Open AccessComponents of Maize Crop as a Function of Doses of Polymerized Urea
Author(s) -
Luiz Leonardo Ferreira,
Uirá do Amaral,
Cairo Souza Silva,
Carmen Rosa da Silva Curvêlo,
Alexandre Igor de Azevedo Pereira
Publication year - 2019
Publication title -
journal of agricultural science
Language(s) - English
Resource type - Journals
eISSN - 1916-9760
pISSN - 1916-9752
DOI - 10.5539/jas.v11n11p185
Subject(s) - urea , husk , agronomy , cultivar , nitrogen , leaching (pedology) , fertilizer , factorial experiment , crop , ammonia volatilization from urea , mathematics , chemistry , horticulture , biology , botany , biochemistry , ecology , statistics , organic chemistry , soil water
The efficiency of nitrogen fertilizer applications such as urea is reduced as a function of volatilization and leaching losses. For this reason, the producers have opted for the use of polymerized urea. Therefore, the objective of this work was to evaluate the production components in maize culture as a function of doses of polymerized urea. The experimental design was a 5 × 3 factorial, totaling fifteen treatments, corresponding to five doses Polyblen® 39% N of polymerized urea (0, 250, 500, 750 and 1000 kg ha-1) and three cultivars of maize (30A37, MG580 and MG600). The variables were analyzed after harvest, being: plant height, ear height commercial, stem diameter, leaf area, plant leaf area, ear diameter without husks, ear diameter with husks, ear length without husks, ear length with husks, number of grains per row, number of grains per ear, grain yield, number of rows per ear, 100-grain weight. Regarding the production components in the corn crop, the presence of Polyblen® polymerized urea influenced all variables analyzed. While varieties 30A37, MG580 and MG600 demonstrated a significant increase in their productivity averages.