ABSTRACT:The objective of this study was to verify the efficiency of the control of white mold on soybean with the use of fungicides applied alone and in rotation, at different growth stages and in a mixture of two active ingredients at three locations: Arapoti, PR, Mauá-da-Serra, PR and Pinhão, PR, Brazil. The fungicides used were carbendazim (Ca), thiophanate methyl (Tm), procymidone (Pr) and fluazinam (Fl). The experiments consisted on 17 treatments and 4 replications in a randomized block design. The analyzed variables were severity, incidence, number of sclerotia and yield. Mauá-da-Serra and Pinhão presented the highest incidences (31% and 29.8% in the control, respectively). At these two locations most of treatments with fungicides decreased the incidence and production of sclerotia, when compared to control; however, no differences in terms of yield were observed. Arapoti presented the lowest incidence (15.8% in the control) where most of treatments with fungicides did not present differences for the variables incidence, production of sclerotia and yield, when compared to the control. No differences were also observed for severity in any of three locations. In conclusion, fungicides applied in soybean areas with historically white mold incidence up to 31% can reduce the disease incidence and sclerotia production levels.
Uma grande variedade de oleaginosas pode ser utilizada como matéria prima na produção de biodiesel, como soja, algodão e canola entre outras. A Canola (Brassica napus) é uma espécie de oleaginosa que apresenta alto teor de lipídios, sendo largamente utilizada para esse fim em alguns países da Europa. Este trabalho teve como objetivo caracterizar os lipídios de sementes de canola cultivada em Tibagi, região dos Campos Gerais, visando uso na produção de biodiesel. Foram utilizadas sementes colhidas em lavoura comercial da safra de inverno de 2013. O sistema de extração de óleo utilizado foi extração contínua por solvente. As propriedades dos lipídios obtidos foram determinadas com relação à massa relativa de lipídios, massa específica e estabilidade oxidativa, que tiveram média de 370,4 g kg-1, 873 kg m-³, e 10,01 horas, respectivamente. A composição qualitativa de ácidos graxos foi avaliada pela Espectroscopia de Ressonância Magnética Nuclear de 1H. Pelas análises foi constatada a presença de ácidos Oleico (C18:1), Linoléico (C18:2) e Linolênico (C18:3).
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2025 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.