Caracterização morfoagronômico de genótipos de milho cultivados em região de baixa altitude

• DOI: https://doi.org/10.22533/at.ed.6492413044

• Palavras-chave: Genótipos, Rendimento de grão, Baixa altitude

• Keywords: Genotypes, Grain yield, Low altitude

• Abstract: The study aimed to evaluate the morphoagronomic performance of corn genotypes cultivated in the second harvest in a low altitude region. For this purpose, a field experiment was conducted in February 2021 in the agroclimatic region R7, located between latitude coordinates 15 °08'50.9'' South, longitude 39°18'33.9'' and average altitude of 403m. In the experiment, a randomized block design was used, with 14 treatments and three replications. The plots were composed of 4 rows of 5 linear meters, spaced 0.75m x 0.25m, totaling a population of 55.555 plants/ha1. In the experiment, male and female inflorescence, plant height, ear insertion height and grain yield were evaluated. The data were subjected to analysis of variance and the means were compared using the Scott Knott test at 5% probability. The results indicated significant differences, highlighting the genotypes SP1, WH508, SP-1, Namuli and DK8031 with early flowering and the genotype WH403 obtained the highest grain yield, obtaining 4,983 kg/ha1 and followed by nine genotypes evaluated.