Seletividade e eficácia de herbicidas inibidores da enzima accase na cultura da mamona


Autoria(s): Maciel, C. D. G.; Silva, T. R. B.; Poletine, J. P.; Velini, Edivaldo Domingues; Zanotto, Maurício Dutra; Martins, F. M.; Gava, F.
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

20/05/2014

20/05/2014

01/07/2011

Resumo

This experiment aimed to evaluate the selectivity and efficacy of ACCase-inhibiting herbicides in castor bean crop, at Paraguacu Paulista, São Paulo, during the 2002/03 agricultural season. The experimental design used was randomized complete blocks, with eleven treatments and four replicates, constituted by the following herbicides and adjuvants: fluazifop-p-butyl 313 g ha(-1)) + Agral (TM) 0.2% v/v); sethoxydim 322 g ha(-1)) + Assist (TM) 0.5% v/v); haloxyfop-methyl 120 g ha(-1)) + Assist (TM) 0.5% v/v); clethodim+ fenoxaprop-p-ethyl 75 g ha(-1)) + Assist (TM) 0.5% v/v); quizalofop-pethyl 125 g ha(-1)) + Assist (TM) 0.5% v/v); clethodim 156 g ha(-1)) + Assist (TM) 0.5% v/v); propaquizafop 175 g ha(-1)) + Assist (TM) 0.5% v/v); tepraloxydim 400 g ha(-1)) + Dash (TM) 0.5% v/v); butroxydim 100 g ha(-1)) + Dash (TM) 0.5% v/v); isoxaflutole 60 g ha(-1)) and weed-free check. At the moment of application, castor bean plants presented 4 to 6 leaves and Cenchrus echinatus, 1 to 5 tillers. AL Guarany 2002 cultivar presented high selectivity to ACCase-inhibiting herbicides, without visible symptoms of phytotoxicity in 14 DAA days after application), except for tepraloxydim, whose symptoms persisted until 21 DAA, and isoxaflutole HPPD inhibiting), which showed injuries in older leaves and significant yield reduction. C. echinatus infestation was efficiently controlled by ACCase-inhibiting herbicides between 14 and 21 DAA (>= 95.0%).

Formato

609-616

Identificador

http://dx.doi.org/10.1590/S0100-83582011000300015

Planta Daninha. Vicosa: Univ Federal Vicosa, v. 29, n. 3, p. 609-616, 2011.

0100-8358

http://hdl.handle.net/11449/39844

S0100-83582011000300015

WOS:000296064900015

S0100-83582011000300015.pdf

Idioma(s)

por

Publicador

Univ Federal Vicosa

Relação

Planta Daninha

Direitos

openAccess

Palavras-Chave #Ricinus communis #phytotoxicity #control #yield
Tipo

info:eu-repo/semantics/article