Efeito do nitrogênio e do lodo de esgoto na nutrição do feijoeiro

Lobo, Thomaz Figueiredo; Filho, Hélio Grassi; Büll, Leonardo Theodoro; Souza, Flávia Luize Pereira de

doi:10.18378/rvads.v10i2.2662

Cited by 9 publications

(12 citation statements)

References 5 publications

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“…The BRS 321 and Neon genotypes grains presented similar B contents, independently of the treatment (Table 5). Lobo, Grassi Filho, and Brito (2011) reported minor micronutrient exportation with the lowest N content, including exportation of B, but did not observe any interactions between N and B doses.…”

Section: Contents and N And B Amountsmentioning

confidence: 76%

<b>Different nitrogen and boron levels influence the grain production and oil content of a sunflower cultivar

et al. 2017

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ABSTRACT. Nitrogen is essential for plant growth and development and directly influences both grain production and oil content. Boron has been studied in sunflower cultivation due to high demand of this culture for this nutrient. This study aimed to evaluate the N and B differential supply effect on the grain and oil production of sunflower plants. The experiment was conducted in a greenhouse and used two sunflower hybrids: BRS 321 and Neon. N and B were applied via nutritive solution according to the following treatments: B + 50 N (2.49 kg ha N at planting). Analyses of total N and B in all collected plant parts were performed, as well as measurements of grain production for each chapter and oil extraction at the end of the cycle. The association between B fertilization and a greater amount of N fertilization was essential to BRS 321 oil production. Regarding grain production at lower levels of N fertilization, Neon presented the best response to B application.Keywords: Helianthus annuus L., oilseed, total N, oil extraction. Diferentes níveis de Nitrogênio e Boro influenciam a produção de grãos e óleo em cultivares de girassolRESUMO. O nitrogênio é essencial para o crescimento e desenvolvimento das plantas e tem influência direta na produção de grãos e conteúdo de óleo. O boro tem sido bastante estudado no cultivo de girassol, devido a alta exigência desta cultura por este nutriente. Este trabalho teve por objetivo avaliar o efeito de nitrogênio e boro na produção de grãos e óleo em plantas de girassol. O experimento foi conduzido em casa de vegetação utilizando-se dois híbridos: BRS 321 e Neon. N e B foram aplicados em solução nutritiva: B + 50 N (2,49 kg de B ha no plantio). Ao final do ciclo foi analisado os teores de N e B total em todas as partes das plantas, produção de grãos por capítulo e teor de óleo. A combinação entre o fornecimento de B com a maior adubação nitrogenada foi essencial para a produção de óleo pelo híbrido BRS 321. Em relação à produção de grãos com menor adubação nitrogenada Neon apresentou a melhor resposta à aplicação B. Palavras-chave:Helianthus annuus L, oleaginosa, N-total, extração de óleo.

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Section: Contents and N And B Amountsmentioning

confidence: 76%

<b>Different nitrogen and boron levels influence the grain production and oil content of a sunflower cultivar

et al. 2017

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“…The minimal and maximal fertilizations recommended for sunflower vary from 40 to 80 kg N ha -1 (Lobo et al, 2011). Thus, the highest values observed in the treatment of 100 kg N ha -1 , in most analyzed variables, show that it is possible to apply higher concentrations of the leachate (under the physicochemical conditions and in the plant development stages used in the present study); however, new studies and especially field analyses are necessary.…”

Section: Resultsmentioning

confidence: 73%

Sanitary landfill leachate as a source of nutrients on the initial growth of sunflower plants

Júnior

Gondim

Pereira

et al. 2016

Rev. bras. eng. agríc. ambient.

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The aim of this study was to evaluate the initial growth of sunflower seedlings under different concentrations of sanitary landfill leachate, considering the feasibility of its use as source of nutrients for agricultural production. Biometric and vigor variables were analyzed through the measurements of collar diameter, shoot height, number of leaves and shoot and root fresh and dry matters, from January to February 2015. The experimental design was completely randomized in a 5 x 4 factorial scheme: five leachate concentrations (0, 40, 60, 80 and 100 kg N ha-1) x four harvest periods (14, 21, 25 and 29 days after sowing), with five replicates each containing two plants. The data were subjected to analysis of variance and polynomial regression, and the results of the last harvest (29 DAS) were compared by Tukey test (p ≤ 0.05). The use of sanitary landfill leachate increased all analyzed variables in sunflower plants when compared to the control plants (without leachate), especially in the treatment of 100 kg N ha-1. There was no inhibitory effect of the leachate on the initial growth of sunflower seedlings under adopted experimental conditions.

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“…Sewage sludge application is a beneficial alternative to recycle organic matter and nutrients as it improves soil physical, chemical, and biological properties, as well as improve vegetation establishment in degraded environments and assist the nutrition of agricultural crops (BORGES et al, 2009;LOBO et al, 2015;LU et al, 2012;SAMPAIO et al, 2016). However, before being used in agricultural crops and in addition to meeting the nutritional needs of plants and improving soil characteristics, sewage sludge needs to comply with the principles of environmental safety, with safe levels of heavy metals and offering no chemical or microbiological risk to human health or environment.…”

Section: Resultsmentioning

confidence: 99%

“…This material has in its composition high contents of nutrients and organic matter that could be reused, increasing crop productivity and decreasing the dependence on chemical fertilizers (CHIBA et al, 2008;LOBO et al, 2015;LOZADA et al, 2015). In some countries, such as the United States, Australia, France, the United Kingdom, and Spain, agricultural recycling of sludge is widespread, with some regions disposing up to 80% of the sludge generated at their stations for soil applications (BOURIOUG…”

mentioning

confidence: 99%

Characterization of sewage sludge generated in Rio de Janeiro, Brazil, and perspectives for agricultural recycling

Abreu

Leles

Alonso

et al. 2017

SCA

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Sanitary sewage collection and treatment is a serious environmental problem in Brazilian cities, as well as the destination of solid waste resulting from this process, i.e. the sewage sludge, a substance rich in organic matter and nutrients, which is normally discarded in landfills. The aim of this study was to characterize the sewage sludge generated in four treatment stations in Rio de Janeiro State, Brazil and check if they meet the legal criteria of the National Environment Council (CONAMA), Resolution No. 375/2006. It also focused on analyzing the perspectives for its agricultural recycling based on the potential demand for main agricultural crops grown in Rio de Janeiro State. Samples from eight sewage sludge lots from four treatment stations located in the metropolitan area of Rio de Janeiro were analyzed. These stations receive and treat only domestic sewage by activated sludge system. For chemical and biological characterization of these lots, representative samples were collected and analyzed according to parameters of CONAMA Resolution No. 375/2006. In order to analyze the perspectives of agricultural recycling of sewage sludge in Rio de Janeiro State, 10 crops with the largest cultivated area in the state were surveyed and analyzed which of them are apt to receive sewage sludge as fertilizer and/or soil amendment. To determine the potential demand for sewage sludge in agriculture, the area occupied by these crops were multiplied by each fertilizer recommendation considering the sewage sludge as fertilizer. The analyzed sludge presented a high content of nutrients and organic matter and was included in the parameters of heavy metals, pathogenic agents, and bacteriological indicators stipulated by CONAMA Resolution No. 375/2006. The agricultural panorama of Rio de Janeiro State is favorable for agricultural recycling of sewage sludge since there is a great potential demand for this residue and, among the 10 agricultural crops with the largest cultivated area in the state, sludge can be used as fertilizer or soil amendment in eight of them. The implementation of a State Sewage Sludge Recycling Program could dispose of this material in a more sustainable way, as well as improve the quality of agricultural soils and reduce costs with chemical fertilizers, bringing positive results for sanitation companies and producers. Key words: Biosolid. Solid waste. Organic fertilization. ResumoA coleta e tratamento do esgoto sanitário é um grave problema ambiental nas cidades brasileiras, bem como a destinação do resíduo sólido resultante desse processo, o lodo de esgoto, substância rica em matéria orgânica e nutrientes, que normalmente é descartada em aterros sanitários. Objetivou-se com este trabalho caracterizar o lodo de esgoto gerado em quatro estações de tratamento do estado do Rio de Janeiro e verificar se os mesmos atendem aos critérios legais presentes na resolução CONAMA n°375/2006. Com o trabalho visa-se ainda analisar as perspectivas para a reciclagem agrícola deste material, com base na demanda p...

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Efeito do nitrogênio e do lodo de esgoto na nutrição do feijoeiro

Cited by 9 publications

References 5 publications

<b>Different nitrogen and boron levels influence the grain production and oil content of a sunflower cultivar

<b>Different nitrogen and boron levels influence the grain production and oil content of a sunflower cultivar

Sanitary landfill leachate as a source of nutrients on the initial growth of sunflower plants

Characterization of sewage sludge generated in Rio de Janeiro, Brazil, and perspectives for agricultural recycling

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