Acceso usuarios
Herbert Nacke, A.C. Gonçalves Junior, J.R. Stangarlin, Daniel Schwantes, Leonardo Strey, Ivair André Nava
Zinc (Zn) can be considered the primal micronutrient for the corn culture (Zea mays L.), being, its use, widespread in Brazil and the world, however, studies correlating levels and sources of this element are needed to provide better recommendations for each region and soil type, and thus enable the better use of fertilizers on farms. The objective of this study it was evaluate the effect of different sources and levels of Zn applied in corn for the western region of Paraná. This way, it was studied the behavior of eight sources and four levels of Zn on the productivity, yield components and leaf contents of Zn of corn plants in a Rhodic Eutrudox. Significant differences among the sources and levels in the availability of Zn for plants and among levels for productivity was founded. For yield components the treatments had no effect. This way, under the experiment conditions, the fertilization with Zn provides increase of the income for the corn crop, however, levels greater than 4.0 kg ha-1 are not justified.
