Soil Acidification
Mostrando 1-12 de 26 artigos, teses e dissertações.
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1. Sustainability assessment of sludge and biogas management in wastewater treatment plants using the LCA technique
Resumo Reatores de manta de lodo anaeróbio de fluxo ascendente (UASB), usados no tratamento de esgoto, geram dois subprodutos que podem ser utilizados: lodo e biogás. O objetivo do presente estudo foi realizar a avaliação da sustentabilidade de quatro diferentes cenários de tratamento e destinação final do lodo biológico e biogás, numa Estação de
Rev. Ambient. Água. Publicado em: 10/10/2019
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2. Valorização de resíduos de ágata em argamassas e concretos: avaliação do ciclo de vida
RESUMO O uso de resíduos oriundos do processo de beneficiamento de ágata (pó de ágata) em argamassas e concretos de cimento Portland é viável tecnicamente por suas propriedades mecânicas e de durabilidade. Porém, não existem pesquisas que avaliem o perfil ambiental dos materiais produzidos. O presente estudo visa avaliar os impactos ambientais poten
Matéria (Rio J.). Publicado em: 10/06/2019
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3. Lime and calcium-magnesium silicate in the ionic speciation of an Oxisol
ABSTRACT Plant residues and certain fertilizers accelerate soil acidification and increase the levels of aluminum-Al+3 in soils under no-tillage (NT). Silicates act as acidity amendments and as a source of silicon as in H4SiO4. An increase in the pH of soil solution causes the deprotonation of H4SiO4 and generates the anionic form (H3SiO4−). The aim of thi
Sci. agric. (Piracicaba, Braz.). Publicado em: 2017-08
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4. Functional antagonism between nitrogen-fixing leguminous trees and calcicole-drought-tolerant trees in the Cerrado
ABSTRACT The Cerrado is the largest savanna of South America and its physiognomy varies from savanna to woodlands. There are two main types of woodlands in the Cerrado: dystrophic woodlands, dominated by N-fixing leguminous trees (LEG), and mesotrophic woodlands dominated by non-leguminous drought-tolerant trees (DRY), which are calcicoles and sensitive to A
Acta Bot. Bras.. Publicado em: 30/01/2017
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5. Distribution of copper in soil and rice system of Hainan Island, China
ABSTRACT This research aimed to discover the distribution and the primary influence factors of Cu in the soil-rice systems of tropical farmland. Soil samples of farmland and rice plant (stalk and polished rice) from the western region of Hainan Island were collected and studied. The results showed that the average Cu content in the topsoil of the study area
Braz. arch. biol. technol.. Publicado em: 20/10/2016
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6. Soil Fertility and Electrical Conductivity Affected by Organic Waste Rates and Nutrient Inputs
ABSTRACT The composition of organic waste (OW) and its effect on soil processes may change soil fertility and electrical conductivity (EC). The side effects of waste use in crop fertilization are poorly understood for Brazilian soils. This study examined the effect of the addition of 15 different organic wastes to Oxisols and a Neosol on pH, base saturation,
Rev. Bras. Ciênc. Solo. Publicado em: 15/08/2016
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7. ORGANIC MATTER AND HUMIC FRACTIONS OF A HAPLIC ACRISOL AS AFFECTED BY COMPOSTED PIG SLURRY
The goal of this study was to investigate the effect of composted pig slurry (PS) on the organic matter concentration and distribution of humic acid (HA), fulvic acid (FA) and humin (HU) fractions. The fractions were quantified following the addition of composted PS to the soil, which was produced with no acidification (T2) or with acidification with H3PO4 (
Quím. Nova. Publicado em: 2016-01
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8. AVALIAÇÃO DAS POTENCIALIDADES DAS TERRAS, ADEQUAÇÃO DO USO DAS TERRAS E INDICADORES DE QUALIDADE DOS SOLOS: subsídios para o planejamento conservacionista no perímetro irrigado de Mirorós (Ba). / EVALUATION OF THE LAND POTENTIALS, LAND USE ADEQUACY AND SOIL QUALITY INDICATORS: subsidies for conservationist planning in the irrigated Perimeter of Mirorós (Ba).
The practice of irrigated agriculture represents an increase of agricultural productivity, especially for areas with water deficit. Lands are frequently characterized erroneously which, coupled with lacking conservation measures, imposes serious consequences for the environment. In reality, any land use and intensive soil management when carried out unsustai
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/05/2010
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9. Características de solos construídos após mineração de carvão relacionadas ao processo de construção e à composição do material utilizado
A mineração de carvão a céu aberto envolve a remoção do solo e de camadas geológicas, que devem ser repostos na seqüência original, visando a reabilitação das áreas mineradas. Este processo altera as características originais do solo e da paisagem. Neste sentido, perfis de solos construídos há 24 e 2 anos, em duas áreas mineradas no municípi
Publicado em: 2010
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10. Relações entre a mineralogia, fertilidade, acidez e macrofauna em latossolos do cerrado sob pastagem
The Cerrado region occupies approximately 24% of Brazilian territory, making it the second biggest biome in South América, exceeded only by the Amazon Rainforest. The majority of the soils of the region were described as being acid, with a low capacity for cation exchange and high saturation by aluminium. Pastures cover 117 million hectares, of which 54 mil
Publicado em: 2008
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11. Efeito do superfosfato triplo (32P) na absorção do fósforo do fosfato natural pelas plantas de milho e soja / Effect of triple superphosphate (32P) on phosphate rock phosphorus uptake by maize and soybean plants
The efficiency of phosphate rock (PR) can be improved applying it together with watersoluble P fertilizer. Four experiments were carried out in the greenhouse of the Soil Fertility Laboratory, CENA/USP (Centro de Energia Nuclear na Agricultura - Universidade de São Paulo), with maize (Zea mays L.) and soybean [Glycine max (L.) Merr.] grown in a dystrophic T
Publicado em: 2007
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12. Biofertilizantes de rochas fosfatadas e potássicas com enxofre inoculado com Acidithiobacillus na adubação da uva (Vitis vinifera L.) em planossolo do vale do São Francisco
A produção de biofertilizantes de rochas é um processo prático que reduz o consumo de energia e aumento da disponibilidade de nutrientes para as plantas, sem promover poluição ambiental. O teor de nutrientes dos biofertilizantes com P e K, varia com o método de preparo e com o material utilizado. Atualmente são denominados biofertilizantes os adubos
Publicado em: 2007