REVISTA DE INVESTIGACIÓN CIENTÍFICA SIGLO XXI
T0, T1 y T2 respectivamente) superiores al
control. Así concluyendo que el uso de
sustratos permite una mayor producción de
biomasa en verde, porcentaje de materia
seca permitiendo a la vez altura de planta
superiores al control, además de obtener
mayor porcentaje de materia seca tratando
con stipa ichu como sustrato y los tiempos
de cosecha no influyen significativamente
en la producción de biomasa en verde.
Palabras clave: sustrato, forraje,
hidropónico, tiempo de cosecha.
Palabras clave: sustrato, forraje,
hidropónico, tiempo de cosecha.
Summary
The test was carried out on the grounds of
the National University of Huancavelica,
between the months of January and
February 2019, with the objective of
evaluating the substrates and harvest times
in the performance of the FVH of barley. For
this, 54 trays (25.5x35.5cm) were used,
distributed in three treatments; T0 (Control
treatment or without substrate), T1
(sawdust), T2 (Stipa ichu ground), 100ml of
0.5% urea was added to the trays with
substrate (55g of 2 to 3mm of particle) and
allowed to soak for 24 hours. The sowing
density was 2.5kg / m2. Irrigation was done
twice a day. It was harvested in three times
(15, 19, 23 days), thus cutting a quadrant of
10x10cm / tray.
The different harvest times did not show
significantly (P> 0.05) changes in the
biomass production (3.54, 3.51 and 3.69kg /
m2 for 15, 19 and 23 days respectively),
increasing significantly (P <0.05) the height
of plant (8.11, 9.47 and 9.92cm for 15, 19
and 23 days respectively) and decreasing
significantly evidenced (P <0.05) the
production of dry material (14.89, 12.94 and
11.35% for 15, 19 and 23 days respectively).
The use of substrates allows a greater
production of biomass in green (3.34, 3.66
and 3.74 kg / m2 with T0, T1 and T2
respectively), percentage of dry matter
(13.66, 11.79 and 13.73% with T0, T1 and
T2 respectively) allowing at the same time
plant height (8.50, 9.44 and 9.56cm with T0,
T1 and T2 respectively) higher than the
control. Thus, concluding that the use of
substrates allows a greater production of
biomass in green, percentage of dry matter
allowing at the same time higher plant height
than the control, in addition to obtaining a
higher percentage of dry matter treating with
stipa ichu as substrate and harvest times.
they do not significantly influence the green
biomass production.
1. Introducción
Un sustrato en hidroponía es todo material
sólido distinto del suelo, natural o de
síntesis, mineral u orgánico, que, colocado
en un contenedor, en forma pura o en
mezcla, permite el anclaje del sistema
radicular, desempeñando un papel de
soporte para la planta. El sustrato puede
intervenir activamente en el proceso de la
nutrición vegetal (Mikel, 2010). Las
funciones básicas los sustratos deben tener
la capacidad de: retener agua en forma
disponible para la planta, permitir la