Selectivity of herbicides applied on St. Augustinegrass and Emerald turfs

Planta Daninha

Costa, N.V.¹  UNESP, Botucatu¹  Rodrigues, A.C.P.¹  Cardoso, L.A.¹  Unioeste, Rondon¹  Martins, D.¹ 

关键词: turfgrass;    herbicide;    phytotoxicity;    Stenotaphrum secundatum;    Zoysia japonica.;   

DOI  :  10.1590/S0100-83582010000100017

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 objective of this study was to evaluate the selectivity of herbicides applied on turfgrasses St. Augustinegrass (Stenotaphrum secundatum) and Emerald (Zoysia japonica) under field conditions. The experimental design was randomized blocks with four replications. The turfgrasses were cut with a motorized grass cutter to the height of 3 cm, followed by herbicide application. The treatments were: control, fluazifop-p-butyl (125  g  ha-1 ), sethoxydim+mineral oil (276 g ha-1 + 0.5% v v-1of Assist), bispyribac-sodium (25  g  ha-1 ), chlorimuron-ethyl (15  g  ha-1 ), ethoxysulfuron (150  g  ha-1 ), halosulfuron (112.5  g  ha-1 ), iodosulfuron-methyl (10  g  ha-1 ), metsulfuron-methyl (2,4 g ha-1), nicosulfuron (125  g  ha-1 ), pyrithiobac-sodium (140  g  ha-1 ), trifloxysulfuron-sodium (22.5  g  ha-1 ), 2,4-D (720  g  ha-1 ), quinclorac (375 g ha-1), atrazine(1,250  g  ha-1), bentazon (600  g  ha-1 ), linuron (1,350  g  ha-1 ), fomesafen (187.5  g  ha-1 ), lactofen (120  g  ha-1 ), oxadiazon (600  g  ha-1 ) and oxyfluorfen (720  g  ha-1 ). The following herbicides were found to have potential for selectivity of S. secundatum: ALS-inhibitors chlorimuron-ethyl, ethoxysulfuron, halosulfuron, iodosulfuron-methyl and metsulfuron-methyl, mimicking of auxin 2.4-D, the inhibitors of the atrazine and bentazon photosystem II and the inhibitors Protox fomesafem, lactofen and oxadiazon. For turfgrass Z. japonica, the following herbicides showed potential for selectivity: the ALS-inhibitors chlorimuron-ethyl, ethoxysulfuron, halosulfuron, metsulfuron-methyl and nicosulfuron, mimicking of auxin 2.4-D and quinclorac, the inhibitors of the atrazine and bentazon photosystem II and the inhibitors Protox fomesafen, lactofen and oxadiazon.

【 授权许可】

Unknown