Seletividade de herbicidas a Stylosanthes capitata e a S. macrocephala

Verzignassi, J. R.; Pereira, F. A. R.; Fernandes, C. D.; Vida, João Batista

doi:10.7824/rbh.v4i3.37

Cited by 3 publications

(4 citation statements)

References 1 publication

(1 reference statement)

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“…In soybean crops, sulfentrazone application led to low phytotoxicity and decrease in plant stature (Osipe et al, 2014). However, in contrast to results found by this study, sulfentrazone was found to exhibit no selectivity in forage plants 'Estilosantes Campo Grande' (Verzignassi et al, 2005).…”

Section: /7contrasting

confidence: 99%

Selectivity of pre-emergent herbicides in bird’s-foot trefoil crops

Agostinetto

Silva

Zandoná

et al. 2020

Agraria

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Competition with weeds and lack of selective herbicides registered for bird's-foot trefoil crops affect their development and limit productivity. Therefore, this study aimed at evaluating selectivity of pre-emergent herbicides in bird's-foot trefoil crops. Experiments were carried out in a greenhouse and on a field where the following herbicides were evaluated and compared with the control: imazethapyr, diclosulam, flumetsulam, metribuzin, s-metolachlor, sulfentrazone, clomazone and isoxaflutole. Regarding variables under evaluation, phytotoxicity (PHYTO), plant stature, dry mass of the aerial part (DMAP) and dry mass of roots (DMR) were evaluated in the greenhouse, while plant population, PHYTO and DMAP were assessed on the field. The criterion to determine selectivity were: PHYTO below 15% and not reducing the plant population nor morphological variables, by comparison with the control. The variables were negatively affected by the herbicides clomazone, metribuzin, isoxaflutole, diclosulam, s-metolachlor, in which the crop population was reduced in 98, 92, 83, 63, 48 and 22%, respectively. Following the criteria, only the herbicide sulfentrazone as a pre-emergente is selective to bird's-foot trefoil crop (cultivar 'São Gabriel').

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Section: /7contrasting

confidence: 99%

Selectivity of pre-emergent herbicides in bird’s-foot trefoil crops

Agostinetto

Silva

Zandoná

et al. 2020

Agraria

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“…Despite being chemically different, imidazolinones, sulfonylureas and triazolopyrimidines act in the same site and usually trigger similar phytotoxicity symptoms in plants . Similar damage was caused by imazethapyr and chlorimuron-ethyl to Stylosanthes capitata and S. macrocephala plants (Verzignassi et al, 2005). On the other hand, alfalfa (Silva et al, 2003) and white clover (Machado et al, 2013) crops exhibited damage caused by chlorimuron-ethyl, but it was not caused by imazethapyr.…”

Section: Resultsmentioning

confidence: 89%

Selectivity of post-emergent herbicides for weed control in birdsfoot trefoil crops

et al. 2020

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“…En Stylosantes capitata y S. macrocephala se encontró bajo nivel de fitotoxicidad a la dosis de 100 g i.a. ha -1 (Verzignassi et al, 2005). En Phaseolus vulgaris, Ríos y Pérez (1990) y Castro (1993) observaron porcentajes menores a 10% de fitotoxicidad con dosis de 75 a 150 g i.a.…”

Section: Resultados Y Discusión Fitotoxicidad De Imazetapir Sobre a unclassified

“…ha -1 ) fue 80% (Figura 3). Verzignassi et al (2005) en Stylosantes capitata y S. macrocephala muestra resultados prometedores para el control de malezas con imazetapir 100 g i.a. ha -1 en postemergencia.…”

Section: Control De Malezas En a Bicolorunclassified

Fitotoxicidad de herbicidas postemergentes sobre Adesmia bicolor (Poir.) DC y control de malezas asociadas

Autrán¹,

Puricelli²,

Andrés³

2013

AgriS

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Un mejor conocimiento del manejo de las especies nativas de leguminosas forrajeras como Adesmia bicolor puede ayudar a lograr una mayor calidad y estabilidad en la producción de los pastizales. No existe información disponible en la Argentina sobre el tipo y dosis de herbicidas adecuados para el control de malezas en A. bicolor. Los objetivos fueron evaluar el efecto fitotóxico de herbicidas postemergentes a diferentes dosis sobre A. bicolor y el control de las malezas latifoliadas que crecen asociadas en ensayos a campo durante 2009 y 2010. El diseño fue de parcelas divididas donde la parcela mayor fue el tipo de herbicida (2,4-DB e imazetapir) y la parcela menor la dosis (1/4X, 1/2X, 1X, 2X, 4X, 8X, siendo X = 250 g i.a. ha-1 para 2,4-DB y X=100 g i.a. ha-1 para imazetapir), con tres repeticiones para cada tratamiento. La materia seca de A. bicolor y el control de malezas se ajustaron a curvas de dosis-respuesta. Se observó efectos fitotóxicos aun con muy baja dosis de 2,4-DB, mientras que imazetapir mostró baja fitotoxicidad para las dosis entre 25 y 100 g a.i. ha-1. El control de malezas con ambos herbicidas fue mayor al 80% con dosis de 1X.

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Seletividade de herbicidas a Stylosanthes capitata e a S. macrocephala

Cited by 3 publications

References 1 publication

Selectivity of pre-emergent herbicides in bird’s-foot trefoil crops

Selectivity of pre-emergent herbicides in bird’s-foot trefoil crops

Selectivity of post-emergent herbicides for weed control in birdsfoot trefoil crops

Fitotoxicidad de herbicidas postemergentes sobre Adesmia bicolor (Poir.) DC y control de malezas asociadas

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