Resposta da cultura do milho (Zea mays L.) 角 aplica o de boro e de zinco no solo = Corn (Zea mays L.) culture response to boron and zinc soil application

作者：Nestor Jamami; Leonardo Theodoro Bull; Juliano Corulli Correa; Joo Domingos Rodrigues

来源：Acta Scientiarum - Agronomy, 2006.

• boro
• zinco
• teores foliares
• produ o de gr os
• Zea mays L.
• boron
• zinc
• leaf content
• yield

O presente trabalho foi conduzido em Latossolo Vermelho amarelo sob condi es de campo, com milho h赤brido AG 1043, utilizandose3 doses de boro (0, 1 e 2 kg ha1) e 3 doses de zinco (0, 2 e 4 kg ha1). Foram feitas avalia es aos 30, 60 e 90 dias ap車s a emerg那ncia (DAE) do conte迆do foliar de nutrientes, caracter赤sticas qu赤micas do solo aos 60 DAE e rendimento de gr os. Os resultados indicaram que a aplica o de boro e de zinco n o resultou em eleva o dos teores foliares desses nutrientes, nem em ganhos de produtividade, sendo os teores iniciais de B e Zn do solo suficientes para a produtividade atingida. The present work was carried out on Oxisol under field conditions, with hybrid corn (AG 1043), using three doses of boron (0, 1 and 2 kg/ha) and three doses of zinc (0, 2 and 4 kg/ha). On the thirtieth, sixtieth and ninetieth days of emergency, chemical analysis was performed to verify the content of nutrients in the leaves and also analysis to verify chemical characteristics in the soil in the sixtieth day after emergency. The results of the application of boron and zinc showed that there was an increase neither in the content of both leaves＊ nutrients, nor in productivity, being the initial content of boron and zinc in the soil before the experiment enough to the yield reached.