TRATAMENTO DE SEMENTES DE MILHO COM ESTIMULANTES DE CRESCIMENTO VISANDO ADAPTAÇÃO AS MUDANÇAS CLIMÁTICAS

Abstract

Corn is one of the largest arable crops in Brazil and contributes in a large share to the country's exports. The main function of the amino acids application in various crops is to activate physiological metabolism, leading the plant to exit a post-stress condition. Therefore, the objective was to evaluate the germination and vigor of corn seeds treated with a growth stimulant under abiotic stress conditions. The experiments were conducted at the Seed Analysis Laboratory at IF Goiano, Campus de Iporá – GO using the corn hybrid DKB 360, and the seeds were treated with the commercial product Speed Advantage®, at a dose of 4 mL. For both treatments, the following will be evaluated: Percentage and index of germination speed, length, dry mass, field emergence and seedling emergence speed. For thermal stress, it was possible to verify that the treated corn seeds only presented satisfactory results when subjected to temperatures suitable for germination. As for water stress, there was no significant interference using growth stimulant for seeds. Therefore, it is concluded that the treatment at the dose used did not have a positive effect on the vigor and germination aspects of corn seeds exposed to thermal and water stress conditions.