Control of globe fringerush ( Fimbristylis miliacea ) and selectivity to rice crop irrigated with bispyribac-sodium + metsulfuron-methyl associated with adjuvants

Abstract

This study aimed to evaluate the control of globe fringerush (Fimbristylis miliacea ) and selectivity to rice crop irrigated with an in-tank mixture of bispyribac-sodium + metsulfuron-methyl associated with adjuvants. The experiment was conducted in the municipality of Douradina, Paraná state, Brazil (23º12'32.0" South, 53º17'39.9" West), in the agricultural year of 2012/2013. An experimental randomized complete block design with ten treatments and four replications was used. The treatments consisted of applying an in-tank mixture of the herbicides bispyribac-sodium + metsulfuron-methyl at two doses (32+1.3 and 40+3.3 g ai ha-1) associated with the adjuvants Iharaguen(tm) (375 mL.ha-1), Orobor N1(tm) (75 mL.ha-1), LI 700(tm) (150 mL.ha-1) and TA 35(tm) (50 mL.ha-1), as well as weeded and unweeded control. Although the effectiveness of globe fringerush (F. miliacea ) control with the in-tank mixture of the herbicides bispyribac-sodium + metsulfuron-methyl associated with Iharaguen(tm) and Orobor N1(tm) has been significantly higher than the effectiveness of these herbicides associated with LI 700(tm) and TA 35(tm), there were no significant differences among the treatments in terms of selectivity and grains yield of the rice cultivar Epagri 108.

The residual effect of metsulfuron on soybean tolerant and non-tolerant to sulfonylureas

“…The herbicide metsulfuron has a broad spectrum of action, controlling mainly eudicotyledons plants and some species of monocotyledons (Rodrigues and Almeida, 2018). The herbicide, alone or in combination, is effective in the control of Conyza bonariensis (Vargas et al, 2007;Walker et al, 2013), Fimbristylis miliacea The residual effect of metsulfuron on soybean tolerant and non-tolerant to sulfonylureas (Tormena et al, 2016), Hordeum spontaneum (Izadi-Darbandi and Aliverdi, 2015), Cirsium arvense (Zargar et al, 2019), among others.…”

A deriva de glyphosate interfere no desenvolvimento e produtividade de arroz irrigado

“…Todavia, o monocultivo de arroz não é sustentável, observando-se redução da produtividade da cultura cujo fator que é mais favorecido por essa prática é o aumento da ocorrência de plantas daninhas. A interferência de plantas daninhas impacta negativamente à produtividade da cultura que pode chegar a perdas superiores a 85% (TORMENA et al, 2016), havendo a necessidade do manejo para evitar tais perdas (ANDRES et al, 2004;FREITAS et al, 2008;WALTER et al,2014). Os principais mecanismos de ação herbicidas utilizados para o manejo de plantas daninhas no arroz são acetolactato sintase (ALS), inibidores acetil coenzima-A carboxilase (ACCase), mimetizadores de auxinas (quinclorac) e inibidores do fotossistema II (SOSBAI, 2018).…”