Abstract

Irrigation and nitrogen fertilization are management practices that have positive results for the corn crop. This study aimed at evaluating the effect of nitrogen fertilization and irrigation on agronomic traits of sweet corn. Two experiments were carried out in two crop seasons (winter/spring and summer/autumn), in a split-plot design, with the main plots consisting of four irrigation levels (50 %, 75 %, 100 % and 125 % of the crop evapotranspiration - ETc) and subplots consisting of four nitrogen doses (0 kg ha-1, 100 kg ha-1, 200 kg ha-1 and 300 kg ha-1), applied at the V3 and V8 stages, via urea, in a randomized blocks design experiment, with four replications. Leaf nitrogen content, root depth, plant height, stem diameter, ear yield and water use efficiency were evaluated. In the winter/spring season, nitrogen fertilization did not affect yield, while in the summer/autumn season the dose that maximized yield was 300 kg ha-1. Sweet corn showed better results when irrigated with replacements of 50 % and 125 % of ETc, respectively in the summer/autumn and winter/spring seasons.

Details

Title
Effect of irrigation and nitrogen fertilization on agronomic traits of sweet corn
Author
deSouza, Epitácio José; Fernando França daCunha; Fernando Fagner Magalhães; Thiago Ramos daSilva; Osvaldir Feliciano dosSantos
Section
Crop Science
Publication year
2015
Publication date
Jul-Sep 2015
Publisher
Universidade Federal de Goiás - Escola de Agronomia e Engenharia de Alimentos
e-ISSN
19834063
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
1765394126
Copyright
Copyright Universidade Federal de Goiás - Escola de Agronomia e Engenharia de Alimentos Jul-Sep 2015