Performance of Lipophilic Pre-Emergence Herbicides in no-Till and Conventional Soybean Cultivation Systems

Authors

  • Cyntia Airagna Fortes dos Santos Universidade Federal do Maranhão. MA, Brazil. https://orcid.org/0000-0002-1061-0414
  • Edmilson Igor Bernardo Almeida Universidade Federal do Maranhão. MA, Brazil.
  • Andreza Maciel de Sousa Universidade Federal do Maranhão, MA, Brazil. https://orcid.org/0000-0002-9660-425X
  • Lourrana Rhavenna Diogo Silva Universidade Federal do Maranhão, MA, Brazil.
  • Aldair De Souza Medeiros Universidade Federal do Piauí. PI, Brazil. https://orcid.org/0000-0002-6087-6181
  • Nítalo André Farias Machado Universidade Federal do Maranhão. MA, Brazil.
  • Patrício Gomes Leite Universidade Federal do Maranhão. MA, Brazil. https://orcid.org/0000-0001-5500-7865
  • Washington Da Silva Sousa Universidade Federal do Maranhão. MA, Brazil. https://orcid.org/0000-0002-6563-6814

DOI:

https://doi.org/10.17921/1415-6938.2025v29n4p978-994

Abstract

Soybean cultivation is main agricultural commodity of Brazil and has been expanding in different regions of this country, notably in the Amazon-Cerrado transition region, where studies on the integrated management of glyphosate-tolerant weeds (MIPD) and their impact on productivity are still in progress. In this sense, the objective was to analyze the performance of lipophilic pre-emergence herbicides on glyphosate-tolerant weeds in conventional and no-till production systems. For this purpose, a randomized block experiment was conducted under a 5×2 factorial arrangement with four replicates. The first factor consisted of five pre-emergence treatments, namely: Control (without herbicide), flumioxazin + pyroxasulfone, flumioxazin + imazethapyr, S-metolachlor, and S-metolachlor + fomesafen; while the second factor corresponded to two production systems: conventional and no-till. We looked at weed control efficiency, weed population, weed phenology, as well as leaf chlorophyll content, NDVI (Normalized Difference Vegetation Index), phytotoxicity, and soybean productivity. The results pointed to the occurrence of ten weeds shared by the conventional and no-till systems, among which five species have a record of herbicide resistance in brazilian soybean cultivation. The use of flumioxazine + pyroxasulfone in a no-till system (SPD) achieved a 37% higher yield than the control (without herbicide and without straw). The presence of straw on the soil (±17 t ha-1) contributed to the integrated management of glyphosate-tolerant weeds and increased the performance of lipophilic pre-emergence herbicides.

Keywords: Glycine max (L.) Merrill. Weed Seed Bank. Weed Survey. Integrated Weed Management. Herbicide Resistance.

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Published

2025-12-18

How to Cite

FORTES DOS SANTOS, Cyntia Airagna; BERNARDO ALMEIDA, Edmilson Igor; MACIEL DE SOUSA, Andreza; DIOGO SILVA , Lourrana Rhavenna; DE SOUZA MEDEIROS, Aldair; FARIAS MACHADO , Nítalo André; GOMES LEITE, Patrício; DA SILVA SOUSA , Washington. Performance of Lipophilic Pre-Emergence Herbicides in no-Till and Conventional Soybean Cultivation Systems. Ensaios e Ciência: Ciências Biológicas, Agrárias e da Saúde, [S. l.], v. 29, n. 4, p. 978–994, 2025. DOI: 10.17921/1415-6938.2025v29n4p978-994. Disponível em: https://ensaioseciencia.pgsscogna.com.br/ensaioeciencia/article/view/14277. Acesso em: 18 jun. 2026.

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Vol. 29 No. 4 (2025)

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Copyright (c) 2025 Cyntia Airagna Fortes dos Santos, Edmilson Igor Bernardo Almeida, Andreza Maciel de Sousa, Lourrana Rhavenna Diogo Silva , Aldair De Souza Medeiros, Nítalo André Farias Machado , Patrício Gomes Leite, Washington Da Silva Sousa

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