Data/hora: 10/06/2024 07:16:08

Provedor de dados: | 87
País: | Brazil
Título: | Effects of 2,4-D Herbicide on Species of the Digitaria Genus
Autores: | GAZOLA,T.; DIAS,M.F.; DIAS,R.C.; CARBONARI,C.A.; VELINI,E.D.
Data: | 2019-01-01
Ano: | 2019
Palavras-chave: | Synthetic auxin; Digitaria insularis; Digitaria horizontalis; Hormesis.
Resumo: | ABSTRACT: The objective of this work was to evaluate the effects of the 2,4-D herbicide on the growth and development of Digitaria insularis and Digitaria horizontalis plants under different climatic conditions. Two greenhouse experiments were conducted in a completely randomized design, with 11 treatments (rates of the herbicide) and four replications. Rate-response curves were determined for the 2,4-D rates of 0, 50.37, 100.75, 201.5, 403, 806, 1,612, 3,224, 6,448, 12,896, and 25,792 g a.i. ha-1. The plants presented growth stimulus with low rates of 2,4-D in the autumn-winter period, but this stimulus was not found in the spring-summer period. The plants subjected to application of high rates of 2,4-D had significantly lower growth and development than the control, regardless of the climatic conditions. Therefore, auxin herbicides must be used with caution, mainly in periods of low temperatures, because any problems related to the application technology - which may cause the contact of plants with low rates of this herbicide - will promote the growth of plants of these species, hindering the control and favoring the dispersion of these plants.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100173
Editor: | Sociedade Brasileira da Ciência das Plantas Daninhas
Relação: | 10.1590/s0100-83582019370100131
Formato: | text/html
Fonte: | Planta Daninha  v.37 2019
Fonte: | info:eu-repo/semantics/openAccess