Controle químico e mecânico de plantas daninhas em áreas em recuperação

Vinícius Morais Machado; José Barbosa Santos; Israel Marinho Pereira; Cássia Michelle Cabral; Rodrigo Oliveira Lara; Cristiany Silva Amaral

doi:10.7824/rbh.v11i2.153

Authors

Vinícius Morais Machado Universidade Federal dos Vales do Jequitinhonha e Mucuri
José Barbosa Santos Universidade dos Vales do Jequitinhonha e Mucuri
Israel Marinho Pereira Universidade dos Vales do Jequitinhonha e Mucuri
Cássia Michelle Cabral Universidade dos Vales do Jequitinhonha e Mucuri
Rodrigo Oliveira Lara Universidade dos Vales do Jequitinhonha e Mucuri
Cristiany Silva Amaral Universidade dos Vales do Jequitinhonha e Mucuri

DOI:

https://doi.org/10.7824/rbh.v11i2.153

Keywords:

glyphosate, paraquat, metabolic coefficient

Abstract

The objective of this study was to evaluate the effects of application of glyphosate and paraquat compared to mowing to control invasive grasses in degraded areas. For the present study, the area was divided into two areas with different values of penetration resistance of soil and the fresh weight of the shoots. In each environment were selected five plots of 6x6 m². Each plot was divided into four subplots receiving treatments: glyphosate (1,44 kg ha^-1), paraquat (0,40 kg ha^-1), mowing and mechanical control (without herbicide and mowing). Evaluations were carried out on measurements of photosynthetically active radiation intercepted by the grass after treatment application, and estimating the total microbial activity on the basis of the evaluated and a control area. It has been found that cutting is treatment that allows higher incidence of light on the ground and paraquat application that allows a lower incidence of light. The plots treated with paraquat was hardly the arrival of new species, but shoots of the species present before. The highest rates of metabolic coefficient were found in the environment to be recovered. However, other recovery techniques must be adopted concurrently with the management for the control of species weeds.

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Author Biographies

Vinícius Morais Machado, Universidade Federal dos Vales do Jequitinhonha e Mucuri

Engenheiro Florestal, Mestrando no Programa de Pós Graduação em Ciência Florestal, Universidade dos Vales do Jequitinhonha e Mucuri - Campus JK - Rodovia MGT 367 – KM 583, Nº 5000 – Alto da Jacuba – 39100-000. Diamantina, MG.

José Barbosa Santos, Universidade dos Vales do Jequitinhonha e Mucuri

Engenheiro Agrônomo, doutor, professor. do curso de Agronomia, Universidade dos Vales do Jequitinhonha e Mucuri - Campus JK - Rodovia MGT 367 – KM 583, Nº 5000 – Alto da Jacuba – 39100-000. Diamantina, MG.

Israel Marinho Pereira, Universidade dos Vales do Jequitinhonha e Mucuri

Engenheiro Florestal, doutor, professor do curso de Engenharia Florestal, Universidade dos Vales do Jequitinhonha e Mucuri - Campus JK - Rodovia MGT 367 – KM 583, Nº 5000 – Alto da Jacuba – 39100-000. Diamantina, MG.

Cássia Michelle Cabral, Universidade dos Vales do Jequitinhonha e Mucuri

Bióloga, Mestranda no Programa de Pós Graduação em Ciência Florestal, Universidade dos Vales do Jequitinhonha e Mucuri - Campus JK - Rodovia MGT 367 – KM 583, Nº 5000 – Alto da Jacuba – 39100-000. Diamantina, MG.

Rodrigo Oliveira Lara, Universidade dos Vales do Jequitinhonha e Mucuri

Engenheiro Florestal, Mestrando no Programa de Pós Graduação em Ciência Florestal, Universidade dos Vales do Jequitinhonha e Mucuri - Campus JK - Rodovia MGT 367 – KM 583, Nº 5000 – Alto da Jacuba – 39100-000. Diamantina, MG.

Cristiany Silva Amaral, Universidade dos Vales do Jequitinhonha e Mucuri

Engenheiro Florestal, Mestrando no Programa de Pós Graduação em Ciência Florestal, Universidade dos Vales do Jequitinhonha e Mucuri - Campus JK - Rodovia MGT 367 – KM 583, Nº 5000 – Alto da Jacuba – 39100-000. Diamantina, MG.