Mineral composition and dry mass production of the corn plants in response to phosphorus sources and aluminum concentration

Mineral composition and dry mass production of the corn plants in response to phosphorus sources and aluminum concentration

The corn plants were evaluated with different phosphate fertilizer sources and aluminum (Al) concentrations in a sandy substrate. A totally randomized experiment design was set up with two corn plants in the pots containing 2 kg of a sandy substrate, two phosphate sources (Triple Super Phosphate - T...

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Published in:Brazilian archives of biology and technology Vol. 52; no. 3; pp. 541 - 548
Main Authors: Batista, Marcelo Augusto(Universidade Estadual de Maringá Departamento de Agronomia), Pintro, José Carlos(Universidade Estadual de Maringá Departamento de Agronomia), Costa, Antonio Carlos Saraiva da(Universidade Estadual de Maringá Departamento de Agronomia), Tormena, Cássio Antonio(Universidade Estadual de Maringá Departamento de Agronomia), Bonato, Carlos Moacir(Universidade Estadual de Maringá Departamento de Biologia), Batista, Michelli Fernandes(Universidade Estadual de Maringá Departamento de Agronomia)
Format: Journal Article
Language:English
Published: Tecpar 01-06-2009
Instituto de Tecnologia do Paraná (Tecpar)
Subjects:
phosphate fertilizers
solubility
toxicity
Zea mays
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Summary:The corn plants were evaluated with different phosphate fertilizer sources and aluminum (Al) concentrations in a sandy substrate. A totally randomized experiment design was set up with two corn plants in the pots containing 2 kg of a sandy substrate, two phosphate sources (Triple Super Phosphate - TSP or Arad Phosphate - AP) and four Al concentrations. When Al concentrations increased, pH (CaCl2) substrate values decreased. There was an increase in the calcium and phosphorus contents in the sandy substrates that received the TSP and AP sources. The calcium, magnesium, phosphorus, and potassium concentrations of the corn plant's shoot were higher in the TSP than without P and AP sources. When the Al concentration increased, the concentration values of the former elements decreased. The dry mass production of the corn plants responded positively to P sources. As the Al concentration increased, the dry mass values decreased significantly in the TSP source. Foram avaliadas plantas de milho submetidas a diferentes fontes de fertilizantes fosfatados e diferentes concentrações de alumínio em um substrato de areia. O experimento foi conduzido com duas plantas por vaso contendo 2 kg de areia, duas fontes de fósforo (Fosfato Supertriplo -TSP ou Fosfato de Arad -AP) e quatro concentrações de Al. Com o aumento das concentrações de Al houve diminuição dos valores de pH (CaCl2) do substrato. Os valores de cálcio e fósforo aumentaram no substrato nos tratamentos com TSP e AP. As concentrações de cálcio, magnésio, fósforo e de potássio das plantas de milho foram maiores em TSP do que nos tratamentos sem P ou com AP. Como o aumento da concentração de Al observou-se redução na concentração de cálcio, magnésio, fósforo e de potássio nas plantas. A produção de massa seca da parte aérea respondeu positivamente com as fontes de P. Com o aumentou da concentração de Al os valores de massa seca diminuíram significativamente com TSP.
Bibliography:10.1590/S1516-89132009000300004
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000300004
ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:1516-8913
1516-8913
1678-4324
DOI:10.1590/S1516-89132009000300004