Evaluación de promotores de crecimientos en ecotipos de los géneros Panicum (Megathyrsus maximus).

Abstract

The objective of this study was to evaluate different growth promoters in ecotypes of the Panicum genus in the canton of El Carmen. Plots of 2 x 3 m (6 m²) were established, applying 13 treatments with 4 replicates each. For data analysis, a Randomized Complete Block Design (RCBD) was used with an A x B factorial arrangement, where A represented the different types of promoters and B the doses applied plus an additional treatment as a control. Parameters evaluated included plant height, leaf length, stem diameter and green forage production at 30, 60 and 90 days of evaluation. The results showed that Nitragua was identified as the most efficient promoter, reaching average heights of 53.78 cm, 100.69 cm and 150.18 cm at 30, 60 and 90 days, respectively. In terms of stem diameter, Nitragua recorded an average of 26.89 mm at 90 days, while green forage production was the highest at 2.82 kg-m² in the same period. Furthermore, the dose of 1.5 l ha-¹ proved to be optimal for maximizing these parameters with no adverse effects observed. These results confirm the effectiveness of Nitragua in significantly improving the development and productivity of Panicum (Mombaza) grass. In conclusion, Nitragua tartrate, applied at a dose of 1.5 l ha-¹, is the most efficient growth promoter for Panicum (Mombaza) grass.