Ação do maturador Ethephon na germinação de sementes e no ciclo da cultura do milho (Zea mays, L.)

• Autor(a) principal: SILVA, Gesse Otávio da
• Data de Publicação: 2023
• Outros Autores: VOLPONI, Igor Augusto
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Digital Unicesumar
• Texto Completo: http://rdu.unicesumar.edu.br/handle/123456789/9718
• topic: ácido 2-cloroetil fosfônico; Ethrel 720®; Zea mays L.; CNPQ::CIENCIAS AGRARIAS::AGRONOMIA

Zea mays, L. has great economic interest, however, climate change has put its cultivation at risk. Therefore, the present work aims to evaluate the effect of the Ethrel ripener, a precursor of Ethylene in the corn crop, by carrying out an experiment divided into two stages. The first stage took place in the field, with the formation of 5 treatments, through 5 replications in a Completely Randomized Design (DIC), according to the spraying time: T1- control (without product application); T2 - spraying 0.6 L/ha-1 of Ethrel (50 days after sowing); T3- with the same dose at 70 days; T4 – at 90 days; and T5 – at 110 days. And the second, carried out in the laboratory, with the purpose of observing the influence of the same product on seed germination through three treatments with 4 repetitions (T1- control; T2- seed treatment with 5 microliters of the product; and T3- with 10 microliters). The evaluated parameters consisted of: grain moisture; plant height; ear aspects; productivity; height, green and dry matter of seedlings. Regarding the field part, T3 and T4 stood out, where the reduction in moisture was not followed by a large drop in production. With regard to the laboratory part, significant results were observed in the treatment with 600 mg/L-1 of Ethrel, increasing all the biometric parameters analyzed. Finally, the results obtained showed that Ethrel is an important ally in accelerating the cycle and in the initial development of the corn crop