Soils Copper Content
Mostrando 1-12 de 16 artigos, teses e dissertações.
-
1. Physiological responses of soybean (Glycine max (L.) Merrill) cultivars to copper excess
Abstract Abstract: Successive applications of copper fungicides on vines have resulted in increased copper content in vineyard soils over the years. This high copper content has affected the growth of young vines in eradicated vineyards. Thus, the cultivation of annual species for a few years is an alternative to copper phytostabilization, because it would b
An. Acad. Bras. Ciênc.. Publicado em: 02/12/2019
-
2. Rhizophagus Clarus and Phosphorus in Crotalaria juncea: Growth, Glomalin Content and Acid Phosphatase Activity in a Copper-Contaminated Soil
ABSTRACT Crotalaria juncea is used as plant cover in grape vineyards in Brazil, which usually present soils with high copper (Cu) levels due to the application of Cu-based phyto-sanitary products. Under this condition an increase growth and cover of C. juncea is needed to improve the phytoremediation processes in those soils. Some alternatives to achieve thi
Rev. Bras. Ciênc. Solo. Publicado em: 26/07/2018
-
3. Copper and zinc accumulation, fractionation and migration in vineyard soils from Santa Catarina State, Brazil
ABSTRACT The purpose of this study was to evaluate Cu and Zn migration and fractions in sandy soil of vineyards. In Urussanga (SC), Brazil, soil samples were collected from a 4-year-old and 15-yearold vineyard, and from a forested area. In the soils, the chemical characteristics of Cu and Zn were analyzed by the EDTA method, which determines the fraction ava
Bragantia. Publicado em: 18/12/2017
-
4. Characterization of the core microbiota of the drainage and surrounding soil of a Brazilian copper mine
Abstract The core microbiota of a neutral mine drainage and the surrounding high heavy metal content soil at a Brazilian copper mine were characterized by 16S rDNA pyrosequencing. The core microbiota of the drainage was dominated by the generalist genus Meiothermus. The soil samples contained a more heterogeneous bacterial community, with the presence of bot
Genet. Mol. Biol.. Publicado em: 03/11/2015
-
5. Clay content drives carbon stocks in soils under a plantation of Eucalyptus saligna Labill. in southern Brazil
Soil carbon accumulation is largely dependent on net primary productivity. To our knowledge, there have been no studies investigating the dynamics of carbon accumulation in weathered subtropical soils, especially in managed eucalyptus plantations. We quantified the seasonal input of leaf litter, the leaf decomposition rate and soil carbon stocks in an commer
Acta Bot. Bras.. Publicado em: 2014-06
-
6. Monitoramento ambiental de zinco em produtos agrícolas / Environmental monitoring of zinc in agricultural products
Large areas have been affected by heavy metals in concentrations which may pose environmental hazard. Due to increased industrial activity and highly technical agriculture, it becomes critical to monitor the levels of heavy metals in soil, because plants behave as a mechanism for transfer of contaminants from soil to higher levels of the food chain. Ingestio
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/10/2012
-
7. Extraction in chemistry: humic substances in soils and copper in cachaça / Estratégias de extração em química : substâncias húmicas em solos e cobre em cachaça
The goal of the extraction strategies here developed was to obtain final products with efficiency and reliability in a time interval as short as possible. The proposed methods are inexpensive and easily applied for different samples. The first extraction strategy proposed deals with humic substances, HS, removal in peat soils aiming the development of an ext
Publicado em: 2009
-
8. Método Monte Carlo aplicado à análise do transporte de cobre em sedimento de rio
As transformações neoliberais da política econômica internacional provocaram profundas alterações no mundo do trabalho no Brasil a partir da década de 1990, especialmente no que diz respeito à precarização das relações de trabalho, na ampliação da informalização e na criação de novas formas de produção como alternativa ao desemprego. Cont
Publicado em: 2007
-
9. Doses de Cd, Pb, Cu, Zn e Ni em latossolos: efeitos no solo e em plantas de alface e feijão / Doses of Cd, Pb, Cu, Zn and Ni in Oxissols: efects in soil and in plants of lettuce and common beans
Two experiments were carried out in greenhouse, aiming to study the absorption of cadmium, lead, copper, zinc and nickel and their distribution in plants of lettuce and common beans. The comercial cultivars of alface (Regina de Verão) and common beans (Carnaval) were grown under increasing doses of cadmium (0, 1, 2, 4, 8 and 16 mg/dm3), lead (0, 23, 46, 92,
Publicado em: 2006
-
10. Adsorção e dessorção de cobre em solos sob aplicação de lodo de esgoto e calda bordalesa / Adsorption and desorption of copper in soils under sewage-sludge and bordeaux mixture application
The introduction of heavy metals in soil could be effectuated in differents ways, being the applications of sewage-sludge and industrial residues the most studied of them. However, traditional agricultural practices can contribute to take metals to the soil as well, through the use of mineral fertilizers, pesticides and also organic manure.The objectives of
Publicado em: 2005
-
11. Acid phosphatase from the microalgae Selenastrum capricornutum : extraction, characterization and effect of agriculture pollutants / Fosfatase acida da microalga Selenastrum capricornutum : extração, caracterização e efeito de poluentes de origem agricola
Selenastrum capricornutum is an unicellular green algae widely distributed in freshwater and soils among the world. Because this cosmopolitan characteristic its use is recommended by national and international protocols in ecotoxicity studies. Algae acid phosphatase plays important roles in the metabolism such as decomposing organic phosphates into free phos
Publicado em: 2005
-
12. Behavior of B, Zn, Cu, Mn e Pb in contaminated soil under plant cultivation and organic matter addition for metal toxicity amelioration / Comportamento de B, Zn, Cu, Mn e Pb em solo contaminado sob cultivo de plantas e adição de fontes de matéria orgânica como amenizantes do efeito tóxico
Two pot trials were carried out using a heavy metal accidentally contaminated soil. In the first one it was evaluated the plant absorbing, translocating and accumulating power for zinc, copper, manganese, lead and boron by the following vegetal species: Brassica juncea, Raphunus sativus L., Hybiscus cannabinus and Amaranthus crentus, so they could help in th
Publicado em: 2005