| Texto completo | |
| Autor(es): |
Silva, Marcelo de Almeida
[1]
;
Veliz, Jose Gerardo Espinoza
[2]
;
Sartori, Maria Marcia Pereira
[1]
;
Santos, Hariane Luiz
[1]
Número total de Autores: 4
|
| Afiliação do(s) autor(es): | [1] Sao Paulo State Univ, UNESP, Lab Ecophysiol Appl Agr LECA, Sch Agr Sci, Botucatu, SP - Brazil
[2] Guatemalan Sugarcane Res & Training Ctr CENGICANA, Santa Lucia Cotzumalguap - Guatemala
Número total de Afiliações: 2
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Science of The Total Environment; v. 806, n. 2 FEB 1 2022. |
| Citações Web of Science: | 0 |
| Resumo | |
The management of sugarcane ripening is essential to ensuring the supply of high-quality raw material for the sugar-alcohol industry; chemical ripeners are frequently used to accelerate sucrose accumulation in the stalks during harvesting. The potential ripening effect of a low dose of glyphosate was evaluated in sugarcane, along with its impact on productivity and sprouting in the next crop cycle. A field experiment was conducted in 2015 and 2016 using a randomized block design with eight replicates in a split-plot scheme, with the following treatments: (1) control with only water application, (2) glyphosate at a low dose of 1.8 g a.e. ha(-1) (corresponding to 0.005 L ha(-1) of the commercial product (cp)), and (3) glyphosate at the commercially recommended dose for a ripener at 180 g a.e. ha(-1) (corresponding to 0.50 L ha(-1) of the cp) applied at 60, 45, 30, and 15 days before harvest (DBH). The harvest was performed on May 25, 2016 (0 DBH), and a total of five periods were evaluated. This study showed that the application of a hormetic dose of glyphosate to stimulate sugarcane ripening is promising, despite the limited duration of the effect. The application of the hormetic dose (1.8 g a.e. ha(-1)) at 30DBH improved the technological quality of sugarcane in terms of Brix% juice, pol% cane, purity% juice, moisture% cane, reducing sugars, total reducing sugars, and total recoverable sugar. Additionally, it increased pol productivity, and did not affect ratoon sprouting in the subsequent cycle. Thus, this study provides a strategy for ripening management with a low environmental impact for sugarcane producers through a low (hormetic) dose of glyphosate. (C) 2021 Elsevier B.V. All rights reserved. (AU) | |
| Processo FAPESP: | 14/22585-3 - Efeito de maturadores na qualidade tecnológica, componentes metabólicos, poder calorífico do palhiço e residualidade de produtos em cana-de-açúcar |
| Beneficiário: | Marcelo de Almeida Silva |
| Modalidade de apoio: | Auxílio à Pesquisa - Programa BIOEN - Regular |