Determinación in situ, edad y hora de corte óptima sobre la concentración de carbohidratos solubles en, Arrhenatherum elatius (pasto avena).

Abstract

The objective of this research was to establish the age and optimal cutting time on the concentration of soluble carbohydrates in Oat Grass (Arrhenatherum elatius), using age (45 and 60 days), and cutting time (08H00, as study factors). 10H00, 12H00, 14H00, 16H00 -18H00 hours). The experimental units were distributed under a randomized complete block design, under a bifactorial arrangement with three repetitions. The highest concentration of soluble carbohydrates was reached at 60 days and 08h00 cut with 8.80ºbrix. The percentage of basal, aerial and plant height coverage were higher at 60 days with 59.13%, 70.76% and 43.94 cm, in their order, while the best cutting hours were 12h00 and 14h00, registering the 54.38%, baseline coverage; 64.29% aerial and 30.80 cm high. The highest production of green biomass t / FV / ha/ cut, was at 60 days, with 2.60 t / FV / ha / year, the best time at 6:00 p.m. with 2.48 t / FV / ha / year. On the other hand, the highest dry matter was at 60 days of age with 1.25 t / DM / ha / year, and the most propitious cutting time at 12h00, with 1.19 t / DM / ha / year. Protein reported its best performance at 45 days, evaluated at 08:00, with 16.95%, while the highest fiber content was at 60 days at 10:00, reaching the maximum value of 56.53%. The highest cost benefit was registered at 12h00, with 2.91, that is to say that for every dollar invested, a profitability of 1.91 cents is obtained, which is quite encouraging.