![##common.pageHeaderLogo.altText##](https://revistas.up.ac.pa/public/journals/7/pageHeaderLogoImage_es_ES.png)
The genera Panicum varieties like Mombaca, Tobiatá and Colonial have been introduced to different regions of the country with success and failure because they do not have the information of their behavior at the national level and are guided by the countries where they have been introduced with features climate, soil and topography totally variant to our country. The work was performed at the Center for Agricultural Research and Teaching Tocumen (CEIAT), Faculty of Agricultural Sciences of the University of Panama. The aim of this work was to study three cultivars of Panicum maximum (Massai, Tanzania and Aruana). Planting was with gamic seed rate of 6.0 kg / ha of seeds gamic, at a distance of 0.50 cm between groove and continuous stream. The experimental design was a randomized complete block with four replications, The cut is made ??every 30 days. The plot size was 9.00 m2. Although the three species had its dry matter yield (P <0.05) acceptable behavior, emphasized Panicum maximum cv. Tanzania with 30.00 and 9.40 t / ha for dry rainy seasons (winter) and (summer), respectively, while Panicum maximum cv. Massai was superior (P <0.05) in crude protein content (11.30%). In the dry season there were no significant differences in the height of the cultivars were found, but in the rainy season Panicum maximum cv. Tanzania and Panicum maximum cv. Massai outperformed Panicum maximum cv. Aruana.