Desempenho de cultivares de milho safrinha (Zea mays L.) para o município de Humaitá-AM

• Autor(a) principal: Quirino, Altino de Souza
• Data de Publicação: 2022
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional da UFAM
• Texto Completo: http://riu.ufam.edu.br/handle/prefix/6244
• topic: Hibridos; Competividade; Ambiente; Cultivo; CIENCIAS EXATAS E DA TERRA; CIENCIAS AGRARIAS; Milho - Cultivo - Humaitá (AM); Milho - Adaptação

Corn (Zea mays, L.) is cultivated in a large part of the Brazilian territory using different production systems. However, its production efficiency is still low, considering the potential of commercially available genetic material. Due to the large number of commercial corn cultivars, the speed of their replacement in the market and the variability of their agronomic characteristics, technicians and farmers need information for the correct choice of cultivars most suitable for the soil and climate conditions of their region. The objective of this research was to evaluate the performance of different maize cultivars in the off-season for the municipality of Humaitá-AM. The experiment was carried out at the Mangabeira Experimental Farm of the Instituto de Educação Cultura e Ambiente of the Federal University of Amazonas (UFAM), located on BR 230, km 3, right side, towards Humaitá- Porto Velho, coordinates 7°31' 49.9'' S and 63º03' 17.6'' W, with an elevation of 60 meters, in a natural field area. The variables evaluated were plant height, stem diameter, height of insertion of 1 ear, flowering, shoot dry mass, ear size, ear diameter, amount of grains per ear, weight of 1000 grains (g), grain yield (kg ha-1). The experimental design was installed in randomized blocks (DBC), with treatments that were at eight (8) corn cultivars, with three replications. Each plot had 10 crop rows per x 5 m in length. The spacing between rows was 0.50 m. The useful area was 6 central lines, leaving two lines on each side as borders. The data were submitted to analysis of variance (F test), and the means were compared by the Tukey test, at the 5% probability level, using the SISVAR® software. The cultivars that obtained the highest values ​​in grain yield were: KWS 9555 VIP3, KWS 9606 VIP3, KWS 9105 VIP3, and RB 9110 PRO2, with averages of 8,514.00; 7,670.00; 6,184.00 and 5,467.00 respectively. Therefore, they presented satisfactory characteristics for their cultivation in the region.