Evaluación de la intensidad y duración del control de malezas en una plantación comercial de eucalipto (Eucaliptus globulus LABILL), de 0 a 1 año en la hacienda Santa María de Aglomerados Cotopaxi S.A., de la parroquia Mulaló, cantón Latacunga, provincia de Cotopaxi

Abstract

This research proposes to evaluate the intensity and duration of weed control in a commercial plantation of eucalyptus tres (Eucalyptus globulus Labill) from 0 to 5 months in Santa Maria hacienda at Mulaló parish in Latacunga, Cotopaxi province. It was applied a completely randomized block design with a factorial structure and 12 repetitions. Factors: five levels of duration and 4 levels of intensity. General linear mixed models were used. Statistical analyzes were performed by Infostat and RStudio software. The DAC average (collar diameter) for the intensity of weed control was observed during the greatest growth obtained 0% of intensity in all length of control and they were statistically similar. It was also recorded the DAC average during a month (duration) and the lower diameters were observed in two months control and an intensity of 33% and an intensity of 100% controlled in three months. The analysis of height variance throughout the study showed significant differences in the effect of the duration of the control, the highest growth was achieved when there was a control in 30 days (D1), and the lowest growth when there was 4 controls during 120 days (D4), and the highest growth in height, when an intensity of 0% of weed control was applied in the third and fifth measurement. It is conclude to do a single weed control to the plantation. It is recommended to continue with studies of critical periods of weed control in different species and ecosystems.

Keywords: Eucalyptus, weed control, plant growth, weeds, herbicide, glyphosate.