Determinación in situ de la edad y la hora de corte sobre la concentración de carbohidratos solubles en una mezcla forrajera.

Abstract

The objective was to determine in situ, the age and the cut-off time on the concentration of soluble carbohydrates in a forage mixture, which was carried out at the Tunshi Experimental Station - ESPOCH, located at kilometer 12, way to Licto, Riobamba canton. Thirty-two plots already established of 5x4m were used, the size of the Experimental Unit was 20 m². A Completely Random Block Design (DBCA) was applied in plots divided under a bi-factorial arrangement with four replications. The results revealed that, at 35 days of age, the highest percentage of basal coverage was obtained (79.57%,), percentage of aerial coverage and height of the forage mixture was registered at 45 days of age with 69.78% and 74.33 cm, while the best cutting hours were at 4:00 pm with 81.76; 68.21% and 71.13 cm. At 35 days of age, the highest concentration of soluble carbohydrates (ºBx), blue grass and alfalfa was obtained at 2:00 p.m. with values of, 12.65 and 13.75 ºBx, while in the perennial Ray grass a value of 11.03 ºBx was recorded at 12:00. Data was obtained in winter. The highest production of green forage was obtained at 35 days of age with a production of 11.95 t / FV / ha / cut, the best time to cut was at 10:00 am with a production of 14.33 t / ha / FV. It is concluded that at 35 days, at 14:00, the highest concentration of soluble carbohydrates was obtained in the forage mixture with a value of 13% (ºBx). It is recommended to replicate the study in meadows established with other forage mixtures adapted to cold or tropical climates.