Pagnoncelli Junior, F.B. Vidal, R.A. Trezzi, M.M. Gallon, M. Brusamarello, A.P.

Characterization of ethoxysulfuron herbicide selectivity in common bean cultivars

Publicação on-line; 24 ref.; 1 table; 2 illus.; Summaries (En, Pt)



ABSTRACT - In literature, there are few studies evaluating the response of different
bean cultivars to herbicides, particularly the ALS enzyme inhibitors. The objective of
this study was to evaluate the selectivity of common bean cultivars to the herbicide
ethoxysulfuron and to select cultivars that are more tolerant to it. An experiment was
conducted in a greenhouse, in a completely randomized experimental design with
four replications. Factors consisted in 20 bean cultivars (IPR Eldorado, IPR Siriri, IPR
Gralha, IPR 81, IPR Uirapuru, IPR Colibri, IPR Tuiuiú, BRS Esplendor, IPR Tangará,
IPR Juriti, IPR Corujinha, IPR Andorinha, IPR Curió, BRS Campeiro, BRS Pérola, BRS
Notável, BRS Estilo, UTF 3, UTF 5 e UTF 6), and four doses of ethoxysulfuron (0, 50,
100 and 200 g ha-1) were used. At the dose of 200 g ha-1, the reduction of the shoot
dry matter of plants ranged from 30 to 80%, indicating that there was high variability
in the response of bean cultivars to the herbicide. The bean cultivars classified as
more tolerant to ethoxysulfuron are: IPR 81, IPR Uirapuru, BRS Estilo, IPR Gralha and
BRS Pérola, while the less tolerant cultivars are: IPR Eldorado, IPR Tuiuiú, IPR Tangará,
IPR Curió, UTF 3, UTF 5 and BRS Esplendor.

Keywords: Phaseolus vulgaris, sulfonylureas, tolerance, GGE biplot.


RESUMO - Na literatura, são poucos trabalhos que avaliam a resposta de diferentes
cultivares de feijão a herbicidas, principalmente aos inibidores da enzima ALS. Os
objetivos deste trabalho foram avaliar a seletividade de cultivares de feijão comum
ao herbicida ethoxysulfuron e selecionar cultivares mais tolerantes ao herbicida.
Um experimento foi conduzido em casa de vegetação em delineamento experimental
inteiramente casualizado com quatro repetições. Os fatores foram constituídos
por 20 cultivares de feijão (IPR Eldorado, IPR Siriri, IPR Gralha, IPR 81, IPR
Uirapuru, IPR Colibri, IPR Tuiuiú, BRS Esplendor, IPR Tangará, IPR Juriti, IPR
Corujinha, IPR Andorinha, IPR Curió, BRS Campeiro, BRS Pérola, BRS Notável,
BRS Estilo, UTF 3, UTF 5 e UTF 6) e quatro doses de ethoxysulfuron (0, 50, 100 e
200 g ha-1). Na dose de 200 g ha-1 a redução da massa da parte aérea seca das
plantas variou entre 30 e 80%, indicando que ocorreu elevada variabilidade na
resposta dos cultivares de feijão ao herbicida. Os cultivares de feijão classificados
como mais tolerantes ao ethoxysulfuron foram: IPR 81, IPR Uirapuru, BRS Estilo,
IPR Gralha e BRS Pérola, enquanto os cultivares menos tolerantes foram: IPR
Eldorado, IPR Tuiuiú, IPR Tangará, IPR Curió, UTF 3, UTF 5 e BRS Esplendor.

Palavras-chave: Phaseolus vulgaris, sulfonilureias, tolerância, GGE biplot.


PHASEOLUS VULGARIS
FEIJÃO
HERBICIDA