SELECTIVITY OF PRE-EMERGENT HERBICIDES IN SWEET POTATO CULTIVARS DEVELOPED FOR ETHANOL PRODUCTION

Authors

  • Ronaldo Pereira Lima Universidade Federal do Tocantins
  • Anderson de Oliveira Pereira
  • Gabriel Duarte de Oliveira
  • Rogério Cavalcante Gonçalves
  • Eduardo Andrea Lemus Erasmo https://orcid.org/0000-0002-5167-4262
  • Márcio Antônio da Silveira
  • Solange Ságio Universidade Federal do Tocantins

DOI:

https://doi.org/10.20873/Agroenergia_2024_v11_n7_14

Abstract

The use of sweet potato for ethanol production has been widely studied. However, in the literature, there are few studies on the selectivity of herbicides for sweet potato cultivars for industrial purposes. The objective of this study was to evaluate the effects of pre-emergent herbicides applied to sweet potato. An experiment was conducted in the field, using a randomized complete block design (RCBD), in a 3 x 2 + 1 factorial scheme, with factor 1: the cultivars (Amanda, Carolina Vitória and Brazlândia Roxa), factor 2: the herbicides (S-metolachlor, Atrazine + S-metolachlor and a control treatment:no application), with four replications. Data were submitted to an analysis of variance and compared by the Tukey test at a 5% probability level. Analyses of dry matter content of the roots (DMR), phytotoxicity, dry mass of the aerial part (DMA), productivity, starch content of the tuberous root and ethanol productivity estimate were performed. The results indicated that the herbicides S-metolachlor and Atrazine + S-metolachlor caused damage in most treatments in the initial phase of the crop. However, S-metolachlor did not cause significant losses in productivity, DMR, starch and ethanol, proving that it can be used for weed control. The application of Atrazine + S-metolachlor did not influence some characters but promoted significant losses of ethanol.

Keywords: Ipomoea potatoes; biofuel; herbicide selectivity.

Published

2024-10-29

How to Cite

Pereira Lima, R., de Oliveira Pereira, A., Duarte de Oliveira, G., Cavalcante Gonçalves, R., Andrea Lemus Erasmo, E., da Silveira, M. A., & Ságio, S. (2024). SELECTIVITY OF PRE-EMERGENT HERBICIDES IN SWEET POTATO CULTIVARS DEVELOPED FOR ETHANOL PRODUCTION. DESAFIOS - Revista Interdisciplinar Da Universidade Federal Do Tocantins, 11(7). https://doi.org/10.20873/Agroenergia_2024_v11_n7_14

Issue

Section

Dossiê: Agroenergia Digital