Controle de helmintosporiose em milho pipoca com a aplicação de fungicidas em diferentes épocas / Northern leaf blicht control in popcorn with the fungicide applied in different times
Henriques, Marcos Jardel; Oliveira Neto, Antonio Mendes de; Guerra, Naiara; Oliveira, Nádia Cristina de; Camacho, Lucas Rafael de Souza; Gonzatto Junior, Oilson Alberto.
Campo digit
; 9(2): 45-57, dez. 2014. graf, tab
Artículo
en Portugués
| VETINDEX | ID: biblio-1471764
The popcorn culture is extremely susceptible to foliar diseases that relate to plants, reduce photosynthetic area, considerably reducing production. Although there are fungicides registered for the control of these diseases, there are still questions to which fungicides and times which apply the product to greater efficiency in control. The objective of this study was to evaluate the performance of three fungicide (pyraclostrobin + epoxyconazol 0.75 L c.p. ha-1 , trifloxystrobin + protioconazol to 1.00 L c.p. ha-1 and carbendazim + tebuconazole + cresoxim methyl 0,5 L c.p. ha-1 and the check without fungicide) in the Exserohilum turcicum control. Fungicides were applied at four growth stages of popcorn V8, VT, R2 and V8 plus R2, totaling 16 treatments with six replications. The assay was performed in the agricultural season 2012/2013 on the campus of the Faculdade Integrado de Campo Mourão-PR. We used the design on track with split plots. In this assay were evaluated the area under the disease progress curve (AUDPC), and plant height, ear, number of rows of grain and grain number in row, yield per plant and expandability. There was a trend for lower AUDPC treatments with fungicides pyraclostrobin + epoxyconazol for all application times compared to the other treatments evaluated. However, the lowest AUDPC were observed with the application of fungicides pyraclostrobin + epoxyconazol and carbendazim + tebuconazole + cresoximmethyl applied at V8 plus R2.
Biblioteca responsable:
BR68.1
Ubicación: BR68.1
Texto completo
Documentos relacionados