<b>Drift of sub-doses of glyphosate in young plants of Varjão (<i>Parkia multijuga<i>, Benth.)</b>

Authors

  • Rubens Marques Rondon Neto UNEMAT - Universidade do Estado de Mato Grosso, Campus Alta Floresta
  • Kleiber Moura de Oliveira UNEMAT - Universidade do Estado de Mato Grosso, Campus Alta Floresta
  • Oscar Mitsuo Yamashita UNEMAT - Universidade do Estado de Mato Grosso, Campus Alta Floresta

DOI:

https://doi.org/10.5777/paet.v3i3.1073

Keywords:

phytotoxicity, herbicide, native species

Abstract

This work aimed to evaluate the response to toxicity of different sub-doses of glyphosate in young plants of varjão (Parkia multijuga, Benth.). The experiment was installed in the experimental area of UNEMAT – State University of Mato Grosso, in Alta Floresta – Mato Grosso state. The treatments tested were three sublethal rates of glyphosate (T1-6%, T2-12%, T3-24% of the recommended dose of 3.0 L ha-1) and T4-control (without application). After 7, 14, 21, 28 days and 6 months of the application of the herbicide, it was performed measurements of the height and diameter of the cervix of plants and given the notes of phytotoxicity. After 6 months of the application of the herbicide, it was found that the increasing doses of glyphosate caused injuries in the leaves and reduction of growth in height in plants of Parkia multijuga, there was low index of mortality, however, it was verified a significant improvement in all treatments.

Author Biographies

Rubens Marques Rondon Neto, UNEMAT - Universidade do Estado de Mato Grosso, Campus Alta Floresta

Engenheiro Florestal, doutor em Silvicultura, professor do Depto. de Engenharia Florestal da UNEMAT - Universidade do Estado de Mato Grosso, Campus Alta Floresta. No ensino e pesquisa atua nas áreas: produção de sementes emudas florestais, reflorestamento com espécies nativas da Amazônia e Cerrado, recuperação de áreas degradadas e sistemas agroflorestais.

Kleiber Moura de Oliveira, UNEMAT - Universidade do Estado de Mato Grosso, Campus Alta Floresta

Academico do curso de Engenharia Florestal da UNEMAT- Universidade do Estado de Mato Grosso, Campus Alta Floresta.

Oscar Mitsuo Yamashita, UNEMAT - Universidade do Estado de Mato Grosso, Campus Alta Floresta

Engenheiro Agronomo, doutor em Agricultura Tropical, professor do Depto. de Agronomia da UNEMAT - Universidade do Estado de Mato Grosso, Campus Alta Floresta. No ensino e pesquisa atua nas áreas: controle de plantas daninhas, herbicidas e fitotoxidade causada por herbicidas.

Published

10-09-2011

Issue

Section

Articles