Abstract:
Corn is a cultivar widely used as an option for silage, mainly in feeding
ruminants. The experiment aimed to evaluate the structural and morphological
composition of the Orion maize hybrid, submitted to different types of
fertilization. The height of insertion of the first spike and the plant (cm), the
number and size of spikes per plant (cm), the stem diameter (cm), and the
production of ensiled green and dry matter (kg/ha). An experimental design in
randomized blocks (DBC) was used, with five fertilization treatments in 15 m²,
with six replications, totaling an area of 90 m². T1 - Control, T2 - NPK 5-25-15 chemical fertilization + two 20-0-20 coverage applications, T3 - NPK 4-14-8
chemical fertilization + two 20-0-20 coverage applications, T4 - organic fertilizer
NPK 02-20-00 of bone meal + two coverage applications of 20-20-10 with
chicken litter, and T5 - chemical+organic fertilization NPK 4-14-8 + two
applications of 20-20 coverage -10 with chicken bed. Data were collected in the
field 80 days after emergence, after the green matter was crushed and weighed,
it was taken to the laboratory in an oven at 105ºC for a period of 48 hours, for
determination of dry matter. For analysis of variance, means were compared by
Tukey's test (p<0.05). The type of fertilization influenced the results, with the T5
treatment of chemical+organic fertilization presenting the best response and the
best performance.
