Estudo da fitodisponibilidade do cobre em alguns solos do Estado do Paraná / Study of copper phytodisponibility in some soils of Paraná state, Brazil
Arq. biol. tecnol
; 40(3): 580-5, out. 1997. tab, graf
Article
em Pt
| LILACS
| ID: lil-247535
Biblioteca responsável:
BR16.1
RESUMO
The phytodisponibility of copper as a micronutrient was evaluated on soils from the third plateau of Parana State. The experiment was developed in greenhouse, using polyethylene pots of 2,5 L and samples of seven soils. The experimental design was a completely randomized, with three replications. The treatments were three doses of copper (0,0 - 2,5 and 5,0 mg dm-3 soil), using a solution of CuSO4 5H2O after liming and a corrective fertilization according to the rotine analysis. Soybean (Glycine max (L.) Merril) and corn (Zea mays L.) were used as test plants. After 45 days of seeding, the shoots of the plants were cut, dried in stove at 70§C until constant weight, then they were weighted, grounded and submitted to nitro-perchloric digestion. The copper contents in these plants were determinated by atomic absorption spectrometry. Copper addition didn't show a significant effects to the dry matter production of soybean and corn plants, but copper concentration increased in this dry matter, without significant differences betweeen the 2,5 and 5,0 mg dm-3 doses. Copper contents in soybean dry matter ranged from 1,5 to 7,3 mg.kg-1, while in the corn dry matter they ranged from 3,1 to 9,4 mg.kg-1
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Coleções:
01-internacional
Base de dados:
LILACS
Assunto principal:
Cobre
/
Rios
/
Ecologia
/
Meio Ambiente
Tipo de estudo:
Clinical_trials
País/Região como assunto:
America do sul
/
Brasil
Idioma:
Pt
Revista:
Arq. biol. tecnol
Assunto da revista:
BIOLOGIA
/
BIOTECNOLOGIA
Ano de publicação:
1997
Tipo de documento:
Article
País de publicação:
Brasil