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

• Autor(a) principal: Batista,Marcelo Augusto
• Data de Publicação: 2009
• Outros Autores: Pintro,José Carlos, Costa,Antonio Carlos Saraiva da, Tormena,Cássio Antonio, Bonato,Carlos Moacir, Batista,Michelli Fernandes
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Brazilian Archives of Biology and Technology
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000300004
• topic: Zea mays; phosphate fertilizers; solubility; toxicity

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.