, 74, 86, and 98 days of incubation on some soil microbial properties, with four replications. The soil microbial activity was highly sensitive to the carbon/nitrogen ratio of the organic wastes. The amount of mineralized carbon was proportional to the quantity of soil-applied carbon. The average carbon dioxide emanating from the soil with pulp mill sludge, corresponding to soil basal respiration, was 0.141 mg C-CO 2 100 g -1 soil h -1 . This value is 6.4 times higher than in the control, resulting in a significant increase in the metabolic quotient from 0.005 in the control to 0.025 mg C-CO 2 g -1 C mic h -1 in the soil with pulp mill sludge. The metabolic quotient in the other treatments did not differ from the control (p < 0.01), demonstrating that these organic wastes cause no disturbance in the microbial community.Index terms: microbial respiration, microbial carbon, microbial nitrogen, metabolic quotient, organic sludge.(1) Part of the dissertation of the first author, for a post-graduate degree in Agricultural Sciences, 2, 4, 6, 12, 14, 20, 28, 36, 44, 60, 74, 86

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Section: Introductionmentioning

confidence: 99%

Industrial and urban organic wastes increase soil microbial activity and biomass

Boechat¹,

Santos

Accioly³

et al. 2012

Rev. Bras. Ciênc. Solo

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“…since increased levels of this element influencing their development [25]. Crambe plants grown in soil supplied, on average, with 13 mg Cr kg −1 , resulted in a 20% reduction in dry weight of leaves compared to control.…”

Section: Resultsmentioning

confidence: 98%

Effect of Copper, Zinc, Cadmium and Chromium in the Growth of Crambe

Tito¹,

Chaves²,

Fernandes³

et al. 2014

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Crambe is a promising crop for biodiesel production. However, there is no much information available about techniques and research regarding the best performance in different regions to explore its potential. The objective of this study was to evaluate the effect of cadmium, chromium, copper and zinc in the development of crambe. The study was carried out in a greenhouse and it consisted of four independent experiments in completely randomized design, with three replications. Four metals with five levels were applied: 0, 10, 15, 20 and 25 mg•kg −1 for copper, cadmium, chromium; and 0, 20, 30, 40 and 50 mg•kg −1 for zinc, in order to evaluate the growth of crambe. Data were subjected to analysis of variance and comparison of means by Tukey test at 1 and 5% significance. Despite doses of cadmium, chromium, copper and zinc in growing crambe have influenced in some of the evaluated variables of the plants, in general, their development was similar in relation to doses and the metals applied. The importance of cultivating crambe is related to grain production, based on this, copper and cadmium decreased this production.

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“…Segundo Nogueira et al (2008), a forte retenção do Pb no solo controla sua disponibilidade. Para Malavolta (2006), o Pb se acumula nas paredes da célula das raízes e, em certas condições, se formam precipitados amorfos identificados como fosfato de chumbo, no caso do milho.…”

Section: Concentrações De Nutrientes Na Parte Aéreaunclassified

Avaliação agronômica de biossólidos tratados por diferentes métodos químicos para aplicação na cultura do milho

Barros

Andreoli

Souza³

et al. 2011

Rev. bras. eng. agríc. ambient.

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RESUMOA presença de patógenos e metais potencialmente tóxicos, são as principais limitações do lodo de esgoto para a reciclagem agrícola. Este trabalho avaliou a aplicação de biossólidos, tratados quimicamente, em um Latossolo Vermelho distrófico, na produção de matéria seca e na absorção de nutrientes pela cultura de milho. O lodo de esgoto foi tratado com cal, hipoclorito de sódio, peróxido de hidrogênio, ácido acético e peracético. Nos biossólidos tratados com os ácidos orgânicos fez-se a neutralização com cal. Os biossólidos foram aplicados em vasos, na dose de 50 t ha -1 , cultivado com milho pelo período de 55 dias, quando foram determinadas a produção de matéria seca e concentração de nutrientes na parte aérea das plantas. A maior produção de matéria seca foi observada no tratamento com ácido peracético e a menor no tratamento com cal. A aplicação de biossólido aumentou os teores dos macronutrientes na parte aérea das plantas. Os teores de Zn, Cu, Mn, Fe e Pb nas plantas, estiveram abaixo dos limites fitotóxicos. Os biossólidos mostraram ser uma importante fonte de nutrientes para o desenvolvimento da cultura de milho. Os tratamentos alternativos do lodo podem ser eficientes no controle de patógenos e facilitam a reciclagem agrícola de biossólidos.Palavras-chave: lodo de esgoto, produção vegetal, reciclagem agrícola Agronomic evaluation of biosolids treated by different chemical methods for cultivation of maize ABSTRACT The presence of pathogens and potentially toxic metals are the main limitations for the agronomic recycling of sewage sludge. This study evaluated the application of biosolids, chemically treated in a distrophic Red Latosol in the production and in the absorption of nutrients by the maize crop. The sludge was treated with lime, sodium hypochlorite, hydrogen peroxide, peracetic and acetic acids. Biosolids treated with organic acids were neutralized with lime. The biosolids were applied in pots at a dose equivalent to 50 t ha -1 and maize was grown for a period of 55 days, and later the dry matter production and concentrations of nutrients were determined in the shoots. The highest dry matter production was observed in treatment with peracetic acid (APA) and the lowest in the treatment with lime. The application of biosolids increased the levels of macronutrients in the plant shoots. The concentration levels of Zn, Cu, Mn, Fe and Pb in the plants were below the phytotoxic limits. The biosolids showed to be an important source of nutrients for the initial development of the maize crop. Alternative treatments of the sludge can be effective in controlling pathogens and facilitate agricultural recycling of biosolids.

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Cádmio, cromo, chumbo e zinco em plantas de milho e em latossolo após nove aplicações anuais de lodo de esgoto

Cited by 25 publications

References 25 publications

Industrial and urban organic wastes increase soil microbial activity and biomass

Industrial and urban organic wastes increase soil microbial activity and biomass

Effect of Copper, Zinc, Cadmium and Chromium in the Growth of Crambe

Avaliação agronômica de biossólidos tratados por diferentes métodos químicos para aplicação na cultura do milho

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