PRODUTIVIDADE DE MILHO (ZEA MAYS L.) PARA SILAGEM SUBMETIDO A DIFERENTES TIPOS DE ADUBAÇÕES

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.