CHEMICAL CONTROL OF GARDEN SPURGE MATURE PLANTS (Chamaesyce hirta) IN THE FIELD

Autores/as

  • Naira Moreli de Freitas Universidade Estadual de Maringá
  • Eliezer Antonio Gheno Cooperativa Agropecuária e Industrial Celeiro do Norte
  • Celso Augusto Sato Teixeira Universidade Estadual de Maringá
  • Luiz Augusto Inojosa Ferreira Universidade Estadual de Maringá
  • Vanessa Francieli Vital Silva Universidade Estadual de Maringá
  • Rubem Silvério de Oliveira Jr Universidade Estadual de Maringá

DOI:

https://doi.org/10.28998/rca.21.11858

Palabras clave:

Euphorbia hirta, Garden spurge, Sequential application, Weed control.

Resumen

Chamaesyce hirta is a troublesome weed in producing regions of Brazil; however, little is known
about the control of adult plants. We evaluated the control of adult Chamaesyce hirta plants in the field. The
experiment was installed at COACEN, municipality of Sorriso - MT, in a randomized complete block design, with
four replicates. Treatments were arranged in a split plot factor, where plots received the application of 19 herbicides
in burndown and subplots received the sequential application of paraquat, glufosinate ammonium, or no herbicide,
nine days after the first application. Visual control evaluations were performed at 7, 14, 21 and 28 days after the
first application and at 5, 12 and 19 days after the second application. Sequential applications increased the level
of control of most treatments. Isolated glyphosate applications, without sequential application did not control C.
hirta. The addition of saflufenacil to glyphosate + 2,4-D mixture provides effective control with a single application.
The mixture of glyphosate + 2,4-D provided better control than glyphosate + chlorimuron-ethyl and was efficient
in controlling adult C. hirta plants, when used with sequential application of paraquat and ammonium glufosinate.

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Citas

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Publicado

2023-04-12

Número

Sección

Proteção de Plantas