(Instituto Federal de Educação, Ciência e Tecnologia Farroupilha, 2021) Vezzosi, Eduardo Filipin; Nora, Douglas Dalla; Nora, Douglas Dalla; Junior, José Maria Tupinamba da Silva; Santos, Railson Schreinert dos
The objective of this work was to evaluate the efficiency and number of
fungicide applications at different phenological stages on off-season corn
performance, with emphasis on yield. The experiment was conducted from
February 18, 2020 to August 4, 2020, in a commercial field, where plots 30
meters long by 28 meters wide were demarcated, each plot 30 meters long with
8 rows of planting, with spacing of 0.5 m, totaling 120 m2. Fungicide applications
were carried out at phenological stages V8; VT; R2; V8 + VT; VT + R2 and V8 + VT
+ R2. In the control treatment, no fungicide application was carried out. The
product used was the fungicide containing Fluxapiroxade and Piraclostrobin, at
a dose of 350 ml.ha-1
. After harvesting and weighing it can be verified that the
plots with a fungicide application in the vegetative stages V8 and VT were the
most productive and most profitable in relation to the control where no
application was made. Plots where two and three fungicide applications were
made did not obtain satisfactory production or profitability.
