AGRONOMIC PERFORMANCE OF CORN GROWN WITH SOURCES AND DOSES OF BORON

• Main Author: Lopes, Wytalo Oliveira
• Publication Date: 2023
• Other Authors: Buso, Wilian Henrique Diniz
• Format: Article
• Language: eng
• Source: Revista de Agricultura Neotropical
• DOI: 10.32404/rean.v10i4.7319
• Download full: https://periodicosonline.uems.br/index.php/agrineo/article/view/7319
• topic: Zea mays; Micronutriente; Produtividade; Zea mays; Micronutrient; Yield

Corn is a crop of great socio-economic importance due to its high energy value and use in human and animal food. This study aimed to evaluate the agronomic characteristics of corn grown with boron (B) sources and doses. The experimental design was a randomized block arranged in a 3x4 factorial scheme with four replications. Three B sources (boric acid, borax, and ulexite) and four doses (0; 1.5; 3.0, and 4.5 kg ha-1) were evaluated. The experiment was carried out over two consecutive crop seasons. The variables analyzed were plant height, first ear insertion height, ear length, number of grain rows per ear, number of grains per row, 1000-grain weight, and grain yield. The data was submitted for analysis of variance, and the means were compared using the Tukey test at 5% significance. For ear length, there was an interaction between the factors in the first year, and at a dose of 1.5 kg ha-1, Boric Acid was superior to Borax and Ulexite. Regarding grain yield, there was a difference between the sources and doses in the two crop seasons, and Ulexite was superior to the other sources. The regression analysis estimated the highest grain yield with doses of 1.6 kg ha-1 and 2.03 kg ha-1 in the first and second crop seasons, respectively. There was no difference between the sources and doses of B for plant height, first ear insertion height, number of grain rows per ear, number of grains per row, and 1000-grain weight.