Desarrollo fenológico y producción de biomasa de pasto king grass (pennisetum spp) usando tres niveles de fertilización orgánica y tres alturas de corte.

Abstract

The objective of this research was to calculate the biomass production and measure the different phenological parameters of Pennisetum spp (King Grass) applying three harvesting heights and three doses of organic fertilization in the Río Suma experimental farm belonging to the Laica Eloy Alfaro University of Manabí. The experimental design was completely randomized blocks with twelve treatments and three repetitions, which included harvesting heights of 0; 10 and 20 cm, as well as three fertilization doses of 9; 18 and 27 ml of biol. For the statistical analysis, the Infostat program and the Tukey p < 0.05 test were used to compare the means. The evaluated variables were plant height, leaf length, leaf width, number of leaves, stem diameter, number of stems, green matter production, dry matter percentage, and economic analysis. No statistical differences were found in the treatments, however, in factor A (harvesting height) the variables presented higher values in the harvest at 0 cm, while factor B (dose of biol) the control had a higher average in different variables. In the means it was observed that the percentage of dry matter was higher in T11 (harvest 10 cm and without fertilization) with 27,15%, while King Grass grass production was higher in T10 (harvest 0 cm and without fertilization) with 13703.71 kg/ha. The cost-benefit was higher in T10 (harvest 0 cm and without fertilization) with 0.59 dollars.