Sensibility of weeds to the residual activity of pyrithiobac-sodium

Pereira Braz, Guilherme Braga; Oliveira Jr., Rubem Silvério de; Constantin, Jamil; Dan, Hugo Almeida; Gemelli, Alexandre; Rios, Fabiano Aparecido

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dc.creator	Pereira Braz, Guilherme Braga
dc.creator	Oliveira Jr., Rubem Silvério de
dc.creator	Constantin, Jamil
dc.creator	Dan, Hugo Almeida
dc.creator	Gemelli, Alexandre
dc.creator	Rios, Fabiano Aparecido
dc.date	2013-10-01
dc.date.accessioned	2022-03-21T20:07:16Z
dc.date.available	2022-03-21T20:07:16Z
dc.identifier	https://comunicatascientiae.com.br/comunicata/article/view/315
dc.identifier	10.14295/cs.v4i3.315
dc.identifier.uri	http://biblioteca-repositorio.clacso.edu.ar/handle/CLACSO/77620
dc.description	Pyrithiobac-sodium is a selective systemic herbicide for cotton, widely used for weed control in thiscrop. This herbicide has soil activity, but little is known about the effect of the residual in the weedscontrol. This study aimed to evaluate the effect of residual activity of pyrithiobac-sodium in thecontrol of important weeds of cotton crop. Five experiments were conducted (number of weeds) ingreen-house. The experiment was installed in a factorial arrangement (3 x 4) + 1, it was three timesof application of the herbicide before sowing (20, 10 and 0 DBS) and four doses of pyrithiobacsodium(28, 56, 84 and 112 g ha -1), and an additional treatment that served as a control withoutherbicide. Residual activity of pyrithiobac-sodium caused restriction of the vegetative growth of allweeds. The species that demonstrated high sensibility to the residual activity of pyrithiobac-sodiumwere, in descending order: apple of Peru (Nicandra physaloides), american black nightshade(Solanum americanum), buttonweed (Spermacoce latifolia), benghal dayflower (C. benghalensis)and morning glory (I. grandifolia).	en-US
dc.description	O pyrithiobac-sodium é um herbicida sistêmico seletivo para o algodoeiro, sendo amplamente utilizado para o controle de plantas daninhas nesta cultura. Este herbicida apresenta atividade no solo, porém pouco se conhece sobre os efeitos deste residual no controle de plantas daninhas. Este trabalho teve como objetivo avaliar o efeito da atividade residual do pyrithiobac-sodium no controle das principais plantas daninhas da cultura do algodoeiro. Foram conduzidos cinco experimentos (número de espécies avaliadas) em casa-de-vegetação. Cada experimento foi instalado em arranjo fatorial (3 x 4) + 1, sendo três épocas de aplicação do herbicida antes da semeadura (20, 10 e 0 DAS) e quatro doses de pyrithiobac-sodium (28, 56, 84 e 112 g ha-1), além de um tratamento adicional que serviu de testemunha sem herbicida. A atividade residual do pyrithiobac-sodium causou restrição no desenvolvimento vegetativo e todas as plantas daninhas. As espécies com maior sensibilidade a atividade residual do pyrithiobac-sodium, em ordem decrescente, foram: N. physaloides, S. americanum, S. latifolia, C. benghalensis e I. grandifolia. Sensibility of weeds to the residual activity of pyrithiobac-sodiumAbstractPyrithiobac-sodium is a selective systemic herbicide for cotton, widely used for weed control in thiscrop. This herbicide has soil activity, but little is known about the effect of the residual in the weedscontrol. This study aimed to evaluate the effect of residual activity of pyrithiobac-sodium in thecontrol of important weeds of cotton crop. Five experiments were conducted (number of weeds) ingreen-house. The experiment was installed in a factorial arrangement (3 x 4) + 1, it was three timesof application of the herbicide before sowing (20, 10 and 0 DBS) and four doses of pyrithiobacsodium(28, 56, 84 and 112 g ha -1), and an additional treatment that served as a control withoutherbicide. Residual activity of pyrithiobac-sodium caused restriction of the vegetative growth of allweeds. The species that demonstrated high sensibility to the residual activity of pyrithiobac-sodiumwere, in descending order: apple of Peru (Nicandra physaloides), american black nightshade(Solanum americanum), buttonweed (Spermacoce latifolia), benghal dayflower (C. benghalensis)and morning glory (I. grandifolia).	pt-BR
dc.format	application/pdf
dc.format	application/pdf
dc.language	por
dc.publisher	Federal University of Piauí	en-US
dc.relation	https://comunicatascientiae.com.br/comunicata/article/view/315/189
dc.relation	https://comunicatascientiae.com.br/comunicata/article/view/315/190
dc.source	Comunicata Scientiae; Vol. 4 No. 3 (2013); 244-254	en-US
dc.source	Comunicata Scientiae; v. 4 n. 3 (2013); 244-254	pt-BR
dc.source	2177-5133
dc.source	2176-9079
dc.subject	inibidor de acetolactato sintetase	pt-BR
dc.subject	Solanaceae	pt-BR
dc.subject	Rubiaceae	pt-BR
dc.subject	Commelinaceae	pt-BR
dc.subject	Convolvulaceae.	pt-BR
dc.title	Sensibility of weeds to the residual activity of pyrithiobac-sodium	en-US
dc.title	Sensibilidade de plantas daninhas à atividade residual do pyrithiobac-sodium	pt-BR
dc.type	info:eu-repo/semantics/article
dc.type	info:eu-repo/semantics/publishedVersion