ADAPTABILITY OF DIFFERENT MAIZE CULTIVARS SUBMITTED TO THE CLIMATIC CONDITIONS OF NORTHEAST OF PARÁ STATE

Abstract

ABSTRACT: The objective of this experiment was to evaluate the performance and adaptability of different commercial and non-commercial maize cultivars submitted to Dom Eliseu, Pará climatic conditions. The experiment was carried out at Flor do Ipê Farm, located in the municipality of Dom Eliseu, at km 22 of Highway BR-222, with geographic coordinate 4 ° 17'30.93 "S and 47 ° 48'38.54" W. The climate is characterized as Awi-type Köppen classification, ie rainy tropical climate with well-defined dry season. Air temperature (ºC) and rainfall (mm) were recorded through meteorological station belonging to APROSOJA - Brazilian Soybean Producers Association. The experiment was carried out in a completely randomized design with 12 cultivars of maize (Zea mays L.), 6 commercial and 6 non-commercial, with five replicates in each cultivar. The Sisvar Software was used for analysis of variance, with means comparison using the Tukey Test at 5% probability. The air temperature in the different months of the experimental period remained at tolerable levels for maize cultivation. The non-commercial cultivar that best adapted to Dom Eliseu's environment was DOWCOD030PW. For commercial cultivars the best adaptation to soil and climatic conditions was presented by 2B587PW. KEYWORDS: Adaptation, Agronomic characteristics, Productivity.