NDLI: Eficiência do fungicida do grupo químico das carboxamida + estrobilurina no controle da ferrugem asiática em diferentes estádios da soja

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Eficiência do fungicida do grupo químico das carboxamida + estrobilurina no controle da ferrugem asiática em diferentes estádios da soja

Content Provider	Semantic Scholar
Author	Totoli, Diego Souza Soares, João P. Alberton, Odair
Copyright Year	2017
Abstract	The purpose of this study was to establish the best moment for applying fungicide in the control of Asian rust (Phakospsora pachyrhizi) in soybean. In order to do so, the application stage of the fungicide from the carboxamide + strobirulin chemical group (ELATUS®) was assessed under field conditions. A randomized block experimental design with eight treatments and four replications was used. Each block was formed by four lines of five meters in length with a total area of 9 m². The treatments were: T1 - one application at the V5 stage; T2 - on application at the R1 stage; T3 - one application at the R3 stage; T4 - one application at the R5 stage; T5 - two applications, one at V5 and the other, 21 days after the 1st application (DAA1); T6 - two applications, one at R1 and the other at 21 DAA1; T7 - three applications: one at V5, the second 21 DAA1, and the third 21 DAA2; and T8 – control. The disease severity index, number of plants m-1, the mass of one thousand grains and grain yield were assessed. The observed means were submitted to the analysis of variance (ANOVA) and Duncan's test (p ≤ 0.05). The results showed significant differences in disease severity, weight of a thousand grains, and yield. The treatments with the lowest severity and highest grain yield were T5 and T6 with two applications at V5 and 21 DAA, and R1 and 21 DAA, respectively. ELATUS® is recommended to be applied twice, one at V5 and the second application 21 days after the first one, or one at R1 and the other 21 days after it, which presented good efficiency in fungus control and an increase in grain yield
Starting Page	153
Ending Page	157
Page Count	5
File Format	PDF HTM / HTML
DOI	10.25110/arqvet.v19i3.2016.6088
Volume Number	19
Alternate Webpage(s)	http://revistas.unipar.br/index.php/veterinaria/article/download/6088/3406
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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