Identificação e manejo de biótipos de Chloris polydactyla com resistência ou suscetibilidade diferencial ao glyphosate no Estado do Paraná

Revista Brasileira de Herbicidas

Arthur Arrobas Martins Barroso¹  Rayssa Fernanda dos Santos¹  Leandro Paiola Albrecht³  Henrique Fabricio Placido⁴  Alfredo Junior Paiola Albrecht⁷  Andreos dos Santos Becker⁷  Ricardo Victória Filho⁷ 

[1]Professor do Departamento de Ciências Agronômicas – Rua Pioneiro, 2153, Jardim Dallas – CEP 85950-000 – Palotina (PR), Brasil

[2]Rua Pioneiro, 2153, Jardim Dallas – CEP 85950-000 – Palotina (PR), Brasil

[3]Escola Superior de Agronomia Luiz de Queiroz, Av. Pádua Dias, 11 - CEP 13418-900, Piracicaba - SP, Brasil

[4]Escola Superior de Agronomia Luiz de Queiroz-USP, Av. Pádua Dias, 11- CEP 13418-900 - Piracicaba - SP

[5]Professor, Dr., titular do curso de agronomia na Escola Superior de Agronomia Luiz de Queiroz-USP, Av. Pádua Dias, 11- CEP 13418-900 - Piracicaba - SP

[6]Universidade Estadual Paulista Julio de Mesquita Filho – UNESP - Campus Jaboticabal, Departamento de Biologia Aplicada a Agropecuária. Via de Acesso Prof. Paulo Donato Castellane s/n, CEP: 14884-900, Jaboticabal, SP

[7]Universidade Federal do Paraná - Setor Palotina

关键词: capim branco;    controle alternativo;    graminicidas;    resistência de plantas daninhas;   

DOI  :  10.7824/rbh.v15i3.449

学科分类：农业科学（综合）

来源: Sociedade Brasileira da Ciencia das Plantas Daninhas (S B C P D) / Brazilian Society of Herb Science

【 摘 要 】

The emergence of resistant weeds has increased costs and affected the production of crops for weed interference with cultivation and loss of effectiveness of herbicides widely used with large spectrums control and low cost, such as glyphosate. Thus, the study aimed to identify populations ofC. polydactylaresistant or differential susceptibility to the herbicide glyphosate, at the State of Paraná, and establish its alternative control. It was collected biotypes suspected resistance in municipalities located in the West, Midwest and Northwest regions of state. Installed a test of resistant populations screening, in a completely randomized design with treatments 0, 450, 650 and 900 g a.e. ha -1glyphosate herbicide, with 4 repetitions, assessing visual control with 7, 14 and 21 days after application − DAA and accumulation of fresh matter. Determined the alternative control by plants from different populations subjected to treatments witness; glyphosate; quizalofop; haloxyfop; tepraloxydim, clethodim and the combination of these graminicides to glyphosate, by evaluating visual control at 14, 21 and 28 DAA and reduction of fresh matter. The state of Paraná has populations ofC. polydactylathat require high doses of glyphosate to decrease its fresh weight or achieve adequate levels of control, and an alert to the emergence of resistant populations. The study populations of this species were easily controlled with the association of glyphosate and clethodim, in a commercial dose. It is extremely important to rotate active ingredients and mechanisms of action on the rural property due to specific characteristics of the target population.

【 授权许可】

CC BY