Zinc content and phytomass accumulation in green corn fertilized with zinc sulphate
International Journal of Development Research
Zinc content and phytomass accumulation in green corn fertilized with zinc sulphate
Received 22nd March, 2020; Received in revised form 09th April, 2020; Accepted 04th May, 2020; Published online 25th June, 2020
Copyright © 2020, Flávio Sarmento de Oliveira et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
The low levels of zinc (Zn) in Brazilian semi-arid soil is one of the factors that most affect the yield and nutritional quality of the maize. The aim was to evaluate the influence of Zn doses via root and leaf on the production of phytomass and Zn contents in leaves and grains of green corn growing in alkaline soil. Two experiments were carried out under field conditions, in a randomized block design, with four blocks. In the first experiment five doses of Zn (0; 2.5; 5.0; 7.5 and 10.0 kg ha-1) via soil, were tested. In the second experiment, treatments was five doses of Zn (0; 0.5; 1.0; 1.5 and 2.0 gL-1) via leaf. The fertilization of green corn with zinc via soil increased the concentration of this nutrient in the soil and in the leaves, but it was not able to increase the production of phytomass, nor grains yield and the levels of Zn in grains. The supply of zinc via the leaves increases the leaf contents of Zn, dry mass of stem, leaves and ear, but does not affect the levels of Zn in green maize grains.
